crypto/bn/bn_gf2m.c:988: error: BUFFER_OVERRUN_L3
  Offset added: [8, +oo] Size: [0, 536870848] by call to `BN_set_bit`.
Showing all 16 steps of the trace


crypto/bn/bn_gf2m.c:985:14: Call
983.   
984.       BN_CTX_start(ctx);
985.       if ((u = BN_CTX_get(ctx)) == NULL)
                    ^
986.           goto err;
987.   

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:405:15: Assignment
    403.       a->neg = 0;
    404.       a->d[0] = w;
    405.       a->top = (w ? 1 : 0);
                         ^
    406.       bn_check_top(a);
    407.       return 1;

crypto/bn/bn_lib.c:405:5: Assignment
    403.       a->neg = 0;
    404.       a->d[0] = w;
    405.       a->top = (w ? 1 : 0);
               ^
    406.       bn_check_top(a);
    407.       return 1;

crypto/bn/bn_gf2m.c:988:10: Call
986.           goto err;
987.   
988.       if (!BN_set_bit(u, p[0] - 1))
                ^
989.           goto err;
990.       ret = BN_GF2m_mod_exp_arr(r, a, u, p, ctx);

crypto/bn/bn_lib.c:627:1: Parameter `*a->d`
  625.   }
  626.   
  627. > int BN_set_bit(BIGNUM *a, int n)
  628.   {
  629.       int i, j, k;

crypto/bn/bn_lib.c:637:13: Call
  635.       j = n % BN_BITS2;
  636.       if (a->top <= i) {
  637.           if (bn_wexpand(a, i + 1) == NULL)
                     ^
  638.               return (0);
  639.           for (k = a->top; k < i + 1; k++)

crypto/bn/bn_lib.c:951:1: Parameter `*a->d`
    949.   }
    950.   
    951. > BIGNUM *bn_wexpand(BIGNUM *a, int words)
    952.   {
    953.       return (words <= a->dmax) ? a : bn_expand2(a, words);

crypto/bn/bn_lib.c:953:37: Call
    951.   BIGNUM *bn_wexpand(BIGNUM *a, int words)
    952.   {
    953.       return (words <= a->dmax) ? a : bn_expand2(a, words);
                                               ^
    954.   }
    955.   

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_set_bit` 
        269.       assert(b->top <= words);
        270.       if (b->top > 0)
        271.           memcpy(a, b->d, sizeof(*a) * b->top);
                       ^
        272.   
        273.       return a;
