ssl/t1_lib.c:4007: error: NULL_DEREFERENCE
  pointer `cpk` last assigned on line 4006 could be null and is dereferenced at line 4007, column 45.
Showing all 30 steps of the trace


ssl/t1_lib.c:3995:1: start of procedure ssl_get_auto_dh()
3993.   
3994.   #ifndef OPENSSL_NO_DH
3995. > DH *ssl_get_auto_dh(SSL *s)
3996.   {
3997.       int dh_secbits = 80;

ssl/t1_lib.c:3997:5: 
3995.   DH *ssl_get_auto_dh(SSL *s)
3996.   {
3997. >     int dh_secbits = 80;
3998.       if (s->cert->dh_tmp_auto == 2)
3999.           return DH_get_1024_160();

ssl/t1_lib.c:3998:9: Taking false branch
3996.   {
3997.       int dh_secbits = 80;
3998.       if (s->cert->dh_tmp_auto == 2)
                ^
3999.           return DH_get_1024_160();
4000.       if (s->s3->tmp.new_cipher->algorithm_auth & (SSL_aNULL | SSL_aPSK)) {

ssl/t1_lib.c:4000:9: Taking false branch
3998.       if (s->cert->dh_tmp_auto == 2)
3999.           return DH_get_1024_160();
4000.       if (s->s3->tmp.new_cipher->algorithm_auth & (SSL_aNULL | SSL_aPSK)) {
                ^
4001.           if (s->s3->tmp.new_cipher->strength_bits == 256)
4002.               dh_secbits = 128;

ssl/t1_lib.c:4006:9: 
4004.               dh_secbits = 80;
4005.       } else {
4006. >         CERT_PKEY *cpk = ssl_get_server_send_pkey(s);
4007.           dh_secbits = EVP_PKEY_security_bits(cpk->privatekey);
4008.       }

ssl/ssl_lib.c:2772:1: start of procedure ssl_get_server_send_pkey()
  2770.   }
  2771.   
  2772. > CERT_PKEY *ssl_get_server_send_pkey(SSL *s)
  2773.   {
  2774.       CERT *c;

ssl/ssl_lib.c:2777:5: 
  2775.       int i;
  2776.   
  2777. >     c = s->cert;
  2778.       if (!s->s3 || !s->s3->tmp.new_cipher)
  2779.           return NULL;

ssl/ssl_lib.c:2778:10: Taking false branch
  2776.   
  2777.       c = s->cert;
  2778.       if (!s->s3 || !s->s3->tmp.new_cipher)
                   ^
  2779.           return NULL;
  2780.       ssl_set_masks(s);

ssl/ssl_lib.c:2778:20: Taking false branch
  2776.   
  2777.       c = s->cert;
  2778.       if (!s->s3 || !s->s3->tmp.new_cipher)
                             ^
  2779.           return NULL;
  2780.       ssl_set_masks(s);

ssl/ssl_lib.c:2780:5: Skipping ssl_set_masks(): empty list of specs
  2778.       if (!s->s3 || !s->s3->tmp.new_cipher)
  2779.           return NULL;
  2780.       ssl_set_masks(s);
              ^
  2781.   
  2782.       i = ssl_get_server_cert_index(s);

ssl/ssl_lib.c:2782:5: 
  2780.       ssl_set_masks(s);
  2781.   
  2782. >     i = ssl_get_server_cert_index(s);
  2783.   
  2784.       /* This may or may not be an error. */

ssl/ssl_lib.c:2751:1: start of procedure ssl_get_server_cert_index()
    2749.   #endif
    2750.   
    2751. > static int ssl_get_server_cert_index(const SSL *s)
    2752.   {
    2753.       int idx;

ssl/ssl_lib.c:2754:5: 
    2752.   {
    2753.       int idx;
    2754. >     idx = ssl_cipher_get_cert_index(s->s3->tmp.new_cipher);
    2755.       if (idx == SSL_PKEY_RSA_ENC && !s->cert->pkeys[SSL_PKEY_RSA_ENC].x509)
    2756.           idx = SSL_PKEY_RSA_SIGN;

ssl/ssl_ciph.c:1872:1: start of procedure ssl_cipher_get_cert_index()
      1870.   
      1871.   /* For a cipher return the index corresponding to the certificate type */
      1872. > int ssl_cipher_get_cert_index(const SSL_CIPHER *c)
      1873.   {
      1874.       uint32_t alg_a;

ssl/ssl_ciph.c:1876:5: 
      1874.       uint32_t alg_a;
      1875.   
      1876. >     alg_a = c->algorithm_auth;
      1877.   
      1878.       if (alg_a & SSL_aECDSA)

ssl/ssl_ciph.c:1878:9: Taking false branch
      1876.       alg_a = c->algorithm_auth;
      1877.   
      1878.       if (alg_a & SSL_aECDSA)
                      ^
      1879.           return SSL_PKEY_ECC;
      1880.       else if (alg_a & SSL_aDSS)

