crypto/x509/x509_vfy.c:1190: error: NULL_DEREFERENCE
  pointer `crl_issuer` last assigned on line 1189 could be null and is dereferenced by call to `X509_get_subject_name()` at line 1190, column 27.
Showing all 52 steps of the trace


crypto/x509/x509_vfy.c:1167:1: start of procedure crl_akid_check()
1165.   }
1166.   
1167. > static void crl_akid_check(X509_STORE_CTX *ctx, X509_CRL *crl,
1168.                              X509 **pissuer, int *pcrl_score)
1169.   {

crypto/x509/x509_vfy.c:1170:5: 
1168.                              X509 **pissuer, int *pcrl_score)
1169.   {
1170. >     X509 *crl_issuer = NULL;
1171.       X509_NAME *cnm = X509_CRL_get_issuer(crl);
1172.       int cidx = ctx->error_depth;

crypto/x509/x509_vfy.c:1171:5: 
1169.   {
1170.       X509 *crl_issuer = NULL;
1171. >     X509_NAME *cnm = X509_CRL_get_issuer(crl);
1172.       int cidx = ctx->error_depth;
1173.       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:1172:5: 
1170.       X509 *crl_issuer = NULL;
1171.       X509_NAME *cnm = X509_CRL_get_issuer(crl);
1172. >     int cidx = ctx->error_depth;
1173.       int i;
1174.   

crypto/x509/x509_vfy.c:1175:9: 
1173.       int i;
1174.   
1175. >     if (cidx != sk_X509_num(ctx->chain) - 1)
1176.           cidx++;
1177.   

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:1175:9: Taking true branch
1173.       int i;
1174.   
1175.       if (cidx != sk_X509_num(ctx->chain) - 1)
                ^
1176.           cidx++;
1177.   

crypto/x509/x509_vfy.c:1176:9: 
1174.   
1175.       if (cidx != sk_X509_num(ctx->chain) - 1)
1176. >         cidx++;
1177.   
1178.       crl_issuer = sk_X509_value(ctx->chain, cidx);

crypto/x509/x509_vfy.c:1178:5: 
1176.           cidx++;
1177.   
1178. >     crl_issuer = sk_X509_value(ctx->chain, cidx);
1179.   
1180.       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:1180:9: 
1178.       crl_issuer = sk_X509_value(ctx->chain, cidx);
1179.   
1180. >     if (X509_check_akid(crl_issuer, crl->akid) == X509_V_OK) {
1181.           if (*pcrl_score & CRL_SCORE_ISSUER_NAME) {
1182.               *pcrl_score |= CRL_SCORE_AKID | CRL_SCORE_ISSUER_CERT;

crypto/x509v3/v3_purp.c:768:1: start of procedure X509_check_akid()
  766.   }
  767.   
  768. > int X509_check_akid(X509 *issuer, AUTHORITY_KEYID *akid)
  769.   {
  770.   

crypto/x509v3/v3_purp.c:771:10: Taking false branch
  769.   {
  770.   
  771.       if (!akid)
                  ^
  772.           return X509_V_OK;
  773.   

crypto/x509v3/v3_purp.c:775:9: Taking false branch
  773.   
  774.       /* Check key ids (if present) */
  775.       if (akid->keyid && issuer->skid &&
                 ^
  776.           ASN1_OCTET_STRING_cmp(akid->keyid, issuer->skid))
  777.           return X509_V_ERR_AKID_SKID_MISMATCH;

crypto/x509v3/v3_purp.c:779:9: Taking false branch
  777.           return X509_V_ERR_AKID_SKID_MISMATCH;
  778.       /* Check serial number */
  779.       if (akid->serial &&
                 ^
  780.           ASN1_INTEGER_cmp(X509_get_serialNumber(issuer), akid->serial))
  781.           return X509_V_ERR_AKID_ISSUER_SERIAL_MISMATCH;

crypto/x509v3/v3_purp.c:783:9: Taking false branch
  781.           return X509_V_ERR_AKID_ISSUER_SERIAL_MISMATCH;
  782.       /* Check issuer name */
  783.       if (akid->issuer) {
                 ^
  784.           /*
  785.            * Ugh, for some peculiar reason AKID includes SEQUENCE OF

crypto/x509v3/v3_purp.c:804:5: 
  802.               return X509_V_ERR_AKID_ISSUER_SERIAL_MISMATCH;
  803.       }
  804. >     return X509_V_OK;
  805.   }
  806.   

crypto/x509v3/v3_purp.c:805:1: return from a call to X509_check_akid
  803.       }
  804.       return X509_V_OK;
  805. > }
  806.   
  807.   uint32_t X509_get_extension_flags(X509 *x)

crypto/x509/x509_vfy.c:1180:9: Taking true branch
1178.       crl_issuer = sk_X509_value(ctx->chain, cidx);
1179.   
1180.       if (X509_check_akid(crl_issuer, crl->akid) == X509_V_OK) {
                ^
1181.           if (*pcrl_score & CRL_SCORE_ISSUER_NAME) {
1182.               *pcrl_score |= CRL_SCORE_AKID | CRL_SCORE_ISSUER_CERT;

crypto/x509/x509_vfy.c:1181:13: Taking false branch
1179.   
1180.       if (X509_check_akid(crl_issuer, crl->akid) == X509_V_OK) {
1181.           if (*pcrl_score & CRL_SCORE_ISSUER_NAME) {
                    ^
1182.               *pcrl_score |= CRL_SCORE_AKID | CRL_SCORE_ISSUER_CERT;
1183.               *pissuer = crl_issuer;

crypto/x509/x509_vfy.c:1188:10: 
1186.       }
1187.   
1188. >     for (cidx++; cidx < sk_X509_num(ctx->chain); cidx++) {
1189.           crl_issuer = sk_X509_value(ctx->chain, cidx);
1190.           if (X509_NAME_cmp(X509_get_subject_name(crl_issuer), cnm))

crypto/x509/x509_vfy.c:1188:18: 
1186.       }
1187.   
1188. >     for (cidx++; cidx < sk_X509_num(ctx->chain); cidx++) {
1189.           crl_issuer = sk_X509_value(ctx->chain, cidx);
1190.           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:1188:18: Loop condition is true. Entering loop body
1186.       }
1187.   
1188.       for (cidx++; cidx < sk_X509_num(ctx->chain); cidx++) {
                         ^
1189.           crl_issuer = sk_X509_value(ctx->chain, cidx);
1190.           if (X509_NAME_cmp(X509_get_subject_name(crl_issuer), cnm))

crypto/x509/x509_vfy.c:1189:9: 
1187.   
1188.       for (cidx++; cidx < sk_X509_num(ctx->chain); cidx++) {
1189. >         crl_issuer = sk_X509_value(ctx->chain, cidx);
1190.           if (X509_NAME_cmp(X509_get_subject_name(crl_issuer), cnm))
1191.               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:1190:13: 
1188.       for (cidx++; cidx < sk_X509_num(ctx->chain); cidx++) {
1189.           crl_issuer = sk_X509_value(ctx->chain, cidx);
1190. >         if (X509_NAME_cmp(X509_get_subject_name(crl_issuer), cnm))
1191.               continue;
1192.           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}']