High level conclusions

Fuzzer sig_fuzz is blocked:

The runtime code coverage of sig_fuzz covers 29.82% of its statically reachable code. This means there is some place that blocks the fuzzer to continue exploring more code at run time.

Fuzzers reach 36.19% of cyclomatic complexity.

Fuzzers reach 29.76% of all functions.

Reachability and coverage overview

Functions statically reachable by fuzzers

492 / 1653

Cyclomatic complexity statically reachable by fuzzers

3652 / 10089

Runtime code coverage of functions

640 / 1653

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]	1	0.64%
greenyellow	[30:49]	1	0.64%
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 ['xstrdup', 'strchr', 'a2tun', 'free']	169	748	a2tun	call site: 00084	/src/openssh/misc.c:557
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:545
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: 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	50	26.4%
gold	[1:9]	4	2.11%
yellow	[10:29]	0	0.0%
greenyellow	[30:49]	1	0.52%
lawngreen	50+	134	70.8%
All colors	189	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
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', 'strrchr', 'strlcpy', 'match_pattern_list', 'getpid']	158	158	sshlogv	call site: 00015	/src/openssh/log.c:462
13	13	1 : View List ['rsa_hash_id_from_keyname']	23	674	ssh_rsa_verify	call site: 00000	/src/openssh/ssh-rsa.c:504
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 ['explicit_bzero']	2	2	sshkey_xmss_free_state	call site: 00000	/src/openssh/sshkey-xmss.c:144
2	2	1 : View List ['munmap']	2	2	sshkey_prekey_free	call site: 00105	/src/openssh/sshkey.c:769
2	2	1 : View List ['SHA512']	2	2	core_hash_SHA2	call site: 00000	/src/openssh/xmss_hash.c:55
0	717	1 : View List ['sshbuf_put_u8']	0	722	sshbuf_dtob64	call site: 00000	/src/openssh/sshbuf-misc.c:147
0	225	1 : View List ['sshkey_free']	0	225	sshkey_new	call site: 00087	/src/openssh/sshkey.c:722
0	225	1 : View List ['cert_free']	0	225	cert_new	call site: 00089	/src/openssh/sshkey.c:687
0	199	1 : View List ['sshbuf_free']	0	199	sshbuf_froms	call site: 00141	/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

Runtime coverage analysis

Covered functions

168

Functions that are reachable but not covered

32

Reachable functions

79

Percentage of reachable functions covered

59.49%

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	19
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	9
openbsd-compat/recallocarray.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:2617
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:2641
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: 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	71	58.1%
gold	[1:9]	8	6.55%
yellow	[10:29]	1	0.81%
greenyellow	[30:49]	1	0.81%
lawngreen	50+	41	33.6%
All colors	122	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
462	462	2 : View List ['sshkey_free', 'cert_new']	462	462	sshkey_new	call site: 00010	/src/openssh/sshkey.c:721
225	225	1 : View List ['sshkey_free']	225	225	sshkey_generate	call site: 00007	/src/openssh/sshkey.c:1509
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 ['ERR_get_error', 'sshfatal']	165	165	_ssh_compat_getentropy	call site: 00000	/src/openssh/openbsd-compat/bsd-getentropy.c:45
158	158	5 : View List ['do_log', 'strrchr', 'strlcpy', 'match_pattern_list', '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 ['rsa_hash_id_from_keyname']	23	674	ssh_rsa_verify	call site: 00000	/src/openssh/ssh-rsa.c:504
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

40

Reachable functions

57

Percentage of reachable functions covered

29.82%

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	14
sshbuf.c	3
misc.c	1
log.c	3
match.c	2
openbsd-compat/strlcpy.c	1
openbsd-compat/vis.c	2
openbsd-compat/freezero.c	1
ssherr.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	51	25.1%
gold	[1:9]	0	0.0%
yellow	[10:29]	0	0.0%
greenyellow	[30:49]	2	0.98%
lawngreen	50+	150	73.8%
All colors	203	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
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', 'strrchr', 'strlcpy', 'match_pattern_list', 'getpid']	158	158	sshlogv	call site: 00016	/src/openssh/log.c:462
82	243	4 : View List ['malloc', 'sshlog', 'xmss_sign_open', 'sshkey_xmss_params']	82	452	ssh_xmss_verify	call site: 00000	/src/openssh/ssh-xmss.c:314
13	13	1 : View List ['rsa_hash_id_from_keyname']	23	674	ssh_rsa_verify	call site: 00000	/src/openssh/ssh-rsa.c:504
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: 00115	/src/openssh/sshkey.c:769
0	717	1 : View List ['sshbuf_put_u8']	0	722	sshbuf_dtob64	call site: 00000	/src/openssh/sshbuf-misc.c:147
0	225	1 : View List ['sshkey_free']	0	225	sshkey_new	call site: 00097	/src/openssh/sshkey.c:722
0	225	1 : View List ['cert_free']	0	225	cert_new	call site: 00099	/src/openssh/sshkey.c:687
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

