crypto/dsa/dsa_ossl.c:163: error: BUFFER_OVERRUN_L3
  Offset: [1, +oo] Size: [0, 8388607] by call to `BN_generate_dsa_nonce`.
Showing all 20 steps of the trace


crypto/dsa/dsa_ossl.c:133:1: Parameter `dsa->q->top`
131.   }
132.   
133. > static int dsa_sign_setup(DSA *dsa, BN_CTX *ctx_in,
134.                             BIGNUM **kinvp, BIGNUM **rp,
135.                             const unsigned char *dgst, int dlen)

crypto/dsa/dsa_ossl.c:163:18: Call
161.                * This protects the private key from a weak PRNG.
162.                */
163.               if (!BN_generate_dsa_nonce(k, dsa->q, dsa->priv_key, dgst,
                        ^
164.                                          dlen, ctx))
165.                   goto err;

crypto/bn/bn_rand.c:195:1: Parameter `range->top`
  193.    * used.
  194.    */
  195. > int BN_generate_dsa_nonce(BIGNUM *out, const BIGNUM *range,
  196.                             const BIGNUM *priv, const unsigned char *message,
  197.                             size_t message_len, BN_CTX *ctx)

crypto/bn/bn_rand.c:208:34: Call
  206.       unsigned done, todo;
  207.       /* We generate |range|+8 bytes of random output. */
  208.       const unsigned num_k_bytes = BN_num_bytes(range) + 8;
                                          ^
  209.       unsigned char private_bytes[96];
  210.       unsigned char *k_bytes;

crypto/bn/bn_lib.c:166:9: Call
    164.       bn_check_top(a);
    165.   
    166.       if (BN_is_zero(a))
                   ^
    167.           return 0;
    168.       return ((i * BN_BITS2) + BN_num_bits_word(a->d[i]));

crypto/bn/bn_lib.c:920:1: Parameter `a->top`
      918.   }
      919.   
      920. > int BN_is_zero(const BIGNUM *a)
      921.   {
      922.       return a->top == 0;

crypto/bn/bn_rand.c:250:9: Call
  248.       if (!BN_bin2bn(k_bytes, num_k_bytes, out))
  249.           goto err;
  250.       if (BN_mod(out, out, range, ctx) != 1)
                 ^
  251.           goto err;
  252.       ret = 1;

crypto/bn/bn_div.c:205:31: Call
    203.   
    204.       /* First we normalise the numbers */
    205.       norm_shift = BN_BITS2 - ((BN_num_bits(divisor)) % BN_BITS2);
                                         ^
    206.       if (!(BN_lshift(sdiv, divisor, norm_shift)))
    207.           goto err;

crypto/bn/bn_lib.c:167:9: Assignment
      165.   
      166.       if (BN_is_zero(a))
      167.           return 0;
                     ^
      168.       return ((i * BN_BITS2) + BN_num_bits_word(a->d[i]));
      169.   }

crypto/bn/bn_div.c:205:5: Assignment
    203.   
    204.       /* First we normalise the numbers */
    205.       norm_shift = BN_BITS2 - ((BN_num_bits(divisor)) % BN_BITS2);
               ^
    206.       if (!(BN_lshift(sdiv, divisor, norm_shift)))
    207.           goto err;

crypto/bn/bn_div.c:206:11: Call
    204.       /* First we normalise the numbers */
    205.       norm_shift = BN_BITS2 - ((BN_num_bits(divisor)) % BN_BITS2);
    206.       if (!(BN_lshift(sdiv, divisor, norm_shift)))
                     ^
    207.           goto err;
    208.       sdiv->neg = 0;

crypto/bn/bn_shift.c:81:1: <Offset trace>
79.   }
80.   
81. > int BN_lshift(BIGNUM *r, const BIGNUM *a, int n)
82.   {
83.       int i, nw, lb, rb;

crypto/bn/bn_shift.c:81:1: Parameter `n`
      79.   }
      80.   
      81. > int BN_lshift(BIGNUM *r, const BIGNUM *a, int n)
      82.   {
      83.       int i, nw, lb, rb;

crypto/bn/bn_shift.c:95:5: Assignment
      93.       }
      94.   
      95.       nw = n / BN_BITS2;
                ^
      96.       if (bn_wexpand(r, a->top + nw + 1) == NULL)
      97.           return (0);

crypto/bn/bn_shift.c:81:1: <Length trace>
79.   }
80.   
81. > int BN_lshift(BIGNUM *r, const BIGNUM *a, int n)
82.   {
83.       int i, nw, lb, rb;

crypto/bn/bn_shift.c:81:1: Parameter `*r->d`
      79.   }
      80.   
      81. > int BN_lshift(BIGNUM *r, const BIGNUM *a, int n)
      82.   {
      83.       int i, nw, lb, rb;

crypto/bn/bn_shift.c:96:9: Call
      94.   
      95.       nw = n / BN_BITS2;
      96.       if (bn_wexpand(r, a->top + nw + 1) == NULL)
                    ^
      97.           return (0);
      98.       r->neg = a->neg;

crypto/bn/bn_lib.c:1016:1: Parameter `*a->d`
        1014.   }
        1015.   
        1016. > BIGNUM *bn_wexpand(BIGNUM *a, int words)
        1017.   {
        1018.       return (words <= a->dmax) ? a : bn_expand2(a, words);

crypto/bn/bn_shift.c:102:5: Assignment
      100.       rb = BN_BITS2 - lb;
      101.       f = a->d;
      102.       t = r->d;
                 ^
      103.       t[a->top + nw] = 0;
      104.       if (lb == 0)

crypto/bn/bn_shift.c:110:13: Array access: Offset: [1, +oo] Size: [0, 8388607] by call to `BN_generate_dsa_nonce` 
      108.           for (i = a->top - 1; i >= 0; i--) {
      109.               l = f[i];
      110.               t[nw + i + 1] |= (l >> rb) & BN_MASK2;
                         ^
      111.               t[nw + i] = (l << lb) & BN_MASK2;
      112.           }
