High level conclusions

Fuzzers reach 37.60% of cyclomatic complexity.

Fuzzers reach 30.76% of all functions.

Fuzzer sig_fuzz is blocked:

The runtime code coverage of sig_fuzz covers 25.0% of its statically reachable code. This means there is some place that blocks the fuzzer to continue exploring more code at run time.

Reachability and coverage overview

Functions statically reachable by fuzzers

479 / 1557

Cyclomatic complexity statically reachable by fuzzers

3513 / 9341

Runtime code coverage of functions

604 / 1557

Warning: The number of runtime covered functions are larger than the number of reachable functions. This means that Fuzz Introspector found there are more functions covered at runtime than what is considered reachable based on the static analysis. This is a limitation in the analysis as anything covered at runtime is by definition reachable by the fuzzers.
This is likely due to a limitation in the static analysis. In this case, the count of functions covered at runtime is the true value, which means this is what should be considered "achieved" by the fuzzer.

Use the project functions table below to query all functions that were not covered at runtime.

The following table shows data about each function in the project. The functions included in this table correspond to all functions that exist in the executables of the fuzzers. As such, there may be functions that are from third-party libraries.

For further technical details on the meaning of columns in the below table, please see the Glossary .

Func name	Functions filename	Args	Function call depth	Reached by Fuzzers	Runtime reached by Fuzzers	Combined reached by Fuzzers	Fuzzers runtime hit	Func lines hit %	I Count	BB Count	Cyclomatic complexity	Functions reached	Reached by functions	Accumulated cyclomatic complexity	Undiscovered complexity

Fuzzer: authopt_fuzz

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Call tree overview bitmap:

The distribution of callsites in terms of coloring is

Color	Runtime hitcount	Callsite count	Percentage
red	0	57	36.7%
gold	[1:9]	3	1.93%
yellow	[10:29]	0	0.0%
greenyellow	[30:49]	2	1.29%
lawngreen	50+	93	60.0%
All colors	155	100

Fuzz blockers

The followings are the branches where fuzzer fails to bypass.

Unique non-covered Complexity	Unique Reachable Complexities	Unique Reachable Functions	All non-covered Complexity	All Reachable Complexity	Function Name	Function Callsite	Blocked Branch
169	748	4 : View List ['a2tun', 'xstrdup', 'free', 'strchr']	169	748	a2tun	call site: 00084	/src/openssh/misc.c:561
2	2	1 : View List ['getpagesize']	8	8	recallocarray	call site: 00052	/src/openssh/openbsd-compat/recallocarray.c:64
2	2	1 : View List ['ntohs']	2	2	a2port	call site: 00077	/src/openssh/misc.c:549
0	11	1 : View List ['sshauthopt_free']	0	11	sshauthopt_merge	call site: 00149	/src/openssh/auth-options.c:635
0	0	None	12	100	sshauthopt_merge	call site: 00135	/src/openssh/auth-options.c:541
0	0	None	8	19	sshauthopt_merge	call site: 00146	/src/openssh/auth-options.c:614
0	0	None	6	669	sshauthopt_parse	call site: 00003	/src/openssh/auth-options.c:333
0	0	None	2	2	recallocarray	call site: 00054	/src/openssh/openbsd-compat/recallocarray.c:77
0	0	None	2	2	strtonum	call site: 00072	/src/openssh/openbsd-compat/strtonum.c:52
0	0	None	0	11	sshauthopt_parse	call site: 00004	/src/openssh/auth-options.c:335
0	0	None	0	11	sshauthopt_parse	call site: 00042	/src/openssh/auth-options.c:405
0	0	None	0	11	sshauthopt_parse	call site: 00045	/src/openssh/auth-options.c:417

Runtime coverage analysis

Covered functions

19

Functions that are reachable but not covered

42

Reachable functions

61

Percentage of reachable functions covered

31.15%

NB: The sum of covered functions and functions that are reachable but not covered need not be equal to Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation of our static analysis capabilities.

Function name	source code lines	source lines hit	percentage hit

Files reached

filename	functions hit
regress/misc/fuzz-harness/authopt_fuzz.cc	1
auth-options.c	7
misc.c	8
openbsd-compat/recallocarray.c	1
openbsd-compat/strtonum.c	1
xmalloc.c	2
fatal.c	1
log.c	2
match.c	2
openbsd-compat/strlcpy.c	1
openbsd-compat/vis.c	2
cleanup.c	1
openbsd-compat/freezero.c	1

Fuzzer: sig_fuzz

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Call tree overview bitmap:

The distribution of callsites in terms of coloring is

Color	Runtime hitcount	Callsite count	Percentage
red	0	140	72.1%
gold	[1:9]	8	4.12%
yellow	[10:29]	1	0.51%
greenyellow	[30:49]	1	0.51%
lawngreen	50+	44	22.6%
All colors	194	100

Fuzz blockers

The followings are the branches where fuzzer fails to bypass.

Unique non-covered Complexity	Unique Reachable Complexities	Unique Reachable Functions	All non-covered Complexity	All Reachable Complexity	Function Name	Function Callsite	Blocked Branch
884	884	2 : View List ['sshkey_free', 'cert_new']	884	884	sshkey_new	call site: 00010	/src/openssh/sshkey.c:703
439	439	1 : View List ['sshkey_free']	439	439	sshkey_generate	call site: 00007	/src/openssh/sshkey.c:1499
165	165	1 : View List ['_getentropy_fail']	169	230	_rs_stir	call site: 00000	/src/openssh/openbsd-compat/arc4random.c:116
165	165	2 : View List ['sshfatal', 'ERR_get_error']	165	165	_ssh_compat_getentropy	call site: 00000	/src/openssh/openbsd-compat/bsd-getentropy.c:45
158	158	5 : View List ['do_log', 'match_pattern_list', 'strrchr', 'strlcpy', 'getpid']	158	158	sshlogv	call site: 00030	/src/openssh/log.c:462
73	73	2 : View List ['ssh_err', 'abort']	73	73	generate_or_die(int,unsignedint)	call site: 00000	/src/openssh/regress/misc/fuzz-harness/sig_fuzz.cc:18
13	13	1 : View List ['ssh_rsa_hash_id_from_keyname']	23	674	ssh_rsa_verify	call site: 00000	/src/openssh/ssh-rsa.c:528
2	2	1 : View List ['_exit']	2	2	_rs_init	call site: 00000	/src/openssh/openbsd-compat/arc4random.c:102
2	2	1 : View List ['memset']	2	2	_rs_forkdetect	call site: 00000	/src/openssh/openbsd-compat/./arc4random.h:60
2	2	1 : View List ['munmap']	2	2	_rs_allocate	call site: 00000	/src/openssh/openbsd-compat/./arc4random.h:73
2	2	1 : View List ['BN_clear_free']	2	2	sshbuf_get_bignum2	call site: 00000	/src/openssh/sshbuf-getput-crypto.c:48
0	199	1 : View List ['sshbuf_free']	0	199	sshbuf_froms	call site: 00000	/src/openssh/sshbuf-getput-basic.c:561

Runtime coverage analysis

Covered functions

101

Functions that are reachable but not covered

63

Reachable functions

84

Percentage of reachable functions covered

25.0%

NB: The sum of covered functions and functions that are reachable but not covered need not be equal to Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation of our static analysis capabilities.