163

Functions that are reachable but not covered

33

Reachable functions

83

Percentage of reachable functions covered

60.24%

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	22
sshbuf-getput-basic.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
openbsd-compat/recallocarray.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	77	23.8%
gold	[1:9]	4	1.23%
yellow	[10:29]	0	0.0%
greenyellow	[30:49]	9	2.78%
lawngreen	50+	233	72.1%
All colors	323	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
167	167	1 : View List ['xstrdup']	167	167	tohex	call site: 00125	/src/openssh/misc.c:1560
163	163	1 : View List ['sshfatal']	163	163	xcalloc	call site: 00137	/src/openssh/xmalloc.c:56
122	158	5 : View List ['do_log', 'strrchr', 'strlcpy', 'match_pattern_list', 'getpid']	122	158	sshlogv	call site: 00025	/src/openssh/log.c:462
82	243	4 : View List ['malloc', 'sshlog', 'xmss_sign_open', 'sshkey_xmss_params']	82	452	ssh_xmss_verify	call site: 00000	/src/openssh/ssh-xmss.c:314
49	49	5 : View List ['EC_KEY_get0_group', 'EVP_PKEY_new', 'sshkey_ec_validate_public', 'EC_KEY_get0_public_key', 'EVP_PKEY_set1_EC_KEY']	55	55	ssh_ecdsa_deserialize_public	call site: 00000	/src/openssh/ssh-ecdsa.c:251
13	13	1 : View List ['rsa_hash_id_from_keyname']	23	674	ssh_rsa_verify	call site: 00000	/src/openssh/ssh-rsa.c:504
6	6	3 : View List ['openlog', 'closelog', 'exit']	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: 00228	/src/openssh/sshkey.c:769
0	235	1 : View List ['sshkey_deserialize_sk']	0	235	ssh_ecdsa_sk_deserialize_public	call site: 00000	/src/openssh/ssh-ecdsa-sk.c:133

Runtime coverage analysis

Covered functions

156

Functions that are reachable but not covered

38

Reachable functions

111

Percentage of reachable functions covered

65.77%

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	1
openbsd-compat/timingsafe_bcmp.c	1
sshbuf-getput-basic.c	12
ssherr.c	1
digest-openssl.c	5
xmalloc.c	3
fatal.c	1
cleanup.c	1
openbsd-compat/strlcat.c	1
openbsd-compat/recallocarray.c	1
sshkey.c	21

