crypto/x509/x509_vfy.c:1071: error: NULL_DEREFERENCE
  pointer `crl_issuer` last assigned on line 1070 could be null and is dereferenced by call to `X509_get_subject_name()` at line 1071, column 27.
Showing all 52 steps of the trace


crypto/x509/x509_vfy.c:1048:1: start of procedure crl_akid_check()
1046.   }
1047.   
1048. > static void crl_akid_check(X509_STORE_CTX *ctx, X509_CRL *crl,
1049.                              X509 **pissuer, int *pcrl_score)
1050.   {

crypto/x509/x509_vfy.c:1051:5: 
1049.                              X509 **pissuer, int *pcrl_score)
1050.   {
1051. >     X509 *crl_issuer = NULL;
1052.       X509_NAME *cnm = X509_CRL_get_issuer(crl);
1053.       int cidx = ctx->error_depth;

crypto/x509/x509_vfy.c:1052:5: 
1050.   {
1051.       X509 *crl_issuer = NULL;
1052. >     X509_NAME *cnm = X509_CRL_get_issuer(crl);
1053.       int cidx = ctx->error_depth;
1054.       int i;

crypto/x509/x509cset.c:156:1: start of procedure X509_CRL_get_issuer()
  154.   }
  155.   
  156. > X509_NAME *X509_CRL_get_issuer(X509_CRL *crl)
  157.   {
  158.       return crl->crl.issuer;

crypto/x509/x509cset.c:158:5: 
  156.   X509_NAME *X509_CRL_get_issuer(X509_CRL *crl)
  157.   {
  158. >     return crl->crl.issuer;
  159.   }
  160.   

crypto/x509/x509cset.c:159:1: return from a call to X509_CRL_get_issuer
  157.   {
  158.       return crl->crl.issuer;
  159. > }
  160.   
  161.   STACK_OF(X509_EXTENSION) *X509_CRL_get0_extensions(X509_CRL *crl)

crypto/x509/x509_vfy.c:1053:5: 
1051.       X509 *crl_issuer = NULL;
1052.       X509_NAME *cnm = X509_CRL_get_issuer(crl);
1053. >     int cidx = ctx->error_depth;
1054.       int i;
1055.   

crypto/x509/x509_vfy.c:1056:9: 
1054.       int i;
1055.   
1056. >     if (cidx != sk_X509_num(ctx->chain) - 1)
1057.           cidx++;
1058.   

include/openssl/x509.h:170:1: start of procedure sk_X509_num()
  168.   typedef struct x509_cinf_st X509_CINF;
  169.   
  170. > DEFINE_STACK_OF(X509)
  171.   
  172.   /* This is used for a table of trust checking functions */

crypto/stack/stack.c:317:1: start of procedure sk_num()
    315.   }
    316.   
    317. > int sk_num(const _STACK *st)
    318.   {
    319.       if (st == NULL)

crypto/stack/stack.c:319:9: Taking true branch
    317.   int sk_num(const _STACK *st)
    318.   {
    319.       if (st == NULL)
                   ^
    320.           return -1;
    321.       return st->num;

crypto/stack/stack.c:320:9: 
    318.   {
    319.       if (st == NULL)
    320. >         return -1;
    321.       return st->num;
    322.   }

crypto/stack/stack.c:322:1: return from a call to sk_num
    320.           return -1;
    321.       return st->num;
    322. > }
    323.   
    324.   void *sk_value(const _STACK *st, int i)

include/openssl/x509.h:170:1: return from a call to sk_X509_num
  168.   typedef struct x509_cinf_st X509_CINF;
  169.   
  170. > DEFINE_STACK_OF(X509)
  171.   
  172.   /* This is used for a table of trust checking functions */

crypto/x509/x509_vfy.c:1056:9: Taking true branch
1054.       int i;
1055.   
1056.       if (cidx != sk_X509_num(ctx->chain) - 1)
                ^
1057.           cidx++;
1058.   

