test/bntest.c:1924: error: BUFFER_OVERRUN_L3
  Offset added: [8, +oo] Size: [0, 536870848] by call to `BN_mod_exp`.
Showing all 19 steps of the trace


test/bntest.c:1922:5: Call
1920.               || !TEST_ptr(r = BN_new()))
1921.           goto err;
1922.       BN_zero(zero);
            ^
1923.   
1924.       if (!TEST_true(BN_mod_exp(r, a, zero, BN_value_one(), NULL))

crypto/bn/bn_lib.c:402:15: Assignment
  400.       a->neg = 0;
  401.       a->d[0] = w;
  402.       a->top = (w ? 1 : 0);
                       ^
  403.       bn_check_top(a);
  404.       return (1);

crypto/bn/bn_lib.c:402:5: Assignment
  400.       a->neg = 0;
  401.       a->d[0] = w;
  402.       a->top = (w ? 1 : 0);
             ^
  403.       bn_check_top(a);
  404.       return (1);

test/bntest.c:1924:10: Call
1922.       BN_zero(zero);
1923.   
1924.       if (!TEST_true(BN_mod_exp(r, a, zero, BN_value_one(), NULL))
                 ^
1925.               || !TEST_BN_eq_zero(r)
1926.               || !TEST_true(BN_mod_exp_mont(r, a, zero, BN_value_one(),

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:395:1: Parameter `*a->d`
      393.   }
      394.   
      395. > int BN_set_word(BIGNUM *a, BN_ULONG w)
      396.   {
      397.       bn_check_top(a);

crypto/bn/bn_lib.c:398:9: Call
      396.   {
      397.       bn_check_top(a);
      398.       if (bn_expand(a, (int)sizeof(BN_ULONG) * 8) == NULL)
                     ^
      399.           return (0);
      400.       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_lcl.h:668:12: Call
        666.           return a;
        667.   
        668.       return bn_expand2((a),(bits+BN_BITS2-1)/BN_BITS2);
                          ^
        669.   }
        670.   

crypto/bn/bn_lib.c:284:1: Parameter `*b->d`
          282.    */
          283.   
          284. > BIGNUM *bn_expand2(BIGNUM *b, int words)
          285.   {
          286.       bn_check_top(b);

crypto/bn/bn_lib.c:289:23: Call
          287.   
          288.       if (words > b->dmax) {
          289.           BN_ULONG *a = bn_expand_internal(b, words);
                                       ^
          290.           if (!a)
          291.               return NULL;

crypto/bn/bn_lib.c:246:1: <Offset trace>
244.   /* This is used by bn_expand2() */
245.   /* The caller MUST check that words > b->dmax before calling this */
246. > static BN_ULONG *bn_expand_internal(const BIGNUM *b, int words)
247.   {
248.       BN_ULONG *a = NULL;

crypto/bn/bn_lib.c:246:1: Parameter `b->top`
            244.   /* This is used by bn_expand2() */
            245.   /* The caller MUST check that words > b->dmax before calling this */
            246. > static BN_ULONG *bn_expand_internal(const BIGNUM *b, int words)
            247.   {
            248.       BN_ULONG *a = NULL;

crypto/bn/bn_lib.c:246:1: <Length trace>
244.   /* This is used by bn_expand2() */
245.   /* The caller MUST check that words > b->dmax before calling this */
246. > static BN_ULONG *bn_expand_internal(const BIGNUM *b, int words)
247.   {
248.       BN_ULONG *a = NULL;

crypto/bn/bn_lib.c:246:1: Parameter `*b->d`
            244.   /* This is used by bn_expand2() */
            245.   /* The caller MUST check that words > b->dmax before calling this */
            246. > static BN_ULONG *bn_expand_internal(const BIGNUM *b, int words)
            247.   {
            248.       BN_ULONG *a = NULL;

crypto/bn/bn_lib.c:271:9: Array access: Offset added: [8, +oo] Size: [0, 536870848] by call to `BN_mod_exp` 
            269.       assert(b->top <= words);
            270.       if (b->top > 0)
            271.           memcpy(a, b->d, sizeof(*a) * b->top);
                           ^
            272.   
            273.       return a;