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	1269	67.7%
gold	[1:9]	65	3.47%
yellow	[10:29]	65	3.47%
greenyellow	[30:49]	22	1.17%
lawngreen	50+	451	24.0%
All colors	1872	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
3672	5328	17 : View List ['buf_equal', 'parse_userauth_request', 'notify_start', 'identity_permitted', 'sshkey_sign', 'agent_decode_alg', 'confirm_key', 'sshkey_equal', 'match_pattern_list', 'check_websafe_message_contents', 'sshkey_type', 'sshbuf_ptr', 'read_passphrase', 'sshkey_fingerprint', 'sshkey_is_sk', 'lookup_identity', 'sshbuf_len']	4326	10559	process_sign_request2	call site: 00742	/src/openssh/regress/misc/fuzz-harness/../../../ssh-agent.c:860
2237	3796	20 : View List ['__errno_location', 'sshkey_ssh_name', 'realpath', 'xcalloc', 'sshfatal', 'strcasecmp', 'sshkey_type', 'xstrdup', 'monotime', 'strerror', 'parse_key_constraints', 'socket_is_remote', 'sshkey_fingerprint', 'sshbuf_reset', 'dump_dest_constraints', 'identity_permitted', 'sshkey_is_sk', 'lookup_identity', 'match_pattern_list', 'sshkey_shield_private']	2237	6398	process_add_identity	call site: 01325	/src/openssh/regress/misc/fuzz-harness/../../../ssh-agent.c:1377
1571	3210	6 : View List ['free', 'sshkey_type', 'sshlog', 'sshkey_fingerprint', 'sshfatal', 'permitted_by_dest_constraints']	1571	3210	identity_permitted	call site: 00849	/src/openssh/regress/misc/fuzz-harness/../../../ssh-agent.c:488
767	767	1 : View List ['process_ext_session_bind']	767	1112	process_extension	call site: 01824	/src/openssh/regress/misc/fuzz-harness/../../../ssh-agent.c:1801
451	451	1 : View List ['sshkey_parse_private_pem_fileblob']	451	451	sshkey_parse_private_fileblob_type	call site: 00465	/src/openssh/sshkey.c:3657
402	1198	4 : View List ['free_identity', 'lookup_identity', 'identity_permitted', 'sshfatal']	402	1927	process_remove_identity	call site: 01462	/src/openssh/regress/misc/fuzz-harness/../../../ssh-agent.c:1006
346	346	6 : View List ['ssh_signal', 'kill', '__errno_location', 'waitpid', 'strerror', 'sshfatal']	346	346	notify_complete	call site: 01264	/src/openssh/readpass.c:320
204	204	1 : View List ['cert_compare']	204	222	sshkey_equal	call site: 00452	/src/openssh/sshkey.c:845
165	165	1 : View List ['_getentropy_fail']	169	230	_rs_stir	call site: 00340	/src/openssh/openbsd-compat/arc4random.c:116
165	165	2 : View List ['ERR_get_error', 'sshfatal']	165	165	_ssh_compat_getentropy	call site: 00341	/src/openssh/openbsd-compat/bsd-getentropy.c:45
163	234	2 : View List ['ssh_err', 'sshfatal']	163	234	no_identities	call site: 00697	/src/openssh/regress/misc/fuzz-harness/../../../ssh-agent.c:1538
163	234	2 : View List ['ssh_err', 'sshfatal']	163	234	send_status	call site: 00710	/src/openssh/regress/misc/fuzz-harness/../../../ssh-agent.c:615

Runtime coverage analysis

Covered functions

246

Functions that are reachable but not covered

282

Reachable functions

449

Percentage of reachable functions covered

37.19%

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	10
log.c	5
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.c	30
sshkey.c	75
sshbuf.c	14
misc.c	6
openbsd-compat/freezero.c	1
sshbuf-getput-basic.c	18
openbsd-compat/recallocarray.c	1
sshbuf-misc.c	2
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
ssherr.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
sshkey-xmss.c	1

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	587	38.2%
gold	[1:9]	144	9.38%
yellow	[10:29]	3	0.19%
greenyellow	[30:49]	1	0.06%
lawngreen	50+	799	52.0%
All colors	1534	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
1388	7152	13 : View List ['ssh_packet_check_rekey', 'sshbuf_putb', 'uncompress_buffer', 'ssh_packet_write_wait', 'ssh_packet_enable_delayed_compress', 'sshbuf_reset', 'sshpkt_disconnect', 'ssh_packet_log_type', 'sshbuf_get_u8', 'sshbuf_ptr', 'sshbuf_consume', 'sshbuf_consume_end', 'ssh_packet_disconnect']	1388	7629	ssh_packet_read_poll2	call site: 01454	/src/openssh/packet.c:1691
1134	1134	1 : View List ['ssh_packet_disconnect']	1388	7432	ssh_packet_read_poll2	call site: 01458	/src/openssh/packet.c:1712
1134	1134	1 : View List ['ssh_packet_disconnect']	1134	2242	ssh_packet_send2_wrapped	call site: 00991	/src/openssh/packet.c:1301
1134	1134	1 : View List ['ssh_packet_disconnect']	1134	1134	kex_choose_conf	call site: 01198	/src/openssh/kex.c:964
794	794	4 : View List ['get_peer_ipaddr', 'get_peer_port', 'get_local_ipaddr', 'get_local_port']	794	794	ssh_remote_ipaddr	call site: 00668	/src/openssh/packet.c:521
759	769	8 : View List ['parse_prime', 'arc4random_uniform', 'dh_new_group', 'getline', 'BN_clear_free', 'rewind', 'fclose', 'free']	759	1276	choose_dh	call site: 00000	/src/openssh/dh.c:167
552	761	7 : View List ['ms_subtract_diff', 'ppoll', 'ms_to_timespec', 'ssh_packet_have_data_to_write', '__errno_location', 'monotime_tv', 'ssh_packet_write_poll']	552	761	ssh_packet_write_wait	call site: 01040	/src/openssh/packet.c:2142
489	925	4 : View List ['sshfatal', 'sshlog', 'match_filter_denylist', 'free']	489	925	compat_kex_proposal	call site: 00742	/src/openssh/compat.c:146
451	451	1 : View List ['sshkey_parse_private_pem_fileblob']	451	451	sshkey_parse_private_fileblob_type	call site: 00428	/src/openssh/sshkey.c:3657
286	512	3 : View List ['bcrypt_pbkdf', 'sshbuf_get_string', 'strlen']	290	3071	private2_decrypt	call site: 00260	/src/openssh/sshkey.c:3103
285	285	1 : View List ['ssh_packet_read_poll2_mux']	285	285	ssh_packet_read_poll2	call site: 01394	/src/openssh/packet.c:1569
254	937	3 : View List ['sshbuf_putb', 'uncompress_buffer', 'sshbuf_reset']	254	4177	ssh_packet_read_poll2	call site: 01465	/src/openssh/packet.c:1743