crypto/x509/x509_vfy.c:1057:9: 
1055.   
1056.       if (cidx != sk_X509_num(ctx->chain) - 1)
1057. >         cidx++;
1058.   
1059.       crl_issuer = sk_X509_value(ctx->chain, cidx);

crypto/x509/x509_vfy.c:1059:5: 
1057.           cidx++;
1058.   
1059. >     crl_issuer = sk_X509_value(ctx->chain, cidx);
1060.   
1061.       if (X509_check_akid(crl_issuer, crl->akid) == X509_V_OK) {

include/openssl/x509.h:170:1: start of procedure sk_X509_value()
  168.   typedef struct x509_cinf_st X509_CINF;
  169.   
  170. > DEFINE_STACK_OF(X509)
  171.   
  172.   /* This is used for a table of trust checking functions */

crypto/stack/stack.c:324:1: start of procedure sk_value()
    322.   }
    323.   
    324. > void *sk_value(const _STACK *st, int i)
    325.   {
    326.       if (!st || (i < 0) || (i >= st->num))

crypto/stack/stack.c:326:10: Taking true branch
    324.   void *sk_value(const _STACK *st, int i)
    325.   {
    326.       if (!st || (i < 0) || (i >= st->num))
                    ^
    327.           return NULL;
    328.       return st->data[i];

crypto/stack/stack.c:327:9: 
    325.   {
    326.       if (!st || (i < 0) || (i >= st->num))
    327. >         return NULL;
    328.       return st->data[i];
    329.   }

crypto/stack/stack.c:329:1: return from a call to sk_value
    327.           return NULL;
    328.       return st->data[i];
    329. > }
    330.   
    331.   void *sk_set(_STACK *st, int i, void *value)

include/openssl/x509.h:170:1: return from a call to sk_X509_value
  168.   typedef struct x509_cinf_st X509_CINF;
  169.   
  170. > DEFINE_STACK_OF(X509)
  171.   
  172.   /* This is used for a table of trust checking functions */

crypto/x509/x509_vfy.c:1061:9: 
1059.       crl_issuer = sk_X509_value(ctx->chain, cidx);
1060.   
1061. >     if (X509_check_akid(crl_issuer, crl->akid) == X509_V_OK) {
1062.           if (*pcrl_score & CRL_SCORE_ISSUER_NAME) {
1063.               *pcrl_score |= CRL_SCORE_AKID | CRL_SCORE_ISSUER_CERT;

crypto/x509v3/v3_purp.c:813:1: start of procedure X509_check_akid()
  811.   }
  812.   
  813. > int X509_check_akid(X509 *issuer, AUTHORITY_KEYID *akid)
  814.   {
  815.   

crypto/x509v3/v3_purp.c:816:10: Taking false branch
  814.   {
  815.   
  816.       if (!akid)
                  ^
  817.           return X509_V_OK;
  818.   

crypto/x509v3/v3_purp.c:820:9: Taking false branch
  818.   
  819.       /* Check key ids (if present) */
  820.       if (akid->keyid && issuer->skid &&
                 ^
  821.           ASN1_OCTET_STRING_cmp(akid->keyid, issuer->skid))
  822.           return X509_V_ERR_AKID_SKID_MISMATCH;

crypto/x509v3/v3_purp.c:824:9: Taking false branch
  822.           return X509_V_ERR_AKID_SKID_MISMATCH;
  823.       /* Check serial number */
  824.       if (akid->serial &&
                 ^
  825.           ASN1_INTEGER_cmp(X509_get_serialNumber(issuer), akid->serial))
  826.           return X509_V_ERR_AKID_ISSUER_SERIAL_MISMATCH;

crypto/x509v3/v3_purp.c:828:9: Taking false branch
  826.           return X509_V_ERR_AKID_ISSUER_SERIAL_MISMATCH;
  827.       /* Check issuer name */
  828.       if (akid->issuer) {
                 ^
  829.           /*
  830.            * Ugh, for some peculiar reason AKID includes SEQUENCE OF

crypto/x509v3/v3_purp.c:849:5: 
  847.               return X509_V_ERR_AKID_ISSUER_SERIAL_MISMATCH;
  848.       }
  849. >     return X509_V_OK;
  850.   }
  851.   

