crypto/ec/ecp_smpl.c:1018: error: BUFFER_OVERRUN_L3
  Offset added: [8, +oo] Size: [0, 536870848] by call to `BN_mod_add_quick`.
Showing all 18 steps of the trace


crypto/ec/ecp_smpl.c:976:10: Call
974.   
975.       BN_CTX_start(ctx);
976.       rh = BN_CTX_get(ctx);
                ^
977.       tmp = BN_CTX_get(ctx);
978.       Z4 = BN_CTX_get(ctx);

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:366:15: Assignment
    364.       a->neg = 0;
    365.       a->d[0] = w;
    366.       a->top = (w ? 1 : 0);
                         ^
    367.       a->flags &= ~BN_FLG_FIXED_TOP;
    368.       bn_check_top(a);

crypto/bn/bn_lib.c:366:5: Assignment
    364.       a->neg = 0;
    365.       a->d[0] = w;
    366.       a->top = (w ? 1 : 0);
               ^
    367.       a->flags &= ~BN_FLG_FIXED_TOP;
    368.       bn_check_top(a);

crypto/ec/ecp_smpl.c:1018:18: Call
1016.               if (!field_mul(group, tmp, Z4, group->a, ctx))
1017.                   goto err;
1018.               if (!BN_mod_add_quick(rh, rh, tmp, p))
                         ^
1019.                   goto err;
1020.               if (!field_mul(group, rh, rh, point->X, ctx))

crypto/bn/bn_mod.c:93:1: Parameter `*r->d`
  91.   }
  92.   
  93. > int BN_mod_add_quick(BIGNUM *r, const BIGNUM *a, const BIGNUM *b,
  94.                        const BIGNUM *m)
  95.   {

crypto/bn/bn_mod.c:96:15: Call
  94.                        const BIGNUM *m)
  95.   {
  96.       int ret = bn_mod_add_fixed_top(r, a, b, m);
                      ^
  97.   
  98.       if (ret)

crypto/bn/bn_mod.c:48:1: Parameter `*r->d`
    46.    * move depending on whether or not subtraction borrowed.
    47.    */
    48. > int bn_mod_add_fixed_top(BIGNUM *r, const BIGNUM *a, const BIGNUM *b,
    49.                            const BIGNUM *m)
    50.   {

crypto/bn/bn_mod.c:56:9: Call
    54.       const BN_ULONG *ap, *bp;
    55.   
    56.       if (bn_wexpand(r, mtop) == NULL)
                  ^
    57.           return 0;
    58.   

crypto/bn/bn_lib.c:948:1: Parameter `*a->d`
      946.   }
      947.   
      948. > BIGNUM *bn_wexpand(BIGNUM *a, int words)
      949.   {
      950.       return (words <= a->dmax) ? a : bn_expand2(a, words);

crypto/bn/bn_lib.c:950:37: Call
      948.   BIGNUM *bn_wexpand(BIGNUM *a, int words)
      949.   {
      950.       return (words <= a->dmax) ? a : bn_expand2(a, words);
                                                 ^
      951.   }
      952.   

crypto/bn/bn_lib.c:245:1: Parameter `*b->d`
        243.    */
        244.   
        245. > BIGNUM *bn_expand2(BIGNUM *b, int words)
        246.   {
        247.       if (words > b->dmax) {

crypto/bn/bn_lib.c:248:23: Call
        246.   {
        247.       if (words > b->dmax) {
        248.           BN_ULONG *a = bn_expand_internal(b, words);
                                     ^
        249.           if (!a)
        250.               return NULL;

crypto/bn/bn_lib.c:209:1: <Offset trace>
207.   /* This is used by bn_expand2() */
208.   /* The caller MUST check that words > b->dmax before calling this */
209. > static BN_ULONG *bn_expand_internal(const BIGNUM *b, int words)
210.   {
211.       BN_ULONG *a = NULL;

crypto/bn/bn_lib.c:209:1: Parameter `b->top`
          207.   /* This is used by bn_expand2() */
          208.   /* The caller MUST check that words > b->dmax before calling this */
          209. > static BN_ULONG *bn_expand_internal(const BIGNUM *b, int words)
          210.   {
          211.       BN_ULONG *a = NULL;

crypto/bn/bn_lib.c:209:1: <Length trace>
207.   /* This is used by bn_expand2() */
208.   /* The caller MUST check that words > b->dmax before calling this */
209. > static BN_ULONG *bn_expand_internal(const BIGNUM *b, int words)
210.   {
211.       BN_ULONG *a = NULL;

crypto/bn/bn_lib.c:209:1: Parameter `*b->d`
          207.   /* This is used by bn_expand2() */
          208.   /* The caller MUST check that words > b->dmax before calling this */
          209. > static BN_ULONG *bn_expand_internal(const BIGNUM *b, int words)
          210.   {
          211.       BN_ULONG *a = NULL;

crypto/bn/bn_lib.c:232:9: Array access: Offset added: [8, +oo] Size: [0, 536870848] by call to `BN_mod_add_quick` 
          230.       assert(b->top <= words);
          231.       if (b->top > 0)
          232.           memcpy(a, b->d, sizeof(*a) * b->top);
                         ^
          233.   
          234.       return a;
