crypto/srp/srp_lib.c:198: error: BUFFER_OVERRUN_L3
  Offset added: [8, +oo] Size: [0, 67108856] by call to `BN_mod_exp`.
Showing all 34 steps of the trace


crypto/srp/srp_lib.c:170:1: Parameter `N->top`
168.   }
169.   
170. > BIGNUM *SRP_Calc_client_key(const BIGNUM *N, const BIGNUM *B, const BIGNUM *g,
171.                               const BIGNUM *x, const BIGNUM *a, const BIGNUM *u)
172.   {

crypto/srp/srp_lib.c:185:10: Call
183.           goto err;
184.   
185.       if (!BN_mod_exp(tmp, g, x, N, bn_ctx))
                ^
186.           goto err;
187.       if ((k = srp_Calc_k(N, g)) == NULL)

crypto/bn/bn_exp.c:88:1: Parameter `m->top`
  86.   }
  87.   
  88. > int BN_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, const BIGNUM *m,
  89.                  BN_CTX *ctx)
  90.   {

crypto/bn/bn_exp.c:133:9: Call
  131.   
  132.   #ifdef MONT_MUL_MOD
  133.       if (BN_is_odd(m)) {
                 ^
  134.   # ifdef MONT_EXP_WORD
  135.           if (a->top == 1 && !a->neg

crypto/bn/bn_lib.c:870:1: Parameter `a->top`
    868.   }
    869.   
    870. > int BN_is_odd(const BIGNUM *a)
    871.   {
    872.       return (a->top > 0) && (a->d[0] & 1);

crypto/bn/bn_exp.c:138:19: Call
  136.               && (BN_get_flags(p, BN_FLG_CONSTTIME) == 0)) {
  137.               BN_ULONG A = a->d[0];
  138.               ret = BN_mod_exp_mont_word(r, A, p, m, ctx, NULL);
                           ^
  139.           } else
  140.   # endif

crypto/bn/bn_exp.c:1088:1: Parameter `m->top`
    1086.   }
    1087.   
    1088. > int BN_mod_exp_mont_word(BIGNUM *rr, BN_ULONG a, const BIGNUM *p,
    1089.                            const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *in_mont)
    1090.   {

crypto/srp/srp_lib.c:187:14: Call
185.       if (!BN_mod_exp(tmp, g, x, N, bn_ctx))
186.           goto err;
187.       if ((k = srp_Calc_k(N, g)) == NULL)
                    ^
188.           goto err;
189.       if (!BN_mod_mul(tmp2, tmp, k, N, bn_ctx))

crypto/srp/srp_lib.c:41:1: Parameter `N->top`
  39.   }
  40.   
  41. > static BIGNUM *srp_Calc_k(const BIGNUM *N, const BIGNUM *g)
  42.   {
  43.       /* k = SHA1(N | PAD(g)) -- tls-srp draft 8 */

crypto/srp/srp_lib.c:44:12: Call
  42.   {
  43.       /* k = SHA1(N | PAD(g)) -- tls-srp draft 8 */
  44.       return srp_Calc_xy(N, g, N);
                   ^
  45.   }
  46.   

crypto/srp/srp_lib.c:19:1: Parameter `N->top`
    17.   /* calculate = SHA1(PAD(x) || PAD(y)) */
    18.   
    19. > static BIGNUM *srp_Calc_xy(const BIGNUM *x, const BIGNUM *y, const BIGNUM *N)
    20.   {
    21.       unsigned char digest[SHA_DIGEST_LENGTH];

crypto/srp/srp_lib.c:23:16: Call
    21.       unsigned char digest[SHA_DIGEST_LENGTH];
    22.       unsigned char *tmp = NULL;
    23.       int numN = BN_num_bytes(N);
                         ^
    24.       BIGNUM *res = NULL;
    25.       if (x != N && BN_ucmp(x, N) >= 0)

crypto/bn/bn_lib.c:166:9: Call
      164.       bn_check_top(a);
      165.   
      166.       if (BN_is_zero(a))
                     ^
      167.           return 0;
      168.       return ((i * BN_BITS2) + BN_num_bits_word(a->d[i]));

crypto/bn/bn_lib.c:855:1: Parameter `a->top`
        853.   }
        854.   
        855. > int BN_is_zero(const BIGNUM *a)
        856.   {
        857.       return a->top == 0;

crypto/srp/srp_lib.c:189:10: Call
187.       if ((k = srp_Calc_k(N, g)) == NULL)
188.           goto err;
189.       if (!BN_mod_mul(tmp2, tmp, k, N, bn_ctx))
                ^
190.           goto err;
191.       if (!BN_mod_sub(tmp, B, tmp2, N, bn_ctx))