crypto/x509v3/v3_purp.c:850:1: return from a call to X509_check_akid
  848.       }
  849.       return X509_V_OK;
  850. > }
  851.   
  852.   uint32_t X509_get_extension_flags(X509 *x)

crypto/x509/x509_vfy.c:1061:9: Taking true branch
1059.       crl_issuer = sk_X509_value(ctx->chain, cidx);
1060.   
1061.       if (X509_check_akid(crl_issuer, crl->akid) == X509_V_OK) {
                ^
1062.           if (*pcrl_score & CRL_SCORE_ISSUER_NAME) {
1063.               *pcrl_score |= CRL_SCORE_AKID | CRL_SCORE_ISSUER_CERT;

crypto/x509/x509_vfy.c:1062:13: Taking false branch
1060.   
1061.       if (X509_check_akid(crl_issuer, crl->akid) == X509_V_OK) {
1062.           if (*pcrl_score & CRL_SCORE_ISSUER_NAME) {
                    ^
1063.               *pcrl_score |= CRL_SCORE_AKID | CRL_SCORE_ISSUER_CERT;
1064.               *pissuer = crl_issuer;

crypto/x509/x509_vfy.c:1069:10: 
1067.       }
1068.   
1069. >     for (cidx++; cidx < sk_X509_num(ctx->chain); cidx++) {
1070.           crl_issuer = sk_X509_value(ctx->chain, cidx);
1071.           if (X509_NAME_cmp(X509_get_subject_name(crl_issuer), cnm))

crypto/x509/x509_vfy.c:1069:18: 
1067.       }
1068.   
1069. >     for (cidx++; cidx < sk_X509_num(ctx->chain); cidx++) {
1070.           crl_issuer = sk_X509_value(ctx->chain, cidx);
1071.           if (X509_NAME_cmp(X509_get_subject_name(crl_issuer), cnm))

include/openssl/x509.h:170:1: start of procedure sk_X509_num()
  168.   typedef struct x509_cinf_st X509_CINF;
  169.   
  170. > DEFINE_STACK_OF(X509)
  171.   
  172.   /* This is used for a table of trust checking functions */

crypto/stack/stack.c:317:1: start of procedure sk_num()
    315.   }
    316.   
    317. > int sk_num(const _STACK *st)
    318.   {
    319.       if (st == NULL)

crypto/stack/stack.c:319:9: Taking true branch
    317.   int sk_num(const _STACK *st)
    318.   {
    319.       if (st == NULL)
                   ^
    320.           return -1;
    321.       return st->num;

crypto/stack/stack.c:320:9: 
    318.   {
    319.       if (st == NULL)
    320. >         return -1;
    321.       return st->num;
    322.   }

crypto/stack/stack.c:322:1: return from a call to sk_num
    320.           return -1;
    321.       return st->num;
    322. > }
    323.   
    324.   void *sk_value(const _STACK *st, int i)

include/openssl/x509.h:170:1: return from a call to sk_X509_num
  168.   typedef struct x509_cinf_st X509_CINF;
  169.   
  170. > DEFINE_STACK_OF(X509)
  171.   
  172.   /* This is used for a table of trust checking functions */

crypto/x509/x509_vfy.c:1069:18: Loop condition is true. Entering loop body
1067.       }
1068.   
1069.       for (cidx++; cidx < sk_X509_num(ctx->chain); cidx++) {
                         ^
1070.           crl_issuer = sk_X509_value(ctx->chain, cidx);
1071.           if (X509_NAME_cmp(X509_get_subject_name(crl_issuer), cnm))

crypto/x509/x509_vfy.c:1070:9: 
1068.   
1069.       for (cidx++; cidx < sk_X509_num(ctx->chain); cidx++) {
1070. >         crl_issuer = sk_X509_value(ctx->chain, cidx);
1071.           if (X509_NAME_cmp(X509_get_subject_name(crl_issuer), cnm))
1072.               continue;