Warning: The number of covered functions are larger than the number of reachable functions. This means that there are more functions covered at runtime than are extracted using static analysis. This is likely a result of the static analysis component failing to extract the right call graph or the coverage runtime being compiled with sanitizers in code that the static analysis has not analysed. This can happen if lto/gold is not used in all places that coverage instrumentation is used.

Function name	source code lines	source lines hit	percentage hit

Files reached

filename	functions hit
regress/misc/fuzz-harness/sig_fuzz.cc	2
sshkey.c	19
sshbuf.c	9
misc.c	1
log.c	3
match.c	2
openbsd-compat/strlcpy.c	1
openbsd-compat/vis.c	2
openbsd-compat/freezero.c	1
ssh-pkcs11-client.c	3
fatal.c	1
cleanup.c	1
sshbuf-getput-basic.c	4
openbsd-compat/recallocarray.c	1
ssherr.c	1
sshbuf-misc.c	1
xmalloc.c	1

Fuzzer: privkey_fuzz

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Call tree overview bitmap:

The distribution of callsites in terms of coloring is

Color	Runtime hitcount	Callsite count	Percentage
red	0	104	40.4%
gold	[1:9]	0	0.0%
yellow	[10:29]	0	0.0%
greenyellow	[30:49]	4	1.55%
lawngreen	50+	149	57.9%
All colors	257	100

Fuzz blockers

The followings are the branches where fuzzer fails to bypass.

Unique non-covered Complexity	Unique Reachable Complexities	Unique Reachable Functions	All non-covered Complexity	All Reachable Complexity	Function Name	Function Callsite	Blocked Branch
418	418	1 : View List ['pkcs11_key_free']	418	879	sshkey_free_contents	call site: 00109	/src/openssh/sshkey.c:763
209	209	1 : View List ['ssh_digest_buffer']	209	607	webauthn_check_prepare_hash	call site: 00000	/src/openssh/ssh-ecdsa-sk.c:217
158	158	5 : View List ['do_log', 'match_pattern_list', 'strrchr', 'strlcpy', 'getpid']	158	158	sshlogv	call site: 00016	/src/openssh/log.c:462
13	13	1 : View List ['ssh_rsa_hash_id_from_keyname']	23	674	ssh_rsa_verify	call site: 00000	/src/openssh/ssh-rsa.c:528
2	2	1 : View List ['EVP_PKEY_get1_RSA']	30	1010	ssh_rsa_deserialize_private	call site: 00000	/src/openssh/ssh-rsa.c:243
2	2	1 : View List ['BN_clear_free']	2	2	sshbuf_get_bignum2	call site: 00000	/src/openssh/sshbuf-getput-crypto.c:48
2	2	1 : View List ['munmap']	2	2	sshkey_prekey_free	call site: 00187	/src/openssh/sshkey.c:751
0	717	1 : View List ['sshbuf_put_u8']	0	722	sshbuf_dtob64	call site: 00000	/src/openssh/sshbuf-misc.c:147
0	439	1 : View List ['sshkey_free']	0	439	sshkey_new	call site: 00097	/src/openssh/sshkey.c:704
0	439	1 : View List ['cert_free']	0	439	cert_new	call site: 00099	/src/openssh/sshkey.c:669
0	199	1 : View List ['sshbuf_free']	0	199	sshbuf_froms	call site: 00070	/src/openssh/sshbuf-getput-basic.c:561
0	199	1 : View List ['sshbuf_free']	0	199	sshbuf_fromb	call site: 00086	/src/openssh/sshbuf.c:153

Runtime coverage analysis

Covered functions

144

Functions that are reachable but not covered

48

Reachable functions

100

Percentage of reachable functions covered

52.0%

NB: The sum of covered functions and functions that are reachable but not covered need not be equal to Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation of our static analysis capabilities.

Warning: The number of covered functions are larger than the number of reachable functions. This means that there are more functions covered at runtime than are extracted using static analysis. This is likely a result of the static analysis component failing to extract the right call graph or the coverage runtime being compiled with sanitizers in code that the static analysis has not analysed. This can happen if lto/gold is not used in all places that coverage instrumentation is used.

Function name	source code lines	source lines hit	percentage hit

Files reached

filename	functions hit
regress/misc/fuzz-harness/privkey_fuzz.cc	1
sshbuf.c	14
sshkey.c	27
sshbuf-getput-basic.c	11
misc.c	1
log.c	3
match.c	2
openbsd-compat/strlcpy.c	1
openbsd-compat/vis.c	2
openbsd-compat/freezero.c	1
ssh-pkcs11-client.c	3
fatal.c	1
cleanup.c	1
openbsd-compat/recallocarray.c	1
ssherr.c	1
sshbuf-misc.c	1
xmalloc.c	1

Fuzzer: sshsig_fuzz

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Call tree overview bitmap:

The distribution of callsites in terms of coloring is

Color	Runtime hitcount	Callsite count	Percentage
red	0	122	33.0%
gold	[1:9]	3	0.81%
yellow	[10:29]	4	1.08%
greenyellow	[30:49]	4	1.08%
lawngreen	50+	236	63.9%
All colors	369	100

Fuzz blockers

The followings are the branches where fuzzer fails to bypass.

Unique non-covered Complexity	Unique Reachable Complexities	Unique Reachable Functions	All non-covered Complexity	All Reachable Complexity	Function Name	Function Callsite	Blocked Branch
418	418	1 : View List ['pkcs11_key_free']	418	879	sshkey_free_contents	call site: 00222	/src/openssh/sshkey.c:763
167	167	1 : View List ['xstrdup']	167	167	tohex	call site: 00125	/src/openssh/misc.c:1564
163	163	1 : View List ['sshfatal']	163	163	xcalloc	call site: 00137	/src/openssh/xmalloc.c:56
122	158	5 : View List ['do_log', 'match_pattern_list', 'strrchr', 'strlcpy', 'getpid']	122	158	sshlogv	call site: 00025	/src/openssh/log.c:462
49	49	5 : View List ['EC_KEY_get0_group', 'EC_KEY_get0_public_key', 'EVP_PKEY_new', 'EVP_PKEY_set1_EC_KEY', 'sshkey_ec_validate_public']	55	55	ssh_ecdsa_deserialize_public	call site: 00000	/src/openssh/ssh-ecdsa.c:251
13	13	1 : View List ['ssh_rsa_hash_id_from_keyname']	23	674	ssh_rsa_verify	call site: 00000	/src/openssh/ssh-rsa.c:528
6	6	3 : View List ['closelog', 'exit', 'openlog']	6	6	log_init	call site: 00008	/src/openssh/log.c:215
2	219	2 : View List ['sshbuf_get_string_direct', 'EC_KEY_set_public_key']	6	223	sshbuf_get_eckey	call site: 00000	/src/openssh/sshbuf-getput-crypto.c:110
2	2	1 : View List ['strlen']	2	2	strlcat	call site: 00140	/src/openssh/openbsd-compat/strlcat.c:48
2	2	1 : View List ['BN_clear_free']	2	2	sshbuf_get_bignum2	call site: 00000	/src/openssh/sshbuf-getput-crypto.c:48
2	2	1 : View List ['munmap']	2	2	sshkey_prekey_free	call site: 00278	/src/openssh/sshkey.c:751
0	439	1 : View List ['sshkey_free']	0	439	sshkey_new	call site: 00212	/src/openssh/sshkey.c:704

