crypto/dh/dh_check.c:100: error: BUFFER_OVERRUN_L3
  Offset added: [8, +oo] Size: [0, 67108856] by call to `BN_div`.
Showing all 24 steps of the trace


crypto/dh/dh_check.c:89:18: Call
87.           else {
88.               /* Check g^q == 1 mod p */
89.               if (!BN_mod_exp(t1, dh->g, dh->q, dh->p, ctx))
                       ^
90.                   goto err;
91.               if (!BN_is_one(t1))

crypto/bn/bn_exp.c:141:19: Call
  139.               && (BN_get_flags(m, BN_FLG_CONSTTIME) == 0)) {
  140.               BN_ULONG A = a->d[0];
  141.               ret = BN_mod_exp_mont_word(r, A, p, m, ctx, NULL);
                           ^
  142.           } else
  143.   # endif

crypto/bn/bn_exp.c:1095:1: Parameter `rr->top`
    1093.   }
    1094.   
    1095. > int BN_mod_exp_mont_word(BIGNUM *rr, BN_ULONG a, const BIGNUM *p,
    1096.                            const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *in_mont)
    1097.   {

crypto/dh/dh_check.c:100:14: Call
98.               *ret |= DH_CHECK_Q_NOT_PRIME;
99.           /* Check p == 1 mod q  i.e. q divides p - 1 */
100.           if (!BN_div(t1, t2, dh->p, dh->q, ctx))
                    ^
101.               goto err;
102.           if (!BN_is_one(t2))

crypto/bn/bn_div.c:137:1: Parameter `rm->top`
  135.    * If 'dv' or 'rm' is NULL, the respective value is not returned.
  136.    */
  137. > int BN_div(BIGNUM *dv, BIGNUM *rm, const BIGNUM *num, const BIGNUM *divisor,
  138.              BN_CTX *ctx)
  139.   {

crypto/bn/bn_div.c:182:17: Call
  180.       if (!no_branch && BN_ucmp(num, divisor) < 0) {
  181.           if (rm != NULL) {
  182.               if (BN_copy(rm, num) == NULL)
                         ^
  183.                   return 0;
  184.           }

crypto/bn/bn_lib.c:312:1: Parameter `a->top`
    310.   }
    311.   
    312. > BIGNUM *BN_copy(BIGNUM *a, const BIGNUM *b)
    313.   {
    314.       bn_check_top(b);

crypto/bn/bn_lib.c:318:9: Call
    316.       if (a == b)
    317.           return a;
    318.       if (bn_wexpand(a, b->top) == NULL)
                   ^
    319.           return NULL;
    320.   

crypto/bn/bn_lib.c:940:1: Parameter `a->top`
      938.   }
      939.   
      940. > BIGNUM *bn_wexpand(BIGNUM *a, int words)
      941.   {
      942.       return (words <= a->dmax) ? a : bn_expand2(a, words);

crypto/bn/bn_lib.c:942:37: Call
      940.   BIGNUM *bn_wexpand(BIGNUM *a, int words)
      941.   {
      942.       return (words <= a->dmax) ? a : bn_expand2(a, words);
                                                 ^
      943.   }
      944.   

crypto/bn/bn_lib.c:273:1: Parameter `b->top`
        271.    */
        272.   
        273. > BIGNUM *bn_expand2(BIGNUM *b, int words)
        274.   {
        275.       bn_check_top(b);

crypto/bn/bn_lib.c:278:23: Call
        276.   
        277.       if (words > b->dmax) {
        278.           BN_ULONG *a = bn_expand_internal(b, words);
                                     ^
        279.           if (!a)
        280.               return NULL;

crypto/bn/bn_lib.c:235:1: <Offset trace>
233.   /* This is used by bn_expand2() */
234.   /* The caller MUST check that words > b->dmax before calling this */
235. > static BN_ULONG *bn_expand_internal(const BIGNUM *b, int words)
236.   {
237.       BN_ULONG *a = NULL;

crypto/bn/bn_lib.c:235:1: Parameter `b->top`
          233.   /* This is used by bn_expand2() */
          234.   /* The caller MUST check that words > b->dmax before calling this */
          235. > static BN_ULONG *bn_expand_internal(const BIGNUM *b, int words)
          236.   {
          237.       BN_ULONG *a = NULL;

crypto/bn/bn_lib.c:235:1: <Length trace>
233.   /* This is used by bn_expand2() */
234.   /* The caller MUST check that words > b->dmax before calling this */
235. > static BN_ULONG *bn_expand_internal(const BIGNUM *b, int words)
236.   {
237.       BN_ULONG *a = NULL;

crypto/bn/bn_lib.c:235:1: Parameter `words`
          233.   /* This is used by bn_expand2() */
          234.   /* The caller MUST check that words > b->dmax before calling this */
          235. > static BN_ULONG *bn_expand_internal(const BIGNUM *b, int words)
          236.   {
          237.       BN_ULONG *a = NULL;

crypto/bn/bn_lib.c:252:13: Call
          250.           a = OPENSSL_secure_zalloc(words * sizeof(*a));
          251.       else
          252.           a = OPENSSL_zalloc(words * sizeof(*a));
                             ^
          253.       if (a == NULL) {
          254.           BNerr(BN_F_BN_EXPAND_INTERNAL, ERR_R_MALLOC_FAILURE);

crypto/mem.c:218:1: Parameter `num`
            216.   }
            217.   
            218. > void *CRYPTO_zalloc(size_t num, const char *file, int line)
            219.   {
            220.       void *ret = CRYPTO_malloc(num, file, line);

crypto/mem.c:220:17: Call
            218.   void *CRYPTO_zalloc(size_t num, const char *file, int line)
            219.   {
            220.       void *ret = CRYPTO_malloc(num, file, line);
                                   ^
            221.   
            222.       FAILTEST();

crypto/mem.c:198:9: Assignment
              196.   
              197.       if (num == 0)
              198.           return NULL;
                             ^
              199.   
              200.       FAILTEST();

crypto/mem.c:220:5: Assignment
            218.   void *CRYPTO_zalloc(size_t num, const char *file, int line)
            219.   {
            220.       void *ret = CRYPTO_malloc(num, file, line);
                       ^
            221.   
            222.       FAILTEST();

crypto/mem.c:225:5: Assignment
            223.       if (ret != NULL)
            224.           memset(ret, 0, num);
            225.       return ret;
                       ^
            226.   }
            227.   

crypto/bn/bn_lib.c:252:9: Assignment
          250.           a = OPENSSL_secure_zalloc(words * sizeof(*a));
          251.       else
          252.           a = OPENSSL_zalloc(words * sizeof(*a));
                         ^
          253.       if (a == NULL) {
          254.           BNerr(BN_F_BN_EXPAND_INTERNAL, ERR_R_MALLOC_FAILURE);

crypto/bn/bn_lib.c:260:9: Array access: Offset added: [8, +oo] Size: [0, 67108856] by call to `BN_div` 
          258.       assert(b->top <= words);
          259.       if (b->top > 0)
          260.           memcpy(a, b->d, sizeof(*a) * b->top);
                         ^
          261.   
          262.       return a;