Runtime coverage analysis

Covered functions

488

Functions that are reachable but not covered

183

Reachable functions

458

Percentage of reachable functions covered

60.04%

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	48
misc.c	11
sshbuf-getput-basic.c	16
openbsd-compat/recallocarray.c	1
sshbuf-misc.c	2
openbsd-compat/base64.c	1
openbsd-compat/freezero.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
ssherr.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	785	0	3052	1413
sshkey_check_revoked	/src/openssh/authfile.c	2	['N/A', 'N/A']	20	0	58	9	2	181	0	1410	637
xxxmain	/src/openssh/regress/misc/fuzz-harness/../../../ssh-agent.c	2	['int', 'N/A']	22	0	1254	220	52	465	0	2644	417
ssh_xmss_sign	/src/openssh/ssh-xmss.c	9	['N/A', 'N/A', 'N/A', 'N/A', 'size_t', 'N/A', 'N/A', 'N/A', 'int']	15	0	375	67	27	140	0	828	335
kexgex_server	/src/openssh/kexgexs.c	1	['N/A']	28	0	17	3	2	376	0	1973	164
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	162
sshauthopt_from_cert	/src/openssh/auth-options.c	1	['N/A']	7	0	108	19	9	74	0	503	124

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

Functions statically reachable by fuzzers

1154 / 1653

Cyclomatic complexity statically reachable by fuzzers

6762 / 10089

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/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=['sshlog', 'sshbuf_fromb', 'recallocarray', 'sshbuf_set_parent', 'cert_new', 'sshkey_free_contents', 'sshkey_free', 'sshbuf_froms']

regress/misc/fuzz-harness/sshsigopt_fuzz.cc

Dictionary

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

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=['sshlog', 'sshbuf_free', 'sshkey_is_cert']

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=['sshlog', 'sshbuf_ptr', 'recallocarray', 'sshbuf_set_parent', 'sshbuf_fromb', 'cert_new', 'sshkey_free_contents', 'sshkey_free', 'sshkey_private_deserialize']

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=['match_pattern_list', 'sshbuf_fromb', 'hash_buffer', 'log_init', 'sshlog', 'sshsig_peek_hashalg', 'ssh_digest_memory', 'tohex', 'recallocarray', 'sshbuf_allocate']

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_ssh_name', 'process_extension', 'sshkey_fingerprint', 'sshkey_parse_private_fileblob_type', 'cipher_init', 'private2_decrypt', 'fingerprint_b64']