Runtime coverage analysis

Covered functions

142

Functions that are reachable but not covered

48

Reachable functions

122

Percentage of reachable functions covered

60.66%

NB: The sum of covered functions and functions that are reachable but not covered need not be equal to Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation of our static analysis capabilities.

Warning: The number of covered functions are larger than the number of reachable functions. This means that there are more functions covered at runtime than are extracted using static analysis. This is likely a result of the static analysis component failing to extract the right call graph or the coverage runtime being compiled with sanitizers in code that the static analysis has not analysed. This can happen if lto/gold is not used in all places that coverage instrumentation is used.

Function name	source code lines	source lines hit	percentage hit

Files reached

filename	functions hit
regress/misc/fuzz-harness/sshsig_fuzz.cc	1
sshbuf.c	14
log.c	5
sshsig.c	6
misc.c	2
match.c	2
openbsd-compat/strlcpy.c	1
openbsd-compat/vis.c	2
openbsd-compat/freezero.c	1
sshbuf-misc.c	2
openbsd-compat/timingsafe_bcmp.c	1
sshbuf-getput-basic.c	12
ssherr.c	1
digest-openssl.c	5
xmalloc.c	4
fatal.c	1
cleanup.c	1
openbsd-compat/strlcat.c	1
openbsd-compat/recallocarray.c	1
sshkey.c	25
ssh-pkcs11-client.c	3

Fuzzer: pubkey_fuzz

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Call tree overview bitmap:

The distribution of callsites in terms of coloring is

Color	Runtime hitcount	Callsite count	Percentage
red	0	103	42.3%
gold	[1:9]	4	1.64%
yellow	[10:29]	0	0.0%
greenyellow	[30:49]	2	0.82%
lawngreen	50+	134	55.1%
All colors	243	100

Fuzz blockers

The followings are the branches where fuzzer fails to bypass.

Unique non-covered Complexity	Unique Reachable Complexities	Unique Reachable Functions	All non-covered Complexity	All Reachable Complexity	Function Name	Function Callsite	Blocked Branch
418	418	1 : View List ['pkcs11_key_free']	418	879	sshkey_free_contents	call site: 00099	/src/openssh/sshkey.c:763
209	209	1 : View List ['ssh_digest_buffer']	209	607	webauthn_check_prepare_hash	call site: 00000	/src/openssh/ssh-ecdsa-sk.c:217
158	158	5 : View List ['do_log', 'match_pattern_list', 'strrchr', 'strlcpy', 'getpid']	158	158	sshlogv	call site: 00015	/src/openssh/log.c:462
13	13	1 : View List ['ssh_rsa_hash_id_from_keyname']	23	674	ssh_rsa_verify	call site: 00000	/src/openssh/ssh-rsa.c:528
2	2	1 : View List ['BN_clear_free']	2	2	sshbuf_get_bignum2	call site: 00000	/src/openssh/sshbuf-getput-crypto.c:48
2	2	1 : View List ['munmap']	2	2	sshkey_prekey_free	call site: 00177	/src/openssh/sshkey.c:751
0	717	1 : View List ['sshbuf_put_u8']	0	722	sshbuf_dtob64	call site: 00000	/src/openssh/sshbuf-misc.c:147
0	439	1 : View List ['sshkey_free']	0	439	sshkey_new	call site: 00087	/src/openssh/sshkey.c:704
0	439	1 : View List ['cert_free']	0	439	cert_new	call site: 00089	/src/openssh/sshkey.c:669
0	199	1 : View List ['sshbuf_free']	0	199	sshbuf_froms	call site: 00196	/src/openssh/sshbuf-getput-basic.c:561
0	199	1 : View List ['sshbuf_free']	0	199	sshbuf_fromb	call site: 00055	/src/openssh/sshbuf.c:153
0	0	None	42	5492	ssh_ecdsa_sk_verify	call site: 00000	/src/openssh/ssh-ecdsa-sk.c:255

Runtime coverage analysis

Covered functions

133

Functions that are reachable but not covered

48

Reachable functions

97

Percentage of reachable functions covered

50.52%

NB: The sum of covered functions and functions that are reachable but not covered need not be equal to Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation of our static analysis capabilities.

Warning: The number of covered functions are larger than the number of reachable functions. This means that there are more functions covered at runtime than are extracted using static analysis. This is likely a result of the static analysis component failing to extract the right call graph or the coverage runtime being compiled with sanitizers in code that the static analysis has not analysed. This can happen if lto/gold is not used in all places that coverage instrumentation is used.

Function name	source code lines	source lines hit	percentage hit

Files reached

filename	functions hit
regress/misc/fuzz-harness/pubkey_fuzz.cc	1
sshkey.c	24
sshbuf.c	14
misc.c	1
log.c	3
match.c	2
openbsd-compat/strlcpy.c	1
openbsd-compat/vis.c	2
openbsd-compat/freezero.c	1
sshbuf-getput-basic.c	11
ssh-pkcs11-client.c	3
fatal.c	1
cleanup.c	1
openbsd-compat/recallocarray.c	1
ssherr.c	1
sshbuf-misc.c	1
xmalloc.c	1

Fuzzer: sshsigopt_fuzz

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Call tree overview bitmap:

The distribution of callsites in terms of coloring is

Color	Runtime hitcount	Callsite count	Percentage
red	0	0	0.0%
gold	[1:9]	0	0.0%
yellow	[10:29]	0	0.0%
greenyellow	[30:49]	0	0.0%
lawngreen	50+	32	100.%
All colors	32	100

Fuzz blockers

The followings are the branches where fuzzer fails to bypass.

