crypto/x509/x509_vfy.c:1103: error: NULL_DEREFERENCE
  pointer `crl_issuer` last assigned on line 1102 could be null and is dereferenced by call to `X509_get_subject_name()` at line 1103, column 27.
Showing all 52 steps of the trace


crypto/x509/x509_vfy.c:1080:1: start of procedure crl_akid_check()
1078.   }
1079.   
1080. > static void crl_akid_check(X509_STORE_CTX *ctx, X509_CRL *crl,
1081.                              X509 **pissuer, int *pcrl_score)
1082.   {

crypto/x509/x509_vfy.c:1083:5: 
1081.                              X509 **pissuer, int *pcrl_score)
1082.   {
1083. >     X509 *crl_issuer = NULL;
1084.       X509_NAME *cnm = X509_CRL_get_issuer(crl);
1085.       int cidx = ctx->error_depth;

crypto/x509/x509_vfy.c:1084:5: 
1082.   {
1083.       X509 *crl_issuer = NULL;
1084. >     X509_NAME *cnm = X509_CRL_get_issuer(crl);
1085.       int cidx = ctx->error_depth;
1086.       int i;

crypto/x509/x509cset.c:113:1: start of procedure X509_CRL_get_issuer()
  111.   }
  112.   
  113. > X509_NAME *X509_CRL_get_issuer(X509_CRL *crl)
  114.   {
  115.       return crl->crl.issuer;

crypto/x509/x509cset.c:115:5: 
  113.   X509_NAME *X509_CRL_get_issuer(X509_CRL *crl)
  114.   {
  115. >     return crl->crl.issuer;
  116.   }
  117.   

crypto/x509/x509cset.c:116:1: return from a call to X509_CRL_get_issuer
  114.   {
  115.       return crl->crl.issuer;
  116. > }
  117.   
  118.   STACK_OF(X509_EXTENSION) *X509_CRL_get0_extensions(X509_CRL *crl)

crypto/x509/x509_vfy.c:1085:5: 
1083.       X509 *crl_issuer = NULL;
1084.       X509_NAME *cnm = X509_CRL_get_issuer(crl);
1085. >     int cidx = ctx->error_depth;
1086.       int i;
1087.   

crypto/x509/x509_vfy.c:1088:9: 
1086.       int i;
1087.   
1088. >     if (cidx != sk_X509_num(ctx->chain) - 1)
1089.           cidx++;
1090.   

include/openssl/x509.h:104:1: start of procedure sk_X509_num()
  102.   typedef struct x509_cinf_st X509_CINF;
  103.   
  104. > DEFINE_STACK_OF(X509)
  105.   
  106.   /* This is used for a table of trust checking functions */

crypto/stack/stack.c:270:1: start of procedure OPENSSL_sk_num()
    268.   }
    269.   
    270. > int OPENSSL_sk_num(const OPENSSL_STACK *st)
    271.   {
    272.       if (st == NULL)

crypto/stack/stack.c:272:9: Taking true branch
    270.   int OPENSSL_sk_num(const OPENSSL_STACK *st)
    271.   {
    272.       if (st == NULL)
                   ^
    273.           return -1;
    274.       return st->num;

crypto/stack/stack.c:273:9: 
    271.   {
    272.       if (st == NULL)
    273. >         return -1;
    274.       return st->num;
    275.   }

crypto/stack/stack.c:275:1: return from a call to OPENSSL_sk_num
    273.           return -1;
    274.       return st->num;
    275. > }
    276.   
    277.   void *OPENSSL_sk_value(const OPENSSL_STACK *st, int i)

include/openssl/x509.h:104:1: return from a call to sk_X509_num
  102.   typedef struct x509_cinf_st X509_CINF;
  103.   
  104. > DEFINE_STACK_OF(X509)
  105.   
  106.   /* This is used for a table of trust checking functions */

crypto/x509/x509_vfy.c:1088:9: Taking true branch
1086.       int i;
1087.   
1088.       if (cidx != sk_X509_num(ctx->chain) - 1)
                ^
1089.           cidx++;
1090.   

crypto/x509/x509_vfy.c:1089:9: 
1087.   
1088.       if (cidx != sk_X509_num(ctx->chain) - 1)
1089. >         cidx++;
1090.   
1091.       crl_issuer = sk_X509_value(ctx->chain, cidx);

crypto/x509/x509_vfy.c:1091:5: 
1089.           cidx++;
1090.   
1091. >     crl_issuer = sk_X509_value(ctx->chain, cidx);
1092.   
1093.       if (X509_check_akid(crl_issuer, crl->akid) == X509_V_OK) {

include/openssl/x509.h:104:1: start of procedure sk_X509_value()
  102.   typedef struct x509_cinf_st X509_CINF;
  103.   
  104. > DEFINE_STACK_OF(X509)
  105.   
  106.   /* This is used for a table of trust checking functions */

crypto/stack/stack.c:277:1: start of procedure OPENSSL_sk_value()
    275.   }
    276.   
    277. > void *OPENSSL_sk_value(const OPENSSL_STACK *st, int i)
    278.   {
    279.       if (st == NULL || i < 0 || i >= st->num)