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_private_fileblob_type', 'ssh_packet_close_internal', 'cipher_init', 'private2_decrypt', 'sshkey_check_rsa_length', 'sshbuf_putb', 'ssh_packet_write_poll', '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%	['privkey_fuzz', 'pubkey_fuzz']
log_init	61	8	13.11%	['kex_fuzz', 'sshsig_fuzz', 'agent_fuzz']
ssh_err	128	70	54.68%	['kex_fuzz', 'agent_fuzz', 'sshsig_fuzz', 'sig_fuzz']
cipher_init	69	24	34.78%	['kex_fuzz', 'agent_fuzz']
cipher_crypt	44	6	13.63%	['kex_fuzz', 'agent_fuzz']
strnvis	37	19	51.35%	['sig_fuzz', 'agent_fuzz', 'authopt_fuzz', 'privkey_fuzz', 'kex_fuzz', 'sshsig_fuzz', 'pubkey_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%	['kex_fuzz', 'agent_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%	['kex_fuzz', 'agent_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/mac.c	['kex_fuzz']	['kex_fuzz']
/src/openssh/kexc25519.c	[]	[]
/src/openssh/regress/misc/fuzz-harness/agent_fuzz.cc	['agent_fuzz']	['agent_fuzz']
/src/openssh/openbsd-compat/strlcpy.c	['authopt_fuzz', 'pubkey_fuzz', 'sig_fuzz', 'privkey_fuzz', 'sshsig_fuzz', 'agent_fuzz', 'kex_fuzz']	['agent_fuzz', 'kex_fuzz']
/src/openssh/utf8.c	[]	[]
/src/openssh/regress/misc/fuzz-harness/sshsig_fuzz.cc	['sshsig_fuzz']	['sshsig_fuzz']
/src/openssh/atomicio.c	[]	[]
/src/openssh/xmalloc.c	['authopt_fuzz', 'sshsig_fuzz', 'agent_fuzz', 'kex_fuzz']	['sshsig_fuzz', 'agent_fuzz', 'kex_fuzz']
/src/openssh/addrmatch.c	[]	[]
/src/openssh/readpass.c	['agent_fuzz']	['agent_fuzz']
/src/openssh/ssh-pkcs11.c	['agent_fuzz']	[]
/src/openssh/dh.c	[]	[]
/src/openssh/xmss_hash.c	[]	[]
/src/openssh/kexgex.c	[]	[]
/src/openssh/platform-pledge.c	[]	[]
/src/openssh/auth-options.c	['authopt_fuzz']	['authopt_fuzz']
/src/openssh/sshbuf-getput-crypto.c	[]	[]
/src/openssh/xmss_fast.c	[]	[]
/src/openssh/cleanup.c	['authopt_fuzz', 'sshsig_fuzz', 'kex_fuzz']	[]
/src/openssh/sshbuf-getput-basic.c	['pubkey_fuzz', 'privkey_fuzz', 'sshsig_fuzz', 'agent_fuzz', 'kex_fuzz']	['pubkey_fuzz', 'privkey_fuzz', 'sshsig_fuzz', 'agent_fuzz', 'kex_fuzz']
/src/openssh/openbsd-compat/libressl-api-compat.c	[]	[]
/src/openssh/openbsd-compat/vis.c	['authopt_fuzz', 'pubkey_fuzz', 'sig_fuzz', 'privkey_fuzz', 'sshsig_fuzz', 'agent_fuzz', 'kex_fuzz']	['agent_fuzz', 'kex_fuzz']
/src/openssh/poly1305.c	['agent_fuzz', 'kex_fuzz']	[]
/src/openssh/kexgen.c	[]	[]
/src/openssh/regress/misc/fuzz-harness/agent_fuzz_helper.c	['agent_fuzz']	['agent_fuzz']
/src/openssh/openbsd-compat/bsd-getpeereid.c	[]	[]
/src/openssh/addr.c	[]	[]
/src/openssh/ssherr.c	['sig_fuzz', 'sshsig_fuzz', 'agent_fuzz', 'kex_fuzz']	['sshsig_fuzz', 'agent_fuzz', 'kex_fuzz']
/src/openssh/./libcrux_mlkem768_sha3.h	[]	[]
/src/openssh/regress/misc/fuzz-harness/kex_fuzz.cc	['kex_fuzz']	['kex_fuzz']