Unique non-covered Complexity	Unique Reachable Complexities	Unique Reachable Functions	All non-covered Complexity	All Reachable Complexity	Function Name	Function Callsite	Blocked Branch
0	0	None	2	2	opt_flag	call site: 00005	/src/openssh/misc.c:2623
0	0	None	0	3	sshsigopt_parse	call site: 00029	/src/openssh/sshsig.c:720
0	0	None	0	0	opt_dequote	call site: 00013	/src/openssh/misc.c:2647
0	0	None	0	0	sshsigopt_parse	call site: 00002	/src/openssh/sshsig.c:648

Runtime coverage analysis

Covered functions

7

Functions that are reachable but not covered

9

Reachable functions

16

Percentage of reachable functions covered

43.75%

NB: The sum of covered functions and functions that are reachable but not covered need not be equal to Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation of our static analysis capabilities.

Function name	source code lines	source lines hit	percentage hit

Files reached

filename	functions hit
regress/misc/fuzz-harness/sshsigopt_fuzz.cc	1
sshsig.c	2
misc.c	4

Fuzzer: agent_fuzz

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Call tree overview bitmap:

The distribution of callsites in terms of coloring is

Color	Runtime hitcount	Callsite count	Percentage
red	0	1156	65.7%
gold	[1:9]	74	4.20%
yellow	[10:29]	18	1.02%
greenyellow	[30:49]	55	3.12%
lawngreen	50+	456	25.9%
All colors	1759	100

Fuzz blockers

The followings are the branches where fuzzer fails to bypass.

Unique non-covered Complexity	Unique Reachable Complexities	Unique Reachable Functions	All non-covered Complexity	All Reachable Complexity	Function Name	Function Callsite	Blocked Branch
4147	5796	17 : View List ['notify_start', 'sshbuf_ptr', 'match_pattern_list', 'agent_decode_alg', 'buf_equal', 'identity_permitted', 'sshbuf_len', 'lookup_identity', 'parse_userauth_request', 'sshkey_fingerprint', 'check_websafe_message_contents', 'sshkey_sign', 'confirm_key', 'sshkey_equal', 'read_passphrase', 'sshkey_is_sk', 'sshkey_type']	4801	11543	process_sign_request2	call site: 00782	/src/openssh/regress/misc/fuzz-harness/../../../ssh-agent.c:859
2371	3925	20 : View List ['match_pattern_list', 'strerror', 'xcalloc', 'parse_key_constraints', 'monotime', 'sshkey_shield_private', 'sshkey_is_sk', 'strcasecmp', 'identity_permitted', 'dump_dest_constraints', 'sshkey_ssh_name', 'sshkey_fingerprint', 'lookup_identity', 'sshfatal', '__errno_location', 'sshkey_type', 'sshbuf_reset', 'socket_is_remote', 'xstrdup', 'realpath']	2371	7416	process_add_identity	call site: 01413	/src/openssh/regress/misc/fuzz-harness/../../../ssh-agent.c:1356
1565	3202	6 : View List ['sshfatal', 'sshlog', 'permitted_by_dest_constraints', 'free', 'sshkey_type', 'sshkey_fingerprint']	1565	3202	identity_permitted	call site: 00878	/src/openssh/regress/misc/fuzz-harness/../../../ssh-agent.c:488
788	788	1 : View List ['process_ext_session_bind']	788	1140	process_extension	call site: 01712	/src/openssh/regress/misc/fuzz-harness/../../../ssh-agent.c:1780
653	653	1 : View List ['sshkey_parse_private_pem_fileblob']	653	653	sshkey_parse_private_fileblob_type	call site: 00195	/src/openssh/sshkey.c:3637
418	418	1 : View List ['pkcs11_key_free']	418	879	sshkey_free_contents	call site: 00101	/src/openssh/sshkey.c:763
401	1421	4 : View List ['sshfatal', 'free_identity', 'identity_permitted', 'lookup_identity']	401	2371	process_remove_identity	call site: 01539	/src/openssh/regress/misc/fuzz-harness/../../../ssh-agent.c:1005
346	346	6 : View List ['kill', 'strerror', 'ssh_signal', 'sshfatal', 'waitpid', '__errno_location']	346	346	notify_complete	call site: 01355	/src/openssh/readpass.c:320
204	204	1 : View List ['cert_compare']	204	221	sshkey_equal	call site: 00497	/src/openssh/sshkey.c:829
165	165	1 : View List ['_getentropy_fail']	169	230	_rs_stir	call site: 00385	/src/openssh/openbsd-compat/arc4random.c:116
165	165	2 : View List ['sshfatal', 'ERR_get_error']	165	165	_ssh_compat_getentropy	call site: 00386	/src/openssh/openbsd-compat/bsd-getentropy.c:45
163	234	2 : View List ['sshfatal', 'ssh_err']	163	234	no_identities	call site: 00738	/src/openssh/regress/misc/fuzz-harness/../../../ssh-agent.c:1517

Runtime coverage analysis

Covered functions

247

Functions that are reachable but not covered

229

Reachable functions

397

Percentage of reachable functions covered

42.32%

NB: The sum of covered functions and functions that are reachable but not covered need not be equal to Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation of our static analysis capabilities.

Function name	source code lines	source lines hit	percentage hit

Files reached

filename	functions hit
regress/misc/fuzz-harness/agent_fuzz.cc	1
regress/misc/fuzz-harness/agent_fuzz_helper.c	9
log.c	6
match.c	2
openbsd-compat/strlcpy.c	1
openbsd-compat/vis.c	2
xmalloc.c	6
fatal.c	1
regress/misc/fuzz-harness/../../../ssh-agent.c	41
ssh-pkcs11-client.c	13
openbsd-compat/recallocarray.c	1
sshbuf.c	15
misc.c	6
openbsd-compat/freezero.c	1
sshkey.c	77
sshbuf-getput-basic.c	18
ssherr.c	1
sshbuf-misc.c	3
openbsd-compat/base64.c	2
cipher.c	8
openbsd-compat/bcrypt_pbkdf.c	2
hash.c	1
openbsd-compat/blowfish.c	6
openbsd-compat/arc4random.c	6
openbsd-compat/./arc4random.h	3
openbsd-compat/bsd-getentropy.c	1
openbsd-compat/./chacha_private.h	3
cipher-chachapoly-libcrypto.c	3
poly1305.c	1
openbsd-compat/timingsafe_bcmp.c	1
ssh-ecdsa.c	1
digest-openssl.c	4
openbsd-compat/strlcat.c	1
readpass.c	6
openbsd-compat/readpassphrase.c	1
openbsd-compat/bsd-closefrom.c	2
ssh-sk.c	8
atomicio.c	2

Fuzzer: kex_fuzz

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Call tree overview bitmap:

The distribution of callsites in terms of coloring is

Color	Runtime hitcount	Callsite count	Percentage
red	0	622	39.4%
gold	[1:9]	144	9.13%
yellow	[10:29]	3	0.19%
greenyellow	[30:49]	3	0.19%
lawngreen	50+	804	51.0%
All colors	1576	100

Fuzz blockers

The followings are the branches where fuzzer fails to bypass.