crypto/stack/stack.c:279:9: Taking true branch
    277.   void *OPENSSL_sk_value(const OPENSSL_STACK *st, int i)
    278.   {
    279.       if (st == NULL || i < 0 || i >= st->num)
                   ^
    280.           return NULL;
    281.       return st->data[i];

crypto/stack/stack.c:280:9: 
    278.   {
    279.       if (st == NULL || i < 0 || i >= st->num)
    280. >         return NULL;
    281.       return st->data[i];
    282.   }

crypto/stack/stack.c:282:1: return from a call to OPENSSL_sk_value
    280.           return NULL;
    281.       return st->data[i];
    282. > }
    283.   
    284.   void *OPENSSL_sk_set(OPENSSL_STACK *st, int i, void *value)

include/openssl/x509.h:104:1: return from a call to sk_X509_value
  102.   typedef struct x509_cinf_st X509_CINF;
  103.   
  104. > DEFINE_STACK_OF(X509)
  105.   
  106.   /* This is used for a table of trust checking functions */

crypto/x509/x509_vfy.c:1093:9: 
1091.       crl_issuer = sk_X509_value(ctx->chain, cidx);
1092.   
1093. >     if (X509_check_akid(crl_issuer, crl->akid) == X509_V_OK) {
1094.           if (*pcrl_score & CRL_SCORE_ISSUER_NAME) {
1095.               *pcrl_score |= CRL_SCORE_AKID | CRL_SCORE_ISSUER_CERT;

crypto/x509v3/v3_purp.c:764:1: start of procedure X509_check_akid()
  762.   }
  763.   
  764. > int X509_check_akid(X509 *issuer, AUTHORITY_KEYID *akid)
  765.   {
  766.   

crypto/x509v3/v3_purp.c:767:10: Taking false branch
  765.   {
  766.   
  767.       if (!akid)
                  ^
  768.           return X509_V_OK;
  769.   

crypto/x509v3/v3_purp.c:771:9: Taking false branch
  769.   
  770.       /* Check key ids (if present) */
  771.       if (akid->keyid && issuer->skid &&
                 ^
  772.           ASN1_OCTET_STRING_cmp(akid->keyid, issuer->skid))
  773.           return X509_V_ERR_AKID_SKID_MISMATCH;

crypto/x509v3/v3_purp.c:775:9: Taking false branch
  773.           return X509_V_ERR_AKID_SKID_MISMATCH;
  774.       /* Check serial number */
  775.       if (akid->serial &&
                 ^
  776.           ASN1_INTEGER_cmp(X509_get_serialNumber(issuer), akid->serial))
  777.           return X509_V_ERR_AKID_ISSUER_SERIAL_MISMATCH;

crypto/x509v3/v3_purp.c:779:9: Taking false branch
  777.           return X509_V_ERR_AKID_ISSUER_SERIAL_MISMATCH;
  778.       /* Check issuer name */
  779.       if (akid->issuer) {
                 ^
  780.           /*
  781.            * Ugh, for some peculiar reason AKID includes SEQUENCE OF

crypto/x509v3/v3_purp.c:800:5: 
  798.               return X509_V_ERR_AKID_ISSUER_SERIAL_MISMATCH;
  799.       }
  800. >     return X509_V_OK;
  801.   }
  802.   

crypto/x509v3/v3_purp.c:801:1: return from a call to X509_check_akid
  799.       }
  800.       return X509_V_OK;
  801. > }
  802.   
  803.   uint32_t X509_get_extension_flags(X509 *x)

crypto/x509/x509_vfy.c:1093:9: Taking true branch
1091.       crl_issuer = sk_X509_value(ctx->chain, cidx);
1092.   
1093.       if (X509_check_akid(crl_issuer, crl->akid) == X509_V_OK) {
                ^
1094.           if (*pcrl_score & CRL_SCORE_ISSUER_NAME) {
1095.               *pcrl_score |= CRL_SCORE_AKID | CRL_SCORE_ISSUER_CERT;

crypto/x509/x509_vfy.c:1094:13: Taking false branch
1092.   
1093.       if (X509_check_akid(crl_issuer, crl->akid) == X509_V_OK) {
1094.           if (*pcrl_score & CRL_SCORE_ISSUER_NAME) {
                    ^
1095.               *pcrl_score |= CRL_SCORE_AKID | CRL_SCORE_ISSUER_CERT;
1096.               *pissuer = crl_issuer;

crypto/x509/x509_vfy.c:1101:10: 
1099.       }
1100.   
1101. >     for (cidx++; cidx < sk_X509_num(ctx->chain); cidx++) {
1102.           crl_issuer = sk_X509_value(ctx->chain, cidx);
1103.           if (X509_NAME_cmp(X509_get_subject_name(crl_issuer), cnm))

crypto/x509/x509_vfy.c:1101:18: 
1099.       }
1100.   
1101. >     for (cidx++; cidx < sk_X509_num(ctx->chain); cidx++) {
1102.           crl_issuer = sk_X509_value(ctx->chain, cidx);
1103.           if (X509_NAME_cmp(X509_get_subject_name(crl_issuer), cnm))

