Fuzz introspector: pubkey_fuzz
For issues and ideas: https://github.com/ossf/fuzz-introspector/issues

Fuzz blockers

The following nodes represent call sites where fuzz blockers occur.

Amount of callsites blocked Calltree index Parent function Callsite Largest blocked function
45 15 sshlog call site: 00015 match_pattern_list
44 157 sshkey_ssh_name_from_type_nid call site: 00157 sshkey_putb
13 91 sshkey_type_is_cert call site: 00091 sshkey_match_keyname_to_sigalgs
10 127 sshkey_impl_from_key call site: 00127 helper_by_key
8 6 sshbuf_fromb call site: 00006 ssh_signal
3 123 sshkey_free call site: 00123 pkcs11_key_free
2 147 recallocarray call site: 00147 __errno_location
2 154 sshbuf_allocate call site: 00154 sshkey_ssh_name_from_type_nid
1 68 sshbuf_set_parent call site: 00068 sshbuf_free
1 88 type_from_name call site: 00088 strcasecmp
1 117 cert_new call site: 00117 cert_free
1 150 recallocarray call site: 00150 memset

Fuzzer calltree

0 LLVMFuzzerTestOneInput [function] [call site] 00000
1 sshkey_from_blob [function] [call site] 00001
2 sshbuf_from [function] [call site] 00002
3 calloc [call site] 00003
2 sshkey_from_blob_internal [function] [call site] 00004
3 sshbuf_fromb [function] [call site] 00005
4 sshbuf_check_sanity [function] [call site] 00006
5 ssh_signal [function] [call site] 00007
6 memset [call site] 00008
6 sigfillset [call site] 00009
6 sigaction [call site] 00010
6 strsignal [call site] 00011
6 __errno_location [call site] 00012
6 strerror [call site] 00013
6 sshlog [function] [call site] 00014
7 sshlogv [function] [call site] 00015
8 strrchr [call site] 00016
8 getpid [call site] 00017
8 snprintf [call site] 00018
8 match_pattern_list [function] [call site] 00019
9 strlen [call site] 00020
9 __ctype_b_loc [call site] 00021
9 tolower [call site] 00022
9 match_pattern [function] [call site] 00023
10 strlen [call site] 00024
10 xcalloc [function] [call site] 00025
11 sshfatal [function] [call site] 00026
12 sshlogv [function] [call site] 00027
13 snprintf [call site] 00028
13 snprintf [call site] 00029
13 strlcpy [function] [call site] 00030
13 do_log [function] [call site] 00031
14 __errno_location [call site] 00032
14 snprintf [call site] 00033
14 vsnprintf [call site] 00034
14 vsnprintf [call site] 00035
14 snprintf [call site] 00036
14 strlcpy [function] [call site] 00037
14 strnvis [function] [call site] 00038
15 __ctype_b_loc [call site] 00039
15 vis [function] [call site] 00040
16 __ctype_b_loc [call site] 00041
16 __ctype_b_loc [call site] 00042
15 vis [function] [call site] 00043
14 snprintf [call site] 00044
14 strlen [call site] 00045
14 write [call site] 00046
14 openlog [call site] 00047
14 syslog [call site] 00048
14 closelog [call site] 00049
14 __errno_location [call site] 00050
12 cleanup_exit [function] [call site] 00051
13 _exit [call site] 00052
11 sshfatal [function] [call site] 00053
11 calloc [call site] 00054
11 sshfatal [function] [call site] 00055
10 xcalloc [function] [call site] 00056
10 epsilon_closure [function] [call site] 00057
10 memset [call site] 00058
10 epsilon_closure [function] [call site] 00059
5 raise [call site] 00060
4 sshbuf_ptr [function] [call site] 00061
5 sshbuf_check_sanity [function] [call site] 00062
4 sshbuf_len [function] [call site] 00063
5 sshbuf_check_sanity [function] [call site] 00064
4 sshbuf_from [function] [call site] 00065
4 sshbuf_set_parent [function] [call site] 00066
5 sshbuf_check_sanity [function] [call site] 00067
5 sshbuf_check_sanity [function] [call site] 00068
4 sshbuf_free [function] [call site] 00069
5 sshbuf_check_sanity [function] [call site] 00070
5 sshbuf_free [function] [call site] 00071
6 freezero [function] [call site] 00072
7 explicit_bzero [call site] 00073
6 freezero [function] [call site] 00074
3 sshbuf_get_cstring [function] [call site] 00075
4 sshbuf_peek_string_direct [function] [call site] 00076
5 sshbuf_ptr [function] [call site] 00077
5 sshbuf_len [function] [call site] 00078
5 sshbuf_len [function] [call site] 00079
4 memchr [call site] 00080
4 sshbuf_get_string_direct [function] [call site] 00081
5 sshbuf_peek_string_direct [function] [call site] 00082
5 sshbuf_consume [function] [call site] 00083
6 sshbuf_check_sanity [function] [call site] 00084