Unique non-covered Complexity	Unique Reachable Complexities	Unique Reachable Functions	All non-covered Complexity	All Reachable Complexity	Function Name	Function Callsite	Blocked Branch
1454	7416	13 : View List ['sshbuf_ptr', 'sshbuf_consume_end', 'sshbuf_get_u8', 'ssh_packet_write_wait', 'uncompress_buffer', 'ssh_packet_enable_delayed_compress', 'sshbuf_consume', 'ssh_packet_disconnect', 'ssh_packet_check_rekey', 'ssh_packet_log_type', 'sshpkt_disconnect', 'sshbuf_putb', 'sshbuf_reset']	1454	7893	ssh_packet_read_poll2	call site: 01496	/src/openssh/packet.c:1702
1200	1200	1 : View List ['ssh_packet_disconnect']	1454	7696	ssh_packet_read_poll2	call site: 01500	/src/openssh/packet.c:1723
1200	1200	1 : View List ['ssh_packet_disconnect']	1200	2308	ssh_packet_send2_wrapped	call site: 01033	/src/openssh/packet.c:1312
1200	1200	1 : View List ['ssh_packet_disconnect']	1200	1200	kex_choose_conf	call site: 01240	/src/openssh/kex.c:964
813	823	8 : View List ['dh_new_group', 'getline', 'rewind', 'free', 'arc4random_uniform', 'fclose', 'BN_clear_free', 'parse_prime']	813	1330	choose_dh	call site: 00000	/src/openssh/dh.c:167
794	794	4 : View List ['get_peer_ipaddr', 'get_peer_port', 'get_local_port', 'get_local_ipaddr']	794	794	ssh_remote_ipaddr	call site: 00712	/src/openssh/packet.c:532
653	653	1 : View List ['sshkey_parse_private_pem_fileblob']	653	653	sshkey_parse_private_fileblob_type	call site: 00060	/src/openssh/sshkey.c:3637
552	761	7 : View List ['ssh_packet_write_poll', '__errno_location', 'ms_to_timespec', 'monotime_tv', 'ssh_packet_have_data_to_write', 'ppoll', 'ms_subtract_diff']	552	761	ssh_packet_write_wait	call site: 01082	/src/openssh/packet.c:2153
502	502	1 : View List ['pkcs11_sign']	1438	1438	sshkey_sign	call site: 00000	/src/openssh/sshkey.c:2192
489	925	4 : View List ['sshfatal', 'free', 'sshlog', 'match_filter_denylist']	489	925	compat_kex_proposal	call site: 00787	/src/openssh/compat.c:146
445	884	2 : View List ['sshkey_free', 'cert_new']	445	884	sshkey_new	call site: 00168	/src/openssh/sshkey.c:703
439	439	1 : View List ['cert_free']	439	449	sshkey_free_contents	call site: 00237	/src/openssh/sshkey.c:768

Runtime coverage analysis

Covered functions

491

Functions that are reachable but not covered

187

Reachable functions

465

Percentage of reachable functions covered

59.78%

NB: The sum of covered functions and functions that are reachable but not covered need not be equal to Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation of our static analysis capabilities.

Warning: The number of covered functions are larger than the number of reachable functions. This means that there are more functions covered at runtime than are extracted using static analysis. This is likely a result of the static analysis component failing to extract the right call graph or the coverage runtime being compiled with sanitizers in code that the static analysis has not analysed. This can happen if lto/gold is not used in all places that coverage instrumentation is used.

Function name	source code lines	source lines hit	percentage hit

Files reached

filename	functions hit
regress/misc/fuzz-harness/kex_fuzz.cc	11
log.c	6
xmalloc.c	4
fatal.c	1
match.c	5
openbsd-compat/strlcpy.c	1
openbsd-compat/vis.c	2
cleanup.c	1
sshbuf.c	16
sshkey.c	51
misc.c	11
sshbuf-getput-basic.c	16
openbsd-compat/recallocarray.c	1
sshbuf-misc.c	3
openbsd-compat/base64.c	1
openbsd-compat/freezero.c	1
ssh-pkcs11-client.c	3
ssherr.c	1
cipher.c	13
openbsd-compat/bcrypt_pbkdf.c	2
hash.c	1
openbsd-compat/blowfish.c	6
openbsd-compat/arc4random.c	6
openbsd-compat/./arc4random.h	3
openbsd-compat/bsd-getentropy.c	1
openbsd-compat/./chacha_private.h	3
cipher-chachapoly-libcrypto.c	4
poly1305.c	1
openbsd-compat/timingsafe_bcmp.c	1
ssh-ecdsa.c	1
ssh_api.c	11
entropy.c	1
openbsd-compat/openssl-compat.c	2
packet.c	49
kex.c	22
mac.c	6
umac.c	26
./umac.c	26
hmac.c	6
digest-openssl.c	9
canohost.c	7
kex-names.c	7
openbsd-compat/strlcat.c	1
compat.c	2
dispatch.c	2

Optimal target analysis

Remaining optimal interesting functions

The following table shows a list of functions that are optimal targets. Optimal targets are identified by finding the functions that in combination, yield a high code coverage.

Func name	Functions filename	Arg count	Args	Function depth	hitcount	instr count	bb count	cyclomatic complexity	Reachable functions	Incoming references	total cyclomatic complexity	Unreached complexity
kex_gen_client	/src/openssh/kexgen.c	1	['N/A']	27	0	141	25	5	795	0	3110	1417
sshkey_check_revoked	/src/openssh/authfile.c	2	['N/A', 'N/A']	20	0	58	9	2	191	0	1452	624
xxxmain	/src/openssh/regress/misc/fuzz-harness/../../../ssh-agent.c	2	['int', 'N/A']	22	0	1254	220	52	405	0	2420	415
ssh_sk_sign	/src/openssh/regress/misc/sk-dummy/sk-dummy.c	10	['int', 'N/A', 'size_t', 'N/A', 'N/A', 'size_t', 'char', 'N/A', 'N/A', 'N/A']	7	0	175	21	7	63	0	199	164
kexgex_server	/src/openssh/kexgexs.c	1	['N/A']	28	0	17	3	2	382	0	2007	162
sshauthopt_from_cert	/src/openssh/auth-options.c	1	['N/A']	7	0	108	19	9	74	0	503	124
sshkey_save_private	/src/openssh/authfile.c	7	['N/A', 'N/A', 'N/A', 'N/A', 'int', 'N/A', 'int']	23	0	86	11	5	197	0	1160	115
ssh_krl_to_blob	/src/openssh/krl.c	2	['N/A', 'N/A']	17	0	412	78	30	78	0	486	94
kex_gen_server	/src/openssh/kexgen.c	1	['N/A']	27	0	17	3	2	718	0	2858	88
subprocess	/src/openssh/misc.c	9	['N/A', 'N/A', 'int', 'N/A', 'N/A', 'int', 'N/A', 'N/A', 'N/A']	8	0	708	108	31	69	0	327	85

