crypto/x509/x509_vfy.c:1099: error: NULL_DEREFERENCE
  pointer `crl_issuer` last assigned on line 1098 could be null and is dereferenced by call to `X509_get_subject_name()` at line 1099, column 27.
Showing all 52 steps of the trace


crypto/x509/x509_vfy.c:1076:1: start of procedure crl_akid_check()
1074.   }
1075.   
1076. > static void crl_akid_check(X509_STORE_CTX *ctx, X509_CRL *crl,
1077.                              X509 **pissuer, int *pcrl_score)
1078.   {

crypto/x509/x509_vfy.c:1079:5: 
1077.                              X509 **pissuer, int *pcrl_score)
1078.   {
1079. >     X509 *crl_issuer = NULL;
1080.       X509_NAME *cnm = X509_CRL_get_issuer(crl);
1081.       int cidx = ctx->error_depth;

crypto/x509/x509_vfy.c:1080:5: 
1078.   {
1079.       X509 *crl_issuer = NULL;
1080. >     X509_NAME *cnm = X509_CRL_get_issuer(crl);
1081.       int cidx = ctx->error_depth;
1082.       int i;

crypto/x509/x509cset.c:155:1: start of procedure X509_CRL_get_issuer()
  153.   }
  154.   
  155. > X509_NAME *X509_CRL_get_issuer(X509_CRL *crl)
  156.   {
  157.       return crl->crl.issuer;

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

crypto/x509/x509cset.c:158:1: return from a call to X509_CRL_get_issuer
  156.   {
  157.       return crl->crl.issuer;
  158. > }
  159.   
  160.   STACK_OF(X509_EXTENSION) *X509_CRL_get0_extensions(X509_CRL *crl)

crypto/x509/x509_vfy.c:1081:5: 
1079.       X509 *crl_issuer = NULL;
1080.       X509_NAME *cnm = X509_CRL_get_issuer(crl);
1081. >     int cidx = ctx->error_depth;
1082.       int i;
1083.   

crypto/x509/x509_vfy.c:1084:9: 
1082.       int i;
1083.   
1084. >     if (cidx != sk_X509_num(ctx->chain) - 1)
1085.           cidx++;
1086.   

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

crypto/stack/stack.c:316:1: start of procedure sk_num()
    314.   }
    315.   
    316. > int sk_num(const _STACK *st)
    317.   {
    318.       if (st == NULL)

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

crypto/stack/stack.c:319:9: 
    317.   {
    318.       if (st == NULL)
    319. >         return -1;
    320.       return st->num;
    321.   }

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

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

crypto/x509/x509_vfy.c:1084:9: Taking true branch
1082.       int i;
1083.   
1084.       if (cidx != sk_X509_num(ctx->chain) - 1)
                ^
1085.           cidx++;
1086.   

crypto/x509/x509_vfy.c:1085:9: 
1083.   
1084.       if (cidx != sk_X509_num(ctx->chain) - 1)
1085. >         cidx++;
1086.   
1087.       crl_issuer = sk_X509_value(ctx->chain, cidx);

crypto/x509/x509_vfy.c:1087:5: 
1085.           cidx++;
1086.   
1087. >     crl_issuer = sk_X509_value(ctx->chain, cidx);
1088.   
1089.       if (X509_check_akid(crl_issuer, crl->akid) == X509_V_OK) {

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

crypto/stack/stack.c:323:1: start of procedure sk_value()
    321.   }
    322.   
    323. > void *sk_value(const _STACK *st, int i)
    324.   {
    325.       if (!st || (i < 0) || (i >= st->num))

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

crypto/stack/stack.c:326:9: 
    324.   {
    325.       if (!st || (i < 0) || (i >= st->num))
    326. >         return NULL;
    327.       return st->data[i];
    328.   }