/src/openssh/ssh-ed25519-sk.c	[]	[]
/src/openssh/ssh-xmss.c	[]	[]
/src/openssh/kex-names.c	['kex_fuzz']	['kex_fuzz']
/src/openssh/kexdh.c	[]	[]
/src/openssh/kexecdh.c	[]	[]
/src/openssh/openbsd-compat/./arc4random.h	['agent_fuzz', 'kex_fuzz']	[]
/src/openssh/misc.c	['authopt_fuzz', 'pubkey_fuzz', 'sshsigopt_fuzz', 'sig_fuzz', 'privkey_fuzz', 'sshsig_fuzz', 'agent_fuzz', 'kex_fuzz']	['authopt_fuzz', 'sshsigopt_fuzz', 'sshsig_fuzz', 'agent_fuzz', 'kex_fuzz']
/src/openssh/regress/misc/fuzz-harness/privkey_fuzz.cc	['privkey_fuzz']	['privkey_fuzz']
/src/openssh/openbsd-compat/arc4random_uniform.c	[]	[]
/src/openssh/openbsd-compat/bsd-getentropy.c	['agent_fuzz', 'kex_fuzz']	['agent_fuzz', 'kex_fuzz']
/src/openssh/kex.c	['kex_fuzz']	['kex_fuzz']
/src/openssh/cipher-chachapoly-libcrypto.c	['agent_fuzz', 'kex_fuzz']	[]
/src/openssh/sshbuf.c	['pubkey_fuzz', 'sig_fuzz', 'privkey_fuzz', 'sshsig_fuzz', 'agent_fuzz', 'kex_fuzz']	['pubkey_fuzz', 'sig_fuzz', 'privkey_fuzz', 'sshsig_fuzz', 'agent_fuzz', 'kex_fuzz']
/src/openssh/openbsd-compat/strlcat.c	['sshsig_fuzz', 'agent_fuzz', 'kex_fuzz']	['sshsig_fuzz', 'agent_fuzz', 'kex_fuzz']
/src/openssh/regress/misc/sk-dummy/sk-dummy.c	[]	[]
/src/openssh/ssh-rsa.c	[]	[]
/src/openssh/openbsd-compat/bcrypt_pbkdf.c	['agent_fuzz', 'kex_fuzz']	['agent_fuzz']
/src/openssh/ssh-ecdsa-sk.c	[]	[]
/src/openssh/regress/misc/fuzz-harness/authopt_fuzz.cc	['authopt_fuzz']	['authopt_fuzz']
/src/openssh/ssh-sk.c	['agent_fuzz']	[]
/src/openssh/authfile.c	[]	[]
/src/openssh/openbsd-compat/arc4random.c	['agent_fuzz', 'kex_fuzz']	['agent_fuzz', 'kex_fuzz']
/src/openssh/openbsd-compat/blowfish.c	['agent_fuzz', 'kex_fuzz']	['agent_fuzz']
/src/openssh/bitmap.c	[]	[]
/src/openssh/compat.c	['kex_fuzz']	['kex_fuzz']
/src/openssh/regress/misc/fuzz-harness/sshsigopt_fuzz.cc	['sshsigopt_fuzz']	['sshsigopt_fuzz']
/src/openssh/xmss_wots.c	[]	[]
/src/openssh/fatal.c	['authopt_fuzz', 'sshsig_fuzz', 'agent_fuzz', 'kex_fuzz']	[]
/src/openssh/platform-tracing.c	[]	[]
/src/openssh/canohost.c	['kex_fuzz']	[]
/src/openssh/hash.c	['agent_fuzz', 'kex_fuzz']	['agent_fuzz', 'kex_fuzz']
/src/openssh/./umac.c	['kex_fuzz']	['kex_fuzz']
/src/openssh/misc-agent.c	[]	[]
/src/openssh/openbsd-compat/getopt_long.c	[]	[]
/src/openssh/sshkey.c	['pubkey_fuzz', 'sig_fuzz', 'privkey_fuzz', 'sshsig_fuzz', 'agent_fuzz', 'kex_fuzz']	['pubkey_fuzz', 'sig_fuzz', 'privkey_fuzz', 'sshsig_fuzz', 'agent_fuzz', 'kex_fuzz']
/src/openssh/hmac.c	['kex_fuzz']	['kex_fuzz']
/src/openssh/entropy.c	['kex_fuzz']	['kex_fuzz']
/src/openssh/sshbuf-io.c	[]	[]
/src/openssh/openbsd-compat/timingsafe_bcmp.c	['sshsig_fuzz', 'agent_fuzz', 'kex_fuzz']	['sshsig_fuzz', 'agent_fuzz', 'kex_fuzz']
/src/openssh/sshbuf-misc.c	['sshsig_fuzz', 'agent_fuzz', 'kex_fuzz']	['sshsig_fuzz', 'agent_fuzz', 'kex_fuzz']