include/openssl/x509.h:170:1: start of procedure sk_X509_value()
  168.   typedef struct x509_cinf_st X509_CINF;
  169.   
  170. > DEFINE_STACK_OF(X509)
  171.   
  172.   /* This is used for a table of trust checking functions */

crypto/stack/stack.c:324:1: start of procedure sk_value()
    322.   }
    323.   
    324. > void *sk_value(const _STACK *st, int i)
    325.   {
    326.       if (!st || (i < 0) || (i >= st->num))

crypto/stack/stack.c:326:10: Taking true branch
    324.   void *sk_value(const _STACK *st, int i)
    325.   {
    326.       if (!st || (i < 0) || (i >= st->num))
                    ^
    327.           return NULL;
    328.       return st->data[i];

crypto/stack/stack.c:327:9: 
    325.   {
    326.       if (!st || (i < 0) || (i >= st->num))
    327. >         return NULL;
    328.       return st->data[i];
    329.   }

crypto/stack/stack.c:329:1: return from a call to sk_value
    327.           return NULL;
    328.       return st->data[i];
    329. > }
    330.   
    331.   void *sk_set(_STACK *st, int i, void *value)

include/openssl/x509.h:170:1: return from a call to sk_X509_value
  168.   typedef struct x509_cinf_st X509_CINF;
  169.   
  170. > DEFINE_STACK_OF(X509)
  171.   
  172.   /* This is used for a table of trust checking functions */

crypto/x509/x509_vfy.c:1071:13: 
1069.       for (cidx++; cidx < sk_X509_num(ctx->chain); cidx++) {
1070.           crl_issuer = sk_X509_value(ctx->chain, cidx);
1071. >         if (X509_NAME_cmp(X509_get_subject_name(crl_issuer), cnm))
1072.               continue;
1073.           if (X509_check_akid(crl_issuer, crl->akid) == X509_V_OK) {

crypto/x509/x509_cmp.c:149:1: start of procedure X509_get_subject_name()
  147.   #endif
  148.   
  149. > X509_NAME *X509_get_subject_name(X509 *a)
  150.   {
  151.       return (a->cert_info.subject);

crypto/x509/x509_cmp.c:151:5: 
  149.   X509_NAME *X509_get_subject_name(X509 *a)
  150.   {
  151. >     return (a->cert_info.subject);
  152.   }
  153.   