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

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

crypto/x509/x509_vfy.c:1089:9: 
1087.       crl_issuer = sk_X509_value(ctx->chain, cidx);
1088.   
1089. >     if (X509_check_akid(crl_issuer, crl->akid) == X509_V_OK) {
1090.           if (*pcrl_score & CRL_SCORE_ISSUER_NAME) {
1091.               *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:1089:9: Taking true branch
1087.       crl_issuer = sk_X509_value(ctx->chain, cidx);
1088.   
1089.       if (X509_check_akid(crl_issuer, crl->akid) == X509_V_OK) {
                ^
1090.           if (*pcrl_score & CRL_SCORE_ISSUER_NAME) {
1091.               *pcrl_score |= CRL_SCORE_AKID | CRL_SCORE_ISSUER_CERT;

crypto/x509/x509_vfy.c:1090:13: Taking false branch
1088.   
1089.       if (X509_check_akid(crl_issuer, crl->akid) == X509_V_OK) {
1090.           if (*pcrl_score & CRL_SCORE_ISSUER_NAME) {
                    ^
1091.               *pcrl_score |= CRL_SCORE_AKID | CRL_SCORE_ISSUER_CERT;
1092.               *pissuer = crl_issuer;

crypto/x509/x509_vfy.c:1097:10: 
1095.       }
1096.   
1097. >     for (cidx++; cidx < sk_X509_num(ctx->chain); cidx++) {
1098.           crl_issuer = sk_X509_value(ctx->chain, cidx);
1099.           if (X509_NAME_cmp(X509_get_subject_name(crl_issuer), cnm))

crypto/x509/x509_vfy.c:1097:18: 
1095.       }
1096.   
1097. >     for (cidx++; cidx < sk_X509_num(ctx->chain); cidx++) {
1098.           crl_issuer = sk_X509_value(ctx->chain, cidx);
1099.           if (X509_NAME_cmp(X509_get_subject_name(crl_issuer), cnm))

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

crypto/stack/stack.c:316:1: start of procedure sk_num()
    314.   }
    315.   
    316. > int sk_num(const _STACK *st)
    317.   {
    318.       if (st == NULL)

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

crypto/stack/stack.c:319:9: 
    317.   {
    318.       if (st == NULL)
    319. >         return -1;
    320.       return st->num;
    321.   }

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

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

crypto/x509/x509_vfy.c:1097:18: Loop condition is true. Entering loop body
1095.       }
1096.   
1097.       for (cidx++; cidx < sk_X509_num(ctx->chain); cidx++) {
                         ^
1098.           crl_issuer = sk_X509_value(ctx->chain, cidx);
1099.           if (X509_NAME_cmp(X509_get_subject_name(crl_issuer), cnm))

crypto/x509/x509_vfy.c:1098:9: 
1096.   
1097.       for (cidx++; cidx < sk_X509_num(ctx->chain); cidx++) {
1098. >         crl_issuer = sk_X509_value(ctx->chain, cidx);
1099.           if (X509_NAME_cmp(X509_get_subject_name(crl_issuer), cnm))
1100.               continue;

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

crypto/stack/stack.c:323:1: start of procedure sk_value()
    321.   }
    322.   
    323. > void *sk_value(const _STACK *st, int i)
    324.   {
    325.       if (!st || (i < 0) || (i >= st->num))

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

crypto/stack/stack.c:326:9: 
    324.   {
    325.       if (!st || (i < 0) || (i >= st->num))
    326. >         return NULL;
    327.       return st->data[i];
    328.   }

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

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

crypto/x509/x509_vfy.c:1099:13: 
1097.       for (cidx++; cidx < sk_X509_num(ctx->chain); cidx++) {
1098.           crl_issuer = sk_X509_value(ctx->chain, cidx);
1099. >         if (X509_NAME_cmp(X509_get_subject_name(crl_issuer), cnm))
1100.               continue;
1101.           if (X509_check_akid(crl_issuer, crl->akid) == X509_V_OK) {

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

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

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}', '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}']