crypto/dh/dh_check.c:170: error: BUFFER_OVERRUN_L3
  Offset: 0 Size: [0, 8388607] by call to `BN_mod_exp`.
Showing all 15 steps of the trace


crypto/dh/dh_check.c:158:11: Call
156.           goto err;
157.       BN_CTX_start(ctx);
158.       tmp = BN_CTX_get(ctx);
                 ^
159.       if (tmp == NULL || !BN_set_word(tmp, 1))
160.           goto err;

crypto/bn/bn_ctx.c:229:5: Call
  227.       }
  228.       /* OK, make sure the returned bignum is "zero" */
  229.       BN_zero(ret);
             ^
  230.       ctx->used++;
  231.       CTXDBG_RET(ctx, ret);

crypto/bn/bn_lib.c:393:1: Parameter `*a->d`
    391.   }
    392.   
    393. > int BN_set_word(BIGNUM *a, BN_ULONG w)
    394.   {
    395.       bn_check_top(a);

crypto/bn/bn_lib.c:396:9: Call
    394.   {
    395.       bn_check_top(a);
    396.       if (bn_expand(a, (int)sizeof(BN_ULONG) * 8) == NULL)
                   ^
    397.           return (0);
    398.       a->neg = 0;

crypto/bn/bn_lcl.h:660:1: Parameter `*a->d`
      658.                            const BIGNUM *add, const BIGNUM *rem, BN_CTX *ctx);
      659.   
      660. > static ossl_inline BIGNUM *bn_expand(BIGNUM *a, int bits)
      661.   {
      662.       if (bits > (INT_MAX - BN_BITS2 + 1))

crypto/dh/dh_check.c:170:14: Call
168.       if (dh->q != NULL) {
169.           /* Check pub_key^q == 1 mod p */
170.           if (!BN_mod_exp(tmp, pub_key, dh->q, dh->p, ctx))
                    ^
171.               goto err;
172.           if (!BN_is_one(tmp))

crypto/bn/bn_exp.c:91:1: Parameter `*r->d`
  89.   }
  90.   
  91. > int BN_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, const BIGNUM *m,
  92.                  BN_CTX *ctx)
  93.   {

crypto/bn/bn_exp.c:141:19: Call
  139.               && (BN_get_flags(p, 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:1091:1: Parameter `*rr->d`
    1089.   }
    1090.   
    1091. > int BN_mod_exp_mont_word(BIGNUM *rr, BN_ULONG a, const BIGNUM *p,
    1092.                            const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *in_mont)
    1093.   {

crypto/bn/bn_exp.c:1138:13: Call
    1136.           if (BN_is_one(m)) {
    1137.               ret = 1;
    1138.               BN_zero(rr);
                        ^
    1139.           } else {
    1140.               ret = BN_one(rr);

crypto/bn/bn_lib.c:393:1: <Length trace>
391.   }
392.   
393. > int BN_set_word(BIGNUM *a, BN_ULONG w)
394.   {
395.       bn_check_top(a);

crypto/bn/bn_lib.c:393:1: Parameter `*a->d`
      391.   }
      392.   
      393. > int BN_set_word(BIGNUM *a, BN_ULONG w)
      394.   {
      395.       bn_check_top(a);

crypto/bn/bn_lib.c:396:9: Call
      394.   {
      395.       bn_check_top(a);
      396.       if (bn_expand(a, (int)sizeof(BN_ULONG) * 8) == NULL)
                     ^
      397.           return (0);
      398.       a->neg = 0;

crypto/bn/bn_lcl.h:660:1: Parameter `*a->d`
        658.                            const BIGNUM *add, const BIGNUM *rem, BN_CTX *ctx);
        659.   
        660. > static ossl_inline BIGNUM *bn_expand(BIGNUM *a, int bits)
        661.   {
        662.       if (bits > (INT_MAX - BN_BITS2 + 1))

crypto/bn/bn_lib.c:399:5: Array access: Offset: 0 Size: [0, 8388607] by call to `BN_mod_exp` 
      397.           return (0);
      398.       a->neg = 0;
      399.       a->d[0] = w;
                 ^
      400.       a->top = (w ? 1 : 0);
      401.       bn_check_top(a);