6 sshbuf_len [function] [call site] 00085
3 sshkey_type_from_name [function] [call site] 00086
4 type_from_name [function] [call site] 00087
5 strcmp [call site] 00088
5 strcasecmp [call site] 00089
3 sshkey_type_is_cert [function] [call site] 00090
4 sshkey_impl_from_type [function] [call site] 00091
3 sshkey_match_keyname_to_sigalgs [function] [call site] 00092
4 sshkey_type_from_name [function] [call site] 00093
4 match_pattern_list [function] [call site] 00094
4 match_pattern_list [function] [call site] 00095
4 match_pattern_list [function] [call site] 00096
4 match_pattern_list [function] [call site] 00097
4 match_pattern_list [function] [call site] 00098
4 match_pattern_list [function] [call site] 00099
4 match_pattern_list [function] [call site] 00100
4 match_pattern_list [function] [call site] 00101
4 match_pattern_list [function] [call site] 00102
4 match_pattern_list [function] [call site] 00103
4 match_pattern_list [function] [call site] 00104
3 sshkey_impl_from_type [function] [call site] 00105
3 sshkey_new [function] [call site] 00106
4 sshkey_impl_from_type [function] [call site] 00107
4 calloc [call site] 00108
4 sshkey_is_cert [function] [call site] 00109
5 sshkey_type_is_cert [function] [call site] 00110
4 cert_new [function] [call site] 00111
5 calloc [call site] 00112
5 sshbuf_new [function] [call site] 00113
6 calloc [call site] 00114
6 calloc [call site] 00115
5 sshbuf_new [function] [call site] 00116
5 sshbuf_new [function] [call site] 00117
5 cert_free [function] [call site] 00118
6 sshbuf_free [function] [call site] 00119
6 sshbuf_free [function] [call site] 00120
6 sshbuf_free [function] [call site] 00121
6 sshkey_free [function] [call site] 00122
7 sshkey_free_contents [function] [call site] 00123
8 pkcs11_key_free [function] [call site] 00124
9 sshkey_type [function] [call site] 00125
10 sshkey_impl_from_key [function] [call site] 00126
11 sshkey_impl_from_type_nid [function] [call site] 00127
9 sshlog [function] [call site] 00128
9 helper_by_key [function] [call site] 00129
10 sshbuf_new [function] [call site] 00130
10 sshfatal [function] [call site] 00131
10 sshkey_putb [function] [call site] 00132
11 to_blob_buf [function] [call site] 00133
12 sshkey_type_plain [function] [call site] 00134
12 sshkey_type_is_cert [function] [call site] 00135
12 sshbuf_len [function] [call site] 00136
12 sshbuf_putb [function] [call site] 00137
13 sshbuf_ptr [function] [call site] 00138
13 sshbuf_len [function] [call site] 00139
13 sshbuf_put [function] [call site] 00140
14 sshbuf_reserve [function] [call site] 00141
15 sshbuf_allocate [function] [call site] 00142
16 sshbuf_check_reserve [function] [call site] 00143
17 sshbuf_check_sanity [function] [call site] 00144
16 sshbuf_maybe_pack [function] [call site] 00145
16 recallocarray [function] [call site] 00146
17 calloc [call site] 00147
17 __errno_location [call site] 00148
17 __errno_location [call site] 00149
17 getpagesize [call site] 00150
17 memset [call site] 00151
17 memset [call site] 00152
17 explicit_bzero [call site] 00153
16 sshbuf_check_reserve [function] [call site] 00154
12 sshkey_impl_from_type [function] [call site] 00155
12 sshkey_ssh_name_from_type_nid [function] [call site] 00156
13 sshkey_impl_from_type_nid [function] [call site] 00157
12 sshbuf_put_cstring [function] [call site] 00158
13 strlen [call site] 00159
13 sshbuf_put_string [function] [call site] 00160
14 sshbuf_reserve [function] [call site] 00161
10 ssh_err [function] [call site] 00162
11 ssherr_libcrypto [function] [call site] 00163
12 OPENSSL_init_crypto [call site] 00164
12 ERR_get_error_line_data [call site] 00165
12 ERR_error_string_n [call site] 00166
12 snprintf [call site] 00167
12 sshlog [function] [call site] 00168
12 ERR_reason_error_string [call site] 00169
12 snprintf [call site] 00170
11 __errno_location [call site] 00171
11 strerror [call site] 00172
10 sshfatal [function] [call site] 00173
10 sshbuf_equals [function] [call site] 00174
11 sshbuf_ptr [function] [call site] 00175
11 sshbuf_len [function] [call site] 00176
11 sshbuf_len [function] [call site] 00177
11 sshbuf_ptr [function] [call site] 00178
11 sshbuf_len [function] [call site] 00179