/src/openssh/packet.c	['kex_fuzz']	['kex_fuzz']
/src/openssh/regress/misc/fuzz-harness/sig_fuzz.cc	['sig_fuzz']	['sig_fuzz']
/src/openssh/regress/misc/fuzz-harness/ssh-sk-null.cc	[]	[]
/src/openssh/ed25519.c	[]	[]
/src/openssh/openbsd-compat/bsd-closefrom.c	['agent_fuzz']	[]
/src/openssh/cipher.c	['agent_fuzz', 'kex_fuzz']	['agent_fuzz', 'kex_fuzz']
/src/openssh/regress/misc/fuzz-harness/../../../ssh-agent.c	['agent_fuzz']	[]
/src/openssh/openbsd-compat/bsd-misc.c	[]	[]
/src/openssh/openbsd-compat/base64.c	['agent_fuzz', 'kex_fuzz']	['agent_fuzz', 'kex_fuzz']
/src/openssh/openbsd-compat/port-net.c	[]	[]
/src/openssh/dispatch.c	['kex_fuzz']	['kex_fuzz']
/src/openssh/xmss_commons.c	[]	[]
/src/openssh/openbsd-compat/readpassphrase.c	['agent_fuzz']	[]
/src/openssh/krl.c	[]	[]
/src/openssh/kexmlkem768x25519.c	[]	[]
/src/openssh/openbsd-compat/freezero.c	['authopt_fuzz', 'pubkey_fuzz', 'sig_fuzz', 'privkey_fuzz', 'sshsig_fuzz', 'agent_fuzz', 'kex_fuzz']	['authopt_fuzz', 'pubkey_fuzz', 'sig_fuzz', 'privkey_fuzz', 'sshsig_fuzz', 'agent_fuzz', 'kex_fuzz']
/usr/include/x86_64-linux-gnu/bits/uintn-identity.h	[]	[]
/src/openssh/openbsd-compat/./chacha_private.h	['agent_fuzz', 'kex_fuzz']	[]
/src/openssh/log.c	['authopt_fuzz', 'pubkey_fuzz', 'sig_fuzz', 'privkey_fuzz', 'sshsig_fuzz', 'agent_fuzz', 'kex_fuzz']	['pubkey_fuzz', 'sig_fuzz', 'privkey_fuzz', 'sshsig_fuzz', 'agent_fuzz', 'kex_fuzz']
/src/openssh/openbsd-compat/strtonum.c	['authopt_fuzz']	['authopt_fuzz']
/src/openssh/kexsntrup761x25519.c	[]	[]
/src/openssh/match.c	['authopt_fuzz', 'pubkey_fuzz', 'sig_fuzz', 'privkey_fuzz', 'sshsig_fuzz', 'agent_fuzz', 'kex_fuzz']	['sshsig_fuzz', 'kex_fuzz']
/src/openssh/kexgexs.c	[]	[]
/src/openssh/ssh_api.c	['kex_fuzz']	['kex_fuzz']
/src/openssh/kexgexc.c	[]	[]
/src/openssh/sshsig.c	['sshsigopt_fuzz', 'sshsig_fuzz']	['sshsigopt_fuzz', 'sshsig_fuzz']
/src/openssh/ssh-ed25519.c	[]	[]
/src/openssh/regress/misc/fuzz-harness/pubkey_fuzz.cc	['pubkey_fuzz']	['pubkey_fuzz']
/src/openssh/sntrup761.c	[]	[]
/src/openssh/smult_curve25519_ref.c	[]	[]
/src/openssh/xmss_hash_address.c	[]	[]
/src/openssh/openbsd-compat/openssl-compat.c	['kex_fuzz']	['kex_fuzz']
/src/openssh/sshkey-xmss.c	['agent_fuzz']	[]
/src/openssh/ssh-ecdsa.c	['agent_fuzz', 'kex_fuzz']	['agent_fuzz', 'kex_fuzz']
/src/openssh/openbsd-compat/recallocarray.c	['authopt_fuzz', 'pubkey_fuzz', 'privkey_fuzz', 'sshsig_fuzz', 'agent_fuzz', 'kex_fuzz']	['authopt_fuzz', 'pubkey_fuzz', 'privkey_fuzz', 'sshsig_fuzz', 'agent_fuzz', 'kex_fuzz']
/src/openssh/platform-misc.c	[]	[]
/src/openssh/umac.c	['kex_fuzz']	['kex_fuzz']
/src/openssh/digest-openssl.c	['sshsig_fuzz', 'agent_fuzz', 'kex_fuzz']	['sshsig_fuzz', 'agent_fuzz', 'kex_fuzz']

Directories in report

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