Implementing fuzzers that target the above functions will improve reachability such that it becomes:

Functions statically reachable by fuzzers

1135 / 1557

Cyclomatic complexity statically reachable by fuzzers

6635 / 9341

All functions overview

If you implement fuzzers for these functions, the status of all functions in the project will be:

Func name	Functions filename	Args	Function call depth	Reached by Fuzzers	Runtime reached by Fuzzers	Combined reached by Fuzzers	Fuzzers runtime hit	Func lines hit %	I Count	BB Count	Cyclomatic complexity	Functions reached	Reached by functions	Accumulated cyclomatic complexity	Undiscovered complexity

This sections provides heuristics that can be used as input to a fuzz engine when running a given fuzz target. The current focus is on providing input that is usable by libFuzzer.

regress/misc/fuzz-harness/authopt_fuzz.cc

Dictionary

Use this with the libFuzzer -dict=DICT.file flag

Fuzzer function priority

Use one of these functions as input to libfuzzer with flag: -focus_function name

-focus_function=['sshauthopt_parse', 'recallocarray', 'sshauthopt_merge', 'a2port', 'dup_strings']

regress/misc/fuzz-harness/sig_fuzz.cc

Dictionary

Use this with the libFuzzer -dict=DICT.file flag

Fuzzer function priority

Use one of these functions as input to libfuzzer with flag: -focus_function name

-focus_function=['sshkey_ssh_name_from_type_nid', 'sshlog', 'sshbuf_ptr', 'sshkey_impl_from_key', 'sshkey_is_cert', 'sshbuf_free', 'sshbuf_len']

regress/misc/fuzz-harness/privkey_fuzz.cc

Dictionary

Use this with the libFuzzer -dict=DICT.file flag

Fuzzer function priority

Use one of these functions as input to libfuzzer with flag: -focus_function name

-focus_function=['sshkey_ssh_name_from_type_nid', 'sshlog', 'sshkey_impl_from_key', 'sshbuf_ptr', 'sshkey_free', 'recallocarray', 'sshbuf_allocate', 'sshbuf_set_parent', 'sshbuf_fromb', 'cert_new']

regress/misc/fuzz-harness/sshsig_fuzz.cc

Dictionary

Use this with the libFuzzer -dict=DICT.file flag

Fuzzer function priority

Use one of these functions as input to libfuzzer with flag: -focus_function name

-focus_function=['sshkey_ssh_name_from_type_nid', 'match_pattern_list', 'sshkey_impl_from_key', 'sshbuf_fromb', 'hash_buffer', 'log_init', 'sshlog', 'sshkey_free', 'sshsig_peek_hashalg', 'ssh_digest_memory']

regress/misc/fuzz-harness/pubkey_fuzz.cc

Dictionary

Use this with the libFuzzer -dict=DICT.file flag

Fuzzer function priority

Use one of these functions as input to libfuzzer with flag: -focus_function name

-focus_function=['sshkey_ssh_name_from_type_nid', 'sshlog', 'sshkey_impl_from_key', 'sshbuf_fromb', 'sshkey_free', 'recallocarray', 'sshbuf_allocate', 'sshbuf_set_parent', 'cert_new']

regress/misc/fuzz-harness/sshsigopt_fuzz.cc

Dictionary

Use this with the libFuzzer -dict=DICT.file flag

regress/misc/fuzz-harness/agent_fuzz.cc

Dictionary

Use this with the libFuzzer -dict=DICT.file flag

Fuzzer function priority

Use one of these functions as input to libfuzzer with flag: -focus_function name

-focus_function=['identity_permitted', 'process_add_smartcard_key', 'process_add_identity', 'sshkey_puts_opts_internal', 'sshkey_ssh_name', 'process_extension', 'sshkey_fingerprint', 'sshkey_parse_private2', 'sshbuf_put_string', 'cipher_init']

regress/misc/fuzz-harness/kex_fuzz.cc

Dictionary

Use this with the libFuzzer -dict=DICT.file flag

Fuzzer function priority

Use one of these functions as input to libfuzzer with flag: -focus_function name

-focus_function=['ssh_remote_ipaddr', 'crypto_hash_sha512', 'sshkey_parse_private2', 'ssh_packet_close_internal', 'cipher_init', 'private2_decrypt', 'ssh_err', 'sshkey_check_rsa_length', 'sshkey_from_blob_internal', 'sshkey_ec_validate_private']

This section shows analysis of runtime coverage data.

For futher technical details on how this section is generated, please see the Glossary .

Complex functions with low coverage

Func name	Function total lines	Lines covered at runtime	percentage covered	Reached by fuzzers
sshauthopt_merge	94	51	54.25%	['authopt_fuzz']
sshbuf_dtob64	33	18	54.54%	['pubkey_fuzz', 'privkey_fuzz']
log_init	61	8	13.11%	['agent_fuzz', 'kex_fuzz', 'sshsig_fuzz']
ssh_err	128	70	54.68%	['agent_fuzz', 'sig_fuzz', 'sshsig_fuzz', 'kex_fuzz', 'pubkey_fuzz', 'privkey_fuzz']
cipher_init	69	24	34.78%	['agent_fuzz', 'kex_fuzz']
cipher_crypt	44	6	13.63%	['agent_fuzz', 'kex_fuzz']
strnvis	37	19	51.35%	['agent_fuzz', 'sig_fuzz', 'sshsig_fuzz', 'kex_fuzz', 'authopt_fuzz', 'pubkey_fuzz', 'privkey_fuzz']
process_sign_request2	131	37	28.24%	['agent_fuzz']
identity_permitted	68	12	17.64%	['agent_fuzz']
process_add_identity	104	25	24.03%	['agent_fuzz']
process_add_smartcard_key	82	27	32.92%	['agent_fuzz']
process_remove_smartcard_key	35	14	40.0%	['agent_fuzz']
sshkey_fingerprint	38	17	44.73%	['agent_fuzz']
private2_decrypt	120	65	54.16%	['agent_fuzz', 'kex_fuzz']
choose_dh	65	11	16.92%	['kex_fuzz']
kex_send_kexinit	31	17	54.83%	['kex_fuzz']
ssh_packet_send2	54	20	37.03%	['kex_fuzz']
ssh_packet_write_wait	40	8	20.0%	['kex_fuzz']
sshkey_unshield_private	55	9	16.36%	['agent_fuzz', 'kex_fuzz']