crypto/bn/bn_mod.c:73:1: Parameter `m->top`
  71.   
  72.   /* slow but works */
  73. > int BN_mod_mul(BIGNUM *r, const BIGNUM *a, const BIGNUM *b, const BIGNUM *m,
  74.                  BN_CTX *ctx)
  75.   {

crypto/srp/srp_lib.c:191:10: Call
189.       if (!BN_mod_mul(tmp2, tmp, k, N, bn_ctx))
190.           goto err;
191.       if (!BN_mod_sub(tmp, B, tmp2, N, bn_ctx))
                ^
192.           goto err;
193.       if (!BN_mul(tmp3, u, x, bn_ctx))

crypto/bn/bn_mod.c:50:1: Parameter `m->top`
  48.   }
  49.   
  50. > int BN_mod_sub(BIGNUM *r, const BIGNUM *a, const BIGNUM *b, const BIGNUM *m,
  51.                  BN_CTX *ctx)
  52.   {

crypto/srp/srp_lib.c:198:23: Call
196.           goto err;
197.       K = BN_new();
198.       if (K != NULL && !BN_mod_exp(K, tmp, tmp2, N, bn_ctx)) {
                             ^
199.           BN_free(K);
200.           K = NULL;

crypto/bn/bn_exp.c:88:1: Parameter `m->top`
  86.   }
  87.   
  88. > int BN_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, const BIGNUM *m,
  89.                  BN_CTX *ctx)
  90.   {

crypto/bn/bn_exp.c:133:9: Call
  131.   
  132.   #ifdef MONT_MUL_MOD
  133.       if (BN_is_odd(m)) {
                 ^
  134.   # ifdef MONT_EXP_WORD
  135.           if (a->top == 1 && !a->neg

crypto/bn/bn_lib.c:870:1: Parameter `a->top`
    868.   }
    869.   
    870. > int BN_is_odd(const BIGNUM *a)
    871.   {
    872.       return (a->top > 0) && (a->d[0] & 1);

crypto/bn/bn_exp.c:146:15: Call
  144.   #ifdef RECP_MUL_MOD
  145.       {
  146.           ret = BN_mod_exp_recp(r, a, p, m, ctx);
                       ^
  147.       }
  148.   #else

crypto/bn/bn_exp.c:158:1: Parameter `m->top`
    156.   }
    157.   
    158. > int BN_mod_exp_recp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
    159.                       const BIGNUM *m, BN_CTX *ctx)
    160.   {

crypto/bn/bn_exp.c:201:13: Call
    199.               goto err;
    200.       } else {
    201.           if (BN_RECP_CTX_set(&recp, m, ctx) <= 0)
                       ^
    202.               goto err;
    203.       }

crypto/bn/bn_recp.c:44:1: Parameter `d->top`
      42.   }
      43.   
      44. > int BN_RECP_CTX_set(BN_RECP_CTX *recp, const BIGNUM *d, BN_CTX *ctx)
      45.   {
      46.       if (!BN_copy(&(recp->N), d))

crypto/bn/bn_recp.c:46:10: Call
      44.   int BN_RECP_CTX_set(BN_RECP_CTX *recp, const BIGNUM *d, BN_CTX *ctx)
      45.   {
      46.       if (!BN_copy(&(recp->N), d))
                     ^
      47.           return 0;
      48.       BN_zero(&(recp->Nr));

crypto/bn/bn_lib.c:323:1: <Offset trace>
321.   }
322.   
323. > BIGNUM *BN_copy(BIGNUM *a, const BIGNUM *b)
324.   {
325.       bn_check_top(b);

crypto/bn/bn_lib.c:323:1: Parameter `b->top`
        321.   }
        322.   
        323. > BIGNUM *BN_copy(BIGNUM *a, const BIGNUM *b)
        324.   {
        325.       bn_check_top(b);

crypto/bn/bn_lib.c:323:1: <Length trace>
321.   }
322.   
323. > BIGNUM *BN_copy(BIGNUM *a, const BIGNUM *b)
324.   {
325.       bn_check_top(b);

crypto/bn/bn_lib.c:323:1: Parameter `*a->d`
        321.   }
        322.   
        323. > BIGNUM *BN_copy(BIGNUM *a, const BIGNUM *b)
        324.   {
        325.       bn_check_top(b);

crypto/bn/bn_lib.c:329:9: Call
        327.       if (a == b)
        328.           return a;
        329.       if (bn_wexpand(a, b->top) == NULL)
                       ^
        330.           return NULL;
        331.   

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:333:9: Array access: Offset added: [8, +oo] Size: [0, 67108856] by call to `BN_mod_exp` 
        331.   
        332.       if (b->top > 0)
        333.           memcpy(a->d, b->d, sizeof(b->d[0]) * b->top);
                       ^
        334.   
        335.       if (BN_get_flags(b, BN_FLG_CONSTTIME) != 0)