ssl/ssl_ciph.c:1880:14: Taking false branch
      1878.       if (alg_a & SSL_aECDSA)
      1879.           return SSL_PKEY_ECC;
      1880.       else if (alg_a & SSL_aDSS)
                           ^
      1881.           return SSL_PKEY_DSA_SIGN;
      1882.       else if (alg_a & SSL_aRSA)

ssl/ssl_ciph.c:1882:14: Taking true branch
      1880.       else if (alg_a & SSL_aDSS)
      1881.           return SSL_PKEY_DSA_SIGN;
      1882.       else if (alg_a & SSL_aRSA)
                           ^
      1883.           return SSL_PKEY_RSA_ENC;
      1884.       else if (alg_a & SSL_aGOST12)

ssl/ssl_ciph.c:1883:9: 
      1881.           return SSL_PKEY_DSA_SIGN;
      1882.       else if (alg_a & SSL_aRSA)
      1883. >         return SSL_PKEY_RSA_ENC;
      1884.       else if (alg_a & SSL_aGOST12)
      1885.           return SSL_PKEY_GOST_EC;

ssl/ssl_ciph.c:1890:1: return from a call to ssl_cipher_get_cert_index
      1888.   
      1889.       return -1;
      1890. > }
      1891.   
      1892.   const SSL_CIPHER *ssl_get_cipher_by_char(SSL *ssl, const unsigned char *ptr)

ssl/ssl_lib.c:2755:9: Taking true branch
    2753.       int idx;
    2754.       idx = ssl_cipher_get_cert_index(s->s3->tmp.new_cipher);
    2755.       if (idx == SSL_PKEY_RSA_ENC && !s->cert->pkeys[SSL_PKEY_RSA_ENC].x509)
                    ^
    2756.           idx = SSL_PKEY_RSA_SIGN;
    2757.       if (idx == SSL_PKEY_GOST_EC) {

ssl/ssl_lib.c:2755:37: Taking false branch
    2753.       int idx;
    2754.       idx = ssl_cipher_get_cert_index(s->s3->tmp.new_cipher);
    2755.       if (idx == SSL_PKEY_RSA_ENC && !s->cert->pkeys[SSL_PKEY_RSA_ENC].x509)
                                                ^
    2756.           idx = SSL_PKEY_RSA_SIGN;
    2757.       if (idx == SSL_PKEY_GOST_EC) {

ssl/ssl_lib.c:2757:9: Taking false branch
    2755.       if (idx == SSL_PKEY_RSA_ENC && !s->cert->pkeys[SSL_PKEY_RSA_ENC].x509)
    2756.           idx = SSL_PKEY_RSA_SIGN;
    2757.       if (idx == SSL_PKEY_GOST_EC) {
                    ^
    2758.           if (s->cert->pkeys[SSL_PKEY_GOST12_512].x509)
    2759.               idx = SSL_PKEY_GOST12_512;

ssl/ssl_lib.c:2767:9: Taking false branch
    2765.               idx = -1;
    2766.       }
    2767.       if (idx == -1)
                    ^
    2768.           SSLerr(SSL_F_SSL_GET_SERVER_CERT_INDEX, ERR_R_INTERNAL_ERROR);
    2769.       return idx;

ssl/ssl_lib.c:2769:5: 
    2767.       if (idx == -1)
    2768.           SSLerr(SSL_F_SSL_GET_SERVER_CERT_INDEX, ERR_R_INTERNAL_ERROR);
    2769. >     return idx;
    2770.   }
    2771.   

ssl/ssl_lib.c:2770:1: return from a call to ssl_get_server_cert_index
    2768.           SSLerr(SSL_F_SSL_GET_SERVER_CERT_INDEX, ERR_R_INTERNAL_ERROR);
    2769.       return idx;
    2770. > }
    2771.   
    2772.   CERT_PKEY *ssl_get_server_send_pkey(SSL *s)

ssl/ssl_lib.c:2785:9: Taking true branch
  2783.   
  2784.       /* This may or may not be an error. */
  2785.       if (i < 0)
                  ^
  2786.           return NULL;
  2787.   

ssl/ssl_lib.c:2786:9: 
  2784.       /* This may or may not be an error. */
  2785.       if (i < 0)
  2786. >         return NULL;
  2787.   
  2788.       /* May be NULL. */

ssl/ssl_lib.c:2790:1: return from a call to ssl_get_server_send_pkey
  2788.       /* May be NULL. */
  2789.       return &c->pkeys[i];
  2790. > }
  2791.   
  2792.   EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher,

ssl/t1_lib.c:4007:9: 
4005.       } else {
4006.           CERT_PKEY *cpk = ssl_get_server_send_pkey(s);
4007. >         dh_secbits = EVP_PKEY_security_bits(cpk->privatekey);
4008.       }
4009.   