This section shows which files and directories are considered in this report. The main reason for showing this is fuzz introspector may include more code in the reasoning than is desired. This section helps identify if too many files/directories are included, e.g. third party code, which may be irrelevant for the threat model. In the event too much is included, fuzz introspector supports a configuration file that can exclude data from the report. See the following link for more information on how to create a config file: link

Files in report

Source file	Reached by	Covered by
	[]	[]
/src/openssh/dispatch.c	['kex_fuzz']	['kex_fuzz']
/src/openssh/dh.c	[]	[]
/src/openssh/xmalloc.c	['authopt_fuzz', 'sig_fuzz', 'privkey_fuzz', 'sshsig_fuzz', 'pubkey_fuzz', 'agent_fuzz', 'kex_fuzz']	['sshsig_fuzz', 'agent_fuzz', 'kex_fuzz']
/src/openssh/hash.c	['agent_fuzz', 'kex_fuzz']	['agent_fuzz', 'kex_fuzz']
/src/openssh/openbsd-compat/arc4random_uniform.c	[]	[]
/src/openssh/regress/misc/fuzz-harness/pubkey_fuzz.cc	['pubkey_fuzz']	['pubkey_fuzz']
/src/openssh/openbsd-compat/bcrypt_pbkdf.c	['agent_fuzz', 'kex_fuzz']	['agent_fuzz']
/src/openssh/digest-openssl.c	['sshsig_fuzz', 'agent_fuzz', 'kex_fuzz']	['sshsig_fuzz', 'agent_fuzz', 'kex_fuzz']
/src/openssh/sshbuf-getput-crypto.c	[]	[]
/src/openssh/openbsd-compat/bsd-getentropy.c	['agent_fuzz', 'kex_fuzz']	['agent_fuzz', 'kex_fuzz']
/src/openssh/misc.c	['authopt_fuzz', 'sig_fuzz', 'privkey_fuzz', 'sshsig_fuzz', 'pubkey_fuzz', 'sshsigopt_fuzz', 'agent_fuzz', 'kex_fuzz']	['authopt_fuzz', 'sshsig_fuzz', 'sshsigopt_fuzz', 'agent_fuzz', 'kex_fuzz']
/src/openssh/openbsd-compat/bsd-getpeereid.c	[]	[]
/src/openssh/ssh_api.c	['kex_fuzz']	['kex_fuzz']
/src/openssh/regress/misc/fuzz-harness/agent_fuzz_helper.c	['agent_fuzz']	['agent_fuzz']
/src/openssh/./libcrux_mlkem768_sha3.h	[]	[]
/src/openssh/cipher.c	['agent_fuzz', 'kex_fuzz']	['agent_fuzz', 'kex_fuzz']
/src/openssh/kexgex.c	[]	[]
/src/openssh/cipher-chachapoly-libcrypto.c	['agent_fuzz', 'kex_fuzz']	[]
/src/openssh/kex-names.c	['kex_fuzz']	['kex_fuzz']
/src/openssh/ssh-ecdsa.c	['agent_fuzz', 'kex_fuzz']	['agent_fuzz', 'kex_fuzz']
/src/openssh/cleanup.c	['authopt_fuzz', 'sig_fuzz', 'privkey_fuzz', 'sshsig_fuzz', 'pubkey_fuzz', 'kex_fuzz']	[]
/src/openssh/sshsig.c	['sshsig_fuzz', 'sshsigopt_fuzz']	['sshsig_fuzz', 'sshsigopt_fuzz']
/src/openssh/kexc25519.c	[]	[]
/src/openssh/ed25519.c	[]	[]
/src/openssh/entropy.c	['kex_fuzz']	['kex_fuzz']
/src/openssh/openbsd-compat/strlcpy.c	['authopt_fuzz', 'sig_fuzz', 'privkey_fuzz', 'sshsig_fuzz', 'pubkey_fuzz', 'agent_fuzz', 'kex_fuzz']	['agent_fuzz', 'kex_fuzz']
/src/openssh/openbsd-compat/timingsafe_bcmp.c	['sshsig_fuzz', 'agent_fuzz', 'kex_fuzz']	['sshsig_fuzz', 'agent_fuzz', 'kex_fuzz']
/src/openssh/fatal.c	['authopt_fuzz', 'sig_fuzz', 'privkey_fuzz', 'sshsig_fuzz', 'pubkey_fuzz', 'agent_fuzz', 'kex_fuzz']	[]
/src/openssh/match.c	['authopt_fuzz', 'sig_fuzz', 'privkey_fuzz', 'sshsig_fuzz', 'pubkey_fuzz', 'agent_fuzz', 'kex_fuzz']	['sshsig_fuzz', 'kex_fuzz']
/src/openssh/kexgexs.c	[]	[]
/src/openssh/ssh-ed25519-sk.c	[]	[]
/src/openssh/openbsd-compat/bsd-misc.c	[]	[]
/src/openssh/platform-tracing.c	[]	[]
/src/openssh/regress/misc/fuzz-harness/privkey_fuzz.cc	['privkey_fuzz']	['privkey_fuzz']
/src/openssh/regress/misc/fuzz-harness/sshsig_fuzz.cc	['sshsig_fuzz']	['sshsig_fuzz']
/src/openssh/misc-agent.c	[]	[]
/src/openssh/openbsd-compat/./chacha_private.h	['agent_fuzz', 'kex_fuzz']	[]
/src/openssh/auth-options.c	['authopt_fuzz']	['authopt_fuzz']
/src/openssh/atomicio.c	['agent_fuzz']	[]
/src/openssh/openbsd-compat/strlcat.c	['sshsig_fuzz', 'agent_fuzz', 'kex_fuzz']	['sshsig_fuzz', 'agent_fuzz', 'kex_fuzz']
/src/openssh/umac.c	['kex_fuzz']	['kex_fuzz']
/src/openssh/regress/misc/sk-dummy/sk-dummy.c	[]	[]
/src/openssh/kex.c	['kex_fuzz']	['kex_fuzz']
/src/openssh/kexmlkem768x25519.c	[]	[]
/src/openssh/kexecdh.c	[]	[]
/src/openssh/ssh-ed25519.c	[]	[]
/src/openssh/krl.c	[]	[]
/usr/include/x86_64-linux-gnu/bits/uintn-identity.h	[]	[]
/src/openssh/platform-pledge.c	[]	[]
/src/openssh/openbsd-compat/./arc4random.h	['agent_fuzz', 'kex_fuzz']	[]
/src/openssh/compat.c	['kex_fuzz']	['kex_fuzz']
/src/openssh/bitmap.c	[]	[]