11 memcmp [call site] 00180
10 sshbuf_free [function] [call site] 00181
10 sshbuf_free [function] [call site] 00182
9 sshkey_type [function] [call site] 00183
9 sshfatal [function] [call site] 00184
9 sshbuf_new [function] [call site] 00185
9 sshfatal [function] [call site] 00186
9 sshkey_putb [function] [call site] 00187
9 ssh_err [function] [call site] 00188
9 sshfatal [function] [call site] 00189
9 sshbuf_equals [function] [call site] 00190
9 sshfatal [function] [call site] 00191
9 xrecallocarray [function] [call site] 00192
10 recallocarray [function] [call site] 00193
10 sshfatal [function] [call site] 00194
9 helper_terminate [function] [call site] 00195
10 sshfatal [function] [call site] 00196
10 sshlog [function] [call site] 00197
10 close [call site] 00198
10 sshfatal [function] [call site] 00199
10 xrecallocarray [function] [call site] 00200
10 sshbuf_free [function] [call site] 00201
8 sshkey_impl_from_type [function] [call site] 00202
8 sshkey_is_cert [function] [call site] 00203
8 cert_free [function] [call site] 00204
9 freezero [function] [call site] 00205
8 freezero [function] [call site] 00206
8 sshkey_prekey_free [function] [call site] 00207
9 munmap [call site] 00208
7 freezero [function] [call site] 00209
4 sshkey_free [function] [call site] 00210
3 sshkey_type_is_cert [function] [call site] 00211
3 sshbuf_get_string_direct [function] [call site] 00212
3 sshkey_is_cert [function] [call site] 00213
3 cert_parse [function] [call site] 00214
4 sshbuf_putb [function] [call site] 00215
4 sshbuf_get_u64 [function] [call site] 00216
5 sshbuf_ptr [function] [call site] 00217
5 sshbuf_consume [function] [call site] 00218
4 sshbuf_get_u32 [function] [call site] 00219
5 sshbuf_ptr [function] [call site] 00220
5 sshbuf_consume [function] [call site] 00221
4 sshbuf_get_cstring [function] [call site] 00222
4 sshbuf_froms [function] [call site] 00223
5 sshbuf_peek_string_direct [function] [call site] 00224
5 sshbuf_from [function] [call site] 00225
5 sshbuf_consume [function] [call site] 00226
5 sshbuf_set_parent [function] [call site] 00227
5 sshbuf_free [function] [call site] 00228
4 sshbuf_get_u64 [function] [call site] 00229
4 sshbuf_get_u64 [function] [call site] 00230
4 sshbuf_froms [function] [call site] 00231
4 sshbuf_froms [function] [call site] 00232
4 sshbuf_get_string_direct [function] [call site] 00233
4 sshbuf_froms [function] [call site] 00234
4 sshbuf_len [function] [call site] 00235
4 sshbuf_get_string [function] [call site] 00236
5 sshbuf_get_string_direct [function] [call site] 00237
4 sshkey_get_sigtype [function] [call site] 00238
5 sshbuf_from [function] [call site] 00239
5 sshbuf_get_cstring [function] [call site] 00240
5 sshbuf_free [function] [call site] 00241
4 match_pattern_list [function] [call site] 00242
4 sshkey_from_blob_internal [function] [call site] 00243
5 sshbuf_len [function] [call site] 00244
5 sshbuf_free [function] [call site] 00245
5 sshkey_free [function] [call site] 00246
4 sshkey_type_is_valid_ca [function] [call site] 00247
5 sshkey_impl_from_type [function] [call site] 00248
4 sshbuf_len [function] [call site] 00249
4 sshbuf_get_cstring [function] [call site] 00250
4 recallocarray [function] [call site] 00251
4 sshbuf_putb [function] [call site] 00252
4 sshbuf_putb [function] [call site] 00253
4 sshbuf_len [function] [call site] 00254
4 sshbuf_get_string_direct [function] [call site] 00255
4 sshbuf_get_string_direct [function] [call site] 00256
4 sshbuf_reset [function] [call site] 00257
5 sshbuf_check_sanity [function] [call site] 00258
5 recallocarray [function] [call site] 00259
5 explicit_bzero [call site] 00260
4 sshbuf_len [function] [call site] 00261
4 sshbuf_get_string_direct [function] [call site] 00262
4 sshbuf_get_string_direct [function] [call site] 00263
4 sshbuf_reset [function] [call site] 00264
4 sshbuf_ptr [function] [call site] 00265
4 sshkey_verify [function] [call site] 00266
5 sshkey_impl_from_key [function] [call site] 00267
4 sshbuf_free [function] [call site] 00268
4 sshbuf_free [function] [call site] 00269
4 sshbuf_free [function] [call site] 00270
4 sshbuf_free [function] [call site] 00271
2 sshbuf_free [function] [call site] 00272
1 sshkey_free [function] [call site] 00273