static void crl_akid_check(X509_STORE_CTX *ctx, X509_CRL *crl,
                           X509 **pissuer, int *pcrl_score)
{
    X509 *crl_issuer = NULL;
    X509_NAME *cnm = X509_CRL_get_issuer(crl);
    int cidx = ctx->error_depth;
    int i;
    if (cidx != sk_X509_num(ctx->chain) - 1)
        cidx++;
    crl_issuer = sk_X509_value(ctx->chain, cidx);
    if (X509_check_akid(crl_issuer, crl->akid) == X509_V_OK) {
        if (*pcrl_score & CRL_SCORE_ISSUER_NAME) {
            *pcrl_score |= CRL_SCORE_AKID | CRL_SCORE_ISSUER_CERT;
            *pissuer = crl_issuer;
            return;
        }
    }
    for (cidx++; cidx < sk_X509_num(ctx->chain); cidx++) {
        crl_issuer = sk_X509_value(ctx->chain, cidx);
        if (X509_NAME_cmp(X509_get_subject_name(crl_issuer), cnm))
            continue;
        if (X509_check_akid(crl_issuer, crl->akid) == X509_V_OK) {
            *pcrl_score |= CRL_SCORE_AKID | CRL_SCORE_SAME_PATH;
            *pissuer = crl_issuer;
            return;
        }
    }
    if (!(ctx->param->flags & X509_V_FLAG_EXTENDED_CRL_SUPPORT))
        return;
    for (i = 0; i < sk_X509_num(ctx->untrusted); i++) {
        crl_issuer = sk_X509_value(ctx->untrusted, i);
        if (X509_NAME_cmp(X509_get_subject_name(crl_issuer), cnm))
            continue;
        if (X509_check_akid(crl_issuer, crl->akid) == X509_V_OK) {
            *pissuer = crl_issuer;
            *pcrl_score |= CRL_SCORE_AKID;
            return;
        }
    }
}
['static void crl_akid_check(X509_STORE_CTX *ctx, X509_CRL *crl,\n                           X509 **pissuer, int *pcrl_score)\n{\n    X509 *crl_issuer = NULL;\n    X509_NAME *cnm = X509_CRL_get_issuer(crl);\n    int cidx = ctx->error_depth;\n    int i;\n    if (cidx != sk_X509_num(ctx->chain) - 1)\n        cidx++;\n    crl_issuer = sk_X509_value(ctx->chain, cidx);\n    if (X509_check_akid(crl_issuer, crl->akid) == X509_V_OK) {\n        if (*pcrl_score & CRL_SCORE_ISSUER_NAME) {\n            *pcrl_score |= CRL_SCORE_AKID | CRL_SCORE_ISSUER_CERT;\n            *pissuer = crl_issuer;\n            return;\n        }\n    }\n    for (cidx++; cidx < sk_X509_num(ctx->chain); cidx++) {\n        crl_issuer = sk_X509_value(ctx->chain, cidx);\n        if (X509_NAME_cmp(X509_get_subject_name(crl_issuer), cnm))\n            continue;\n        if (X509_check_akid(crl_issuer, crl->akid) == X509_V_OK) {\n            *pcrl_score |= CRL_SCORE_AKID | CRL_SCORE_SAME_PATH;\n            *pissuer = crl_issuer;\n            return;\n        }\n    }\n    if (!(ctx->param->flags & X509_V_FLAG_EXTENDED_CRL_SUPPORT))\n        return;\n    for (i = 0; i < sk_X509_num(ctx->untrusted); i++) {\n        crl_issuer = sk_X509_value(ctx->untrusted, i);\n        if (X509_NAME_cmp(X509_get_subject_name(crl_issuer), cnm))\n            continue;\n        if (X509_check_akid(crl_issuer, crl->akid) == X509_V_OK) {\n            *pissuer = crl_issuer;\n            *pcrl_score |= CRL_SCORE_AKID;\n            return;\n        }\n    }\n}', 'X509_NAME *X509_CRL_get_issuer(X509_CRL *crl)\n{\n    return crl->crl.issuer;\n}', 'DEFINE_STACK_OF(X509)', 'int sk_num(const _STACK *st)\n{\n    if (st == NULL)\n        return -1;\n    return st->num;\n}', 'void *sk_value(const _STACK *st, int i)\n{\n    if (!st || (i < 0) || (i >= st->num))\n        return NULL;\n    return st->data[i];\n}', 'int X509_check_akid(X509 *issuer, AUTHORITY_KEYID *akid)\n{\n    if (!akid)\n        return X509_V_OK;\n    if (akid->keyid && issuer->skid &&\n        ASN1_OCTET_STRING_cmp(akid->keyid, issuer->skid))\n        return X509_V_ERR_AKID_SKID_MISMATCH;\n    if (akid->serial &&\n        ASN1_INTEGER_cmp(X509_get_serialNumber(issuer), akid->serial))\n        return X509_V_ERR_AKID_ISSUER_SERIAL_MISMATCH;\n    if (akid->issuer) {\n        GENERAL_NAMES *gens;\n        GENERAL_NAME *gen;\n        X509_NAME *nm = NULL;\n        int i;\n        gens = akid->issuer;\n        for (i = 0; i < sk_GENERAL_NAME_num(gens); i++) {\n            gen = sk_GENERAL_NAME_value(gens, i);\n            if (gen->type == GEN_DIRNAME) {\n                nm = gen->d.dirn;\n                break;\n            }\n        }\n        if (nm && X509_NAME_cmp(nm, X509_get_issuer_name(issuer)))\n            return X509_V_ERR_AKID_ISSUER_SERIAL_MISMATCH;\n    }\n    return X509_V_OK;\n}', 'X509_NAME *X509_get_subject_name(X509 *a)\n{\n    return (a->cert_info.subject);\n}']