/src/openssh/sshkey.c	['sig_fuzz', 'privkey_fuzz', 'sshsig_fuzz', 'pubkey_fuzz', 'agent_fuzz', 'kex_fuzz']	['sig_fuzz', 'privkey_fuzz', 'sshsig_fuzz', 'pubkey_fuzz', 'agent_fuzz', 'kex_fuzz']
/src/openssh/openbsd-compat/arc4random.c	['agent_fuzz', 'kex_fuzz']	['agent_fuzz', 'kex_fuzz']
/src/openssh/hmac.c	['kex_fuzz']	['kex_fuzz']
/src/openssh/ssherr.c	['sig_fuzz', 'privkey_fuzz', 'sshsig_fuzz', 'pubkey_fuzz', 'agent_fuzz', 'kex_fuzz']	['sshsig_fuzz', 'agent_fuzz', 'kex_fuzz']
/src/openssh/ssh-ecdsa-sk.c	[]	[]
/src/openssh/ssh-rsa.c	[]	[]
/src/openssh/log.c	['authopt_fuzz', 'sig_fuzz', 'privkey_fuzz', 'sshsig_fuzz', 'pubkey_fuzz', 'agent_fuzz', 'kex_fuzz']	['sig_fuzz', 'privkey_fuzz', 'sshsig_fuzz', 'pubkey_fuzz', 'agent_fuzz', 'kex_fuzz']
/src/openssh/openbsd-compat/vis.c	['authopt_fuzz', 'sig_fuzz', 'privkey_fuzz', 'sshsig_fuzz', 'pubkey_fuzz', 'agent_fuzz', 'kex_fuzz']	['agent_fuzz', 'kex_fuzz']
/src/openssh/platform-misc.c	[]	[]
/src/openssh/openbsd-compat/libressl-api-compat.c	[]	[]
/src/openssh/readpass.c	['agent_fuzz']	['agent_fuzz']
/src/openssh/regress/misc/fuzz-harness/kex_fuzz.cc	['kex_fuzz']	['kex_fuzz']
/src/openssh/openbsd-compat/recallocarray.c	['authopt_fuzz', 'sig_fuzz', 'privkey_fuzz', 'sshsig_fuzz', 'pubkey_fuzz', 'agent_fuzz', 'kex_fuzz']	['authopt_fuzz', 'privkey_fuzz', 'sshsig_fuzz', 'pubkey_fuzz', 'agent_fuzz', 'kex_fuzz']
/src/openssh/openbsd-compat/port-net.c	[]	[]
/src/openssh/kexgexc.c	[]	[]
/src/openssh/smult_curve25519_ref.c	[]	[]
/src/openssh/canohost.c	['kex_fuzz']	[]
/src/openssh/openbsd-compat/bsd-closefrom.c	['agent_fuzz']	[]
/src/openssh/regress/misc/fuzz-harness/sshsigopt_fuzz.cc	['sshsigopt_fuzz']	['sshsigopt_fuzz']
/src/openssh/sshbuf-getput-basic.c	['sig_fuzz', 'privkey_fuzz', 'sshsig_fuzz', 'pubkey_fuzz', 'agent_fuzz', 'kex_fuzz']	['sig_fuzz', 'privkey_fuzz', 'sshsig_fuzz', 'pubkey_fuzz', 'agent_fuzz', 'kex_fuzz']
/src/openssh/ssh-pkcs11-client.c	['sig_fuzz', 'privkey_fuzz', 'sshsig_fuzz', 'pubkey_fuzz', 'agent_fuzz', 'kex_fuzz']	[]
/src/openssh/mac.c	['kex_fuzz']	['kex_fuzz']
/src/openssh/kexdh.c	[]	[]
/src/openssh/sshbuf-misc.c	['sig_fuzz', 'privkey_fuzz', 'sshsig_fuzz', 'pubkey_fuzz', 'agent_fuzz', 'kex_fuzz']	['privkey_fuzz', 'sshsig_fuzz', 'pubkey_fuzz', 'agent_fuzz', 'kex_fuzz']
/src/openssh/kexgen.c	[]	[]
/src/openssh/openbsd-compat/freezero.c	['authopt_fuzz', 'sig_fuzz', 'privkey_fuzz', 'sshsig_fuzz', 'pubkey_fuzz', 'agent_fuzz', 'kex_fuzz']	['authopt_fuzz', 'sig_fuzz', 'privkey_fuzz', 'sshsig_fuzz', 'pubkey_fuzz', 'agent_fuzz', 'kex_fuzz']
/src/openssh/utf8.c	[]	[]
/src/openssh/sshbuf.c	['sig_fuzz', 'privkey_fuzz', 'sshsig_fuzz', 'pubkey_fuzz', 'agent_fuzz', 'kex_fuzz']	['sig_fuzz', 'privkey_fuzz', 'sshsig_fuzz', 'pubkey_fuzz', 'agent_fuzz', 'kex_fuzz']
/src/openssh/openbsd-compat/readpassphrase.c	['agent_fuzz']	[]
/src/openssh/regress/misc/fuzz-harness/agent_fuzz.cc	['agent_fuzz']	['agent_fuzz']
/src/openssh/regress/misc/fuzz-harness/authopt_fuzz.cc	['authopt_fuzz']	['authopt_fuzz']
/src/openssh/sntrup761.c	[]	[]
/src/openssh/openbsd-compat/blowfish.c	['agent_fuzz', 'kex_fuzz']	['agent_fuzz']
/src/openssh/packet.c	['kex_fuzz']	['kex_fuzz']
/src/openssh/kexsntrup761x25519.c	[]	[]
/src/openssh/regress/misc/fuzz-harness/sig_fuzz.cc	['sig_fuzz']	['sig_fuzz']
/src/openssh/regress/misc/fuzz-harness/../../../ssh-agent.c	['agent_fuzz']	[]
/src/openssh/openbsd-compat/strtonum.c	['authopt_fuzz']	['authopt_fuzz']
/src/openssh/openbsd-compat/getopt_long.c	[]	[]
/src/openssh/addr.c	[]	[]
/src/openssh/sshbuf-io.c	[]	[]
/src/openssh/./umac.c	['kex_fuzz']	['kex_fuzz']
/src/openssh/openbsd-compat/openssl-compat.c	['kex_fuzz']	['kex_fuzz']
/src/openssh/authfile.c	[]	[]
/src/openssh/openbsd-compat/base64.c	['agent_fuzz', 'kex_fuzz']	['agent_fuzz', 'kex_fuzz']
/src/openssh/regress/misc/fuzz-harness/ssh-sk-null.cc	[]	[]
/src/openssh/poly1305.c	['agent_fuzz', 'kex_fuzz']	[]
/src/openssh/ssh-sk.c	['agent_fuzz']	[]
/src/openssh/addrmatch.c	[]	[]

Directories in report

Directory
/src/openssh/openbsd-compat/./
/usr/include/x86_64-linux-gnu/bits/
/src/openssh/./
/src/openssh/
/src/openssh/openbsd-compat/
/src/openssh/regress/misc/fuzz-harness/
/src/openssh/regress/misc/fuzz-harness/../../../
/src/openssh/regress/misc/sk-dummy/