include/openssl/x509.h:104:1: start of procedure sk_X509_num()
  102.   typedef struct x509_cinf_st X509_CINF;
  103.   
  104. > DEFINE_STACK_OF(X509)
  105.   
  106.   /* This is used for a table of trust checking functions */

crypto/stack/stack.c:270:1: start of procedure OPENSSL_sk_num()
    268.   }
    269.   
    270. > int OPENSSL_sk_num(const OPENSSL_STACK *st)
    271.   {
    272.       if (st == NULL)

crypto/stack/stack.c:272:9: Taking true branch
    270.   int OPENSSL_sk_num(const OPENSSL_STACK *st)
    271.   {
    272.       if (st == NULL)
                   ^
    273.           return -1;
    274.       return st->num;

crypto/stack/stack.c:273:9: 
    271.   {
    272.       if (st == NULL)
    273. >         return -1;
    274.       return st->num;
    275.   }

crypto/stack/stack.c:275:1: return from a call to OPENSSL_sk_num
    273.           return -1;
    274.       return st->num;
    275. > }
    276.   
    277.   void *OPENSSL_sk_value(const OPENSSL_STACK *st, int i)

include/openssl/x509.h:104:1: return from a call to sk_X509_num
  102.   typedef struct x509_cinf_st X509_CINF;
  103.   
  104. > DEFINE_STACK_OF(X509)
  105.   
  106.   /* This is used for a table of trust checking functions */

crypto/x509/x509_vfy.c:1101:18: Loop condition is true. Entering loop body
1099.       }
1100.   
1101.       for (cidx++; cidx < sk_X509_num(ctx->chain); cidx++) {
                         ^
1102.           crl_issuer = sk_X509_value(ctx->chain, cidx);
1103.           if (X509_NAME_cmp(X509_get_subject_name(crl_issuer), cnm))

crypto/x509/x509_vfy.c:1102:9: 
1100.   
1101.       for (cidx++; cidx < sk_X509_num(ctx->chain); cidx++) {
1102. >         crl_issuer = sk_X509_value(ctx->chain, cidx);
1103.           if (X509_NAME_cmp(X509_get_subject_name(crl_issuer), cnm))
1104.               continue;

include/openssl/x509.h:104:1: start of procedure sk_X509_value()
  102.   typedef struct x509_cinf_st X509_CINF;
  103.   
  104. > DEFINE_STACK_OF(X509)
  105.   
  106.   /* This is used for a table of trust checking functions */

crypto/stack/stack.c:277:1: start of procedure OPENSSL_sk_value()
    275.   }
    276.   
    277. > void *OPENSSL_sk_value(const OPENSSL_STACK *st, int i)
    278.   {
    279.       if (st == NULL || i < 0 || i >= st->num)

crypto/stack/stack.c:279:9: Taking true branch
    277.   void *OPENSSL_sk_value(const OPENSSL_STACK *st, int i)
    278.   {
    279.       if (st == NULL || i < 0 || i >= st->num)
                   ^
    280.           return NULL;
    281.       return st->data[i];

crypto/stack/stack.c:280:9: 
    278.   {
    279.       if (st == NULL || i < 0 || i >= st->num)
    280. >         return NULL;
    281.       return st->data[i];
    282.   }

crypto/stack/stack.c:282:1: return from a call to OPENSSL_sk_value
    280.           return NULL;
    281.       return st->data[i];
    282. > }
    283.   
    284.   void *OPENSSL_sk_set(OPENSSL_STACK *st, int i, void *value)

include/openssl/x509.h:104:1: return from a call to sk_X509_value
  102.   typedef struct x509_cinf_st X509_CINF;
  103.   
  104. > DEFINE_STACK_OF(X509)
  105.   
  106.   /* This is used for a table of trust checking functions */

crypto/x509/x509_vfy.c:1103:13: 
1101.       for (cidx++; cidx < sk_X509_num(ctx->chain); cidx++) {
1102.           crl_issuer = sk_X509_value(ctx->chain, cidx);
1103. >         if (X509_NAME_cmp(X509_get_subject_name(crl_issuer), cnm))
1104.               continue;
1105.           if (X509_check_akid(crl_issuer, crl->akid) == X509_V_OK) {

crypto/x509/x509_cmp.c:100:1: start of procedure X509_get_subject_name()
  98.   #endif
  99.   
  100. > X509_NAME *X509_get_subject_name(X509 *a)
  101.   {
  102.       return (a->cert_info.subject);

crypto/x509/x509_cmp.c:102:5: 
  100.   X509_NAME *X509_get_subject_name(X509 *a)
  101.   {
  102. >     return (a->cert_info.subject);
  103.   }
  104.   

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 OPENSSL_sk_num(const OPENSSL_STACK *st)\n{\n    if (st == NULL)\n        return -1;\n    return st->num;\n}', 'void *OPENSSL_sk_value(const OPENSSL_STACK *st, int i)\n{\n    if (st == NULL || 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}']