DH *ssl_get_auto_dh(SSL *s)
{
    int dh_secbits = 80;
    if (s->cert->dh_tmp_auto == 2)
        return DH_get_1024_160();
    if (s->s3->tmp.new_cipher->algorithm_auth & (SSL_aNULL | SSL_aPSK)) {
        if (s->s3->tmp.new_cipher->strength_bits == 256)
            dh_secbits = 128;
        else
            dh_secbits = 80;
    } else {
        CERT_PKEY *cpk = ssl_get_server_send_pkey(s);
        dh_secbits = EVP_PKEY_security_bits(cpk->privatekey);
    }
    if (dh_secbits >= 128) {
        DH *dhp = DH_new();
        BIGNUM *p, *g;
        if (dhp == NULL)
            return NULL;
        g = BN_new();
        if (g != NULL)
            BN_set_word(g, 2);
        if (dh_secbits >= 192)
            p = BN_get_rfc3526_prime_8192(NULL);
        else
            p = BN_get_rfc3526_prime_3072(NULL);
        if (p == NULL || g == NULL || !DH_set0_pqg(dhp, p, NULL, g)) {
            DH_free(dhp);
            BN_free(p);
            BN_free(g);
            return NULL;
        }
        return dhp;
    }
    if (dh_secbits >= 112)
        return DH_get_2048_224();
    return DH_get_1024_160();
}
['DH *ssl_get_auto_dh(SSL *s)\n{\n    int dh_secbits = 80;\n    if (s->cert->dh_tmp_auto == 2)\n        return DH_get_1024_160();\n    if (s->s3->tmp.new_cipher->algorithm_auth & (SSL_aNULL | SSL_aPSK)) {\n        if (s->s3->tmp.new_cipher->strength_bits == 256)\n            dh_secbits = 128;\n        else\n            dh_secbits = 80;\n    } else {\n        CERT_PKEY *cpk = ssl_get_server_send_pkey(s);\n        dh_secbits = EVP_PKEY_security_bits(cpk->privatekey);\n    }\n    if (dh_secbits >= 128) {\n        DH *dhp = DH_new();\n        BIGNUM *p, *g;\n        if (dhp == NULL)\n            return NULL;\n        g = BN_new();\n        if (g != NULL)\n            BN_set_word(g, 2);\n        if (dh_secbits >= 192)\n            p = BN_get_rfc3526_prime_8192(NULL);\n        else\n            p = BN_get_rfc3526_prime_3072(NULL);\n        if (p == NULL || g == NULL || !DH_set0_pqg(dhp, p, NULL, g)) {\n            DH_free(dhp);\n            BN_free(p);\n            BN_free(g);\n            return NULL;\n        }\n        return dhp;\n    }\n    if (dh_secbits >= 112)\n        return DH_get_2048_224();\n    return DH_get_1024_160();\n}', 'CERT_PKEY *ssl_get_server_send_pkey(SSL *s)\n{\n    CERT *c;\n    int i;\n    c = s->cert;\n    if (!s->s3 || !s->s3->tmp.new_cipher)\n        return NULL;\n    ssl_set_masks(s);\n    i = ssl_get_server_cert_index(s);\n    if (i < 0)\n        return NULL;\n    return &c->pkeys[i];\n}', 'static int ssl_get_server_cert_index(const SSL *s)\n{\n    int idx;\n    idx = ssl_cipher_get_cert_index(s->s3->tmp.new_cipher);\n    if (idx == SSL_PKEY_RSA_ENC && !s->cert->pkeys[SSL_PKEY_RSA_ENC].x509)\n        idx = SSL_PKEY_RSA_SIGN;\n    if (idx == SSL_PKEY_GOST_EC) {\n        if (s->cert->pkeys[SSL_PKEY_GOST12_512].x509)\n            idx = SSL_PKEY_GOST12_512;\n        else if (s->cert->pkeys[SSL_PKEY_GOST12_256].x509)\n            idx = SSL_PKEY_GOST12_256;\n        else if (s->cert->pkeys[SSL_PKEY_GOST01].x509)\n            idx = SSL_PKEY_GOST01;\n        else\n            idx = -1;\n    }\n    if (idx == -1)\n        SSLerr(SSL_F_SSL_GET_SERVER_CERT_INDEX, ERR_R_INTERNAL_ERROR);\n    return idx;\n}', 'int ssl_cipher_get_cert_index(const SSL_CIPHER *c)\n{\n    uint32_t alg_a;\n    alg_a = c->algorithm_auth;\n    if (alg_a & SSL_aECDSA)\n        return SSL_PKEY_ECC;\n    else if (alg_a & SSL_aDSS)\n        return SSL_PKEY_DSA_SIGN;\n    else if (alg_a & SSL_aRSA)\n        return SSL_PKEY_RSA_ENC;\n    else if (alg_a & SSL_aGOST12)\n        return SSL_PKEY_GOST_EC;\n    else if (alg_a & SSL_aGOST01)\n        return SSL_PKEY_GOST01;\n    return -1;\n}']