crypto/ec/ecp_nistz256.c:1324: error: BUFFER_OVERRUN_L3
  Offset: [1, +oo] Size: [0, 8388607] by call to `ecp_nistz256_windowed_mul`.
Showing all 20 steps of the trace


crypto/ec/ecp_nistz256.c:1118:8: Parameter `scalar->top`
1116.   
1117.   /* r = scalar*G + sum(scalars[i]*points[i]) */
1118.   __owur static int ecp_nistz256_points_mul(const EC_GROUP *group,
               ^
1119.                                             EC_POINT *r,
1120.                                             const BIGNUM *scalar,

crypto/ec/ecp_nistz256.c:1324:14: Call
1322.               out = &p.p;
1323.   
1324.           if (!ecp_nistz256_windowed_mul(group, out, scalars, points, num, ctx))
                     ^
1325.               goto err;
1326.   

crypto/ec/ecp_nistz256.c:579:8: Parameter `(*scalar)->top`
  577.   
  578.   /* r = sum(scalar[i]*point[i]) */
  579.   __owur static int ecp_nistz256_windowed_mul(const EC_GROUP *group,
                ^
  580.                                               P256_POINT *r,
  581.                                               const BIGNUM **scalar,

crypto/ec/ecp_nistz256.c:614:14: Call
  612.   
  613.           /* This is an unusual input, we don't guarantee constant-timeness. */
  614.           if ((BN_num_bits(scalar[i]) > 256) || BN_is_negative(scalar[i])) {
                      ^
  615.               BIGNUM *mod;
  616.   

crypto/bn/bn_lib.c:140:9: Call
    138.       bn_check_top(a);
    139.   
    140.       if (BN_is_zero(a))
                   ^
    141.           return 0;
    142.       return ((i * BN_BITS2) + BN_num_bits_word(a->d[i]));

crypto/bn/bn_lib.c:843:1: Parameter `a->top`
      841.   }
      842.   
      843. > int BN_is_zero(const BIGNUM *a)
      844.   {
      845.       return a->top == 0;

crypto/ec/ecp_nistz256.c:619:18: Call
  617.               if ((mod = BN_CTX_get(ctx)) == NULL)
  618.                   goto err;
  619.               if (!BN_nnmod(mod, scalar[i], group->order, ctx)) {
                          ^
  620.                   ECerr(EC_F_ECP_NISTZ256_WINDOWED_MUL, ERR_R_BN_LIB);
  621.                   goto err;

crypto/bn/bn_mod.c:13:1: Parameter `m->top`
    11.   #include "bn_lcl.h"
    12.   
    13. > int BN_nnmod(BIGNUM *r, const BIGNUM *m, const BIGNUM *d, BN_CTX *ctx)
    14.   {
    15.       /*

crypto/bn/bn_mod.c:20:11: Call
    18.        */
    19.   
    20.       if (!(BN_mod(r, m, d, ctx)))
                    ^
    21.           return 0;
    22.       if (!r->neg)

crypto/bn/bn_div.c:188:1: Parameter `num->top`
      186.    * If 'dv' or 'rm' is NULL, the respective value is not returned.
      187.    */
      188. > int BN_div(BIGNUM *dv, BIGNUM *rm, const BIGNUM *num, const BIGNUM *divisor,
      189.              BN_CTX *ctx)
      190.   {

crypto/bn/bn_div.c:255:11: Call
      253.       sdiv->neg = 0;
      254.       norm_shift += BN_BITS2;
      255.       if (!(BN_lshift(snum, num, norm_shift)))
                       ^
      256.           goto err;
      257.       snum->neg = 0;

crypto/bn/bn_shift.c:83:1: <Offset trace>
81.   }
82.   
83. > int BN_lshift(BIGNUM *r, const BIGNUM *a, int n)
84.   {
85.       int i, nw, lb, rb;

crypto/bn/bn_shift.c:83:1: Parameter `n`
        81.   }
        82.   
        83. > int BN_lshift(BIGNUM *r, const BIGNUM *a, int n)
        84.   {
        85.       int i, nw, lb, rb;

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

crypto/bn/bn_shift.c:83:1: <Length trace>
81.   }
82.   
83. > int BN_lshift(BIGNUM *r, const BIGNUM *a, int n)
84.   {
85.       int i, nw, lb, rb;

crypto/bn/bn_shift.c:83:1: Parameter `*r->d`
        81.   }
        82.   
        83. > int BN_lshift(BIGNUM *r, const BIGNUM *a, int n)
        84.   {
        85.       int i, nw, lb, rb;

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

crypto/bn/bn_lib.c:939:1: Parameter `*a->d`
          937.   }
          938.   
          939. > BIGNUM *bn_wexpand(BIGNUM *a, int words)
          940.   {
          941.       return (words <= a->dmax) ? a : bn_expand2(a, words);

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

crypto/bn/bn_shift.c:112:13: Array access: Offset: [1, +oo] Size: [0, 8388607] by call to `ecp_nistz256_windowed_mul` 
        110.           for (i = a->top - 1; i >= 0; i--) {
        111.               l = f[i];
        112.               t[nw + i + 1] |= (l >> rb) & BN_MASK2;
                           ^
        113.               t[nw + i] = (l << lb) & BN_MASK2;
        114.           }
