crypto/srp/srp_lib.c:198: error: BUFFER_OVERRUN_L3
  Offset added: [8, +oo] Size: [0, 536870848] by call to `BN_mod_exp`.
Showing all 32 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:89:1: Parameter `m->top`
  87.   }
  88.   
  89. > int BN_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, const BIGNUM *m,
  90.                  BN_CTX *ctx)
  91.   {

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

crypto/bn/bn_lib.c:829:1: Parameter `a->top`
    827.   }
    828.   
    829. > int BN_is_odd(const BIGNUM *a)
    830.   {
    831.       return (a->top > 0) && (a->d[0] & 1);

crypto/bn/bn_exp.c:141:19: Call
  139.               && (BN_get_flags(m, 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:1097:1: Parameter `m->top`
    1095.   }
    1096.   
    1097. > int BN_mod_exp_mont_word(BIGNUM *rr, BN_ULONG a, const BIGNUM *p,
    1098.                            const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *in_mont)
    1099.   {

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

crypto/bn/bn_lib.c:814:1: Parameter `a->top`
        812.   }
        813.   
        814. > int BN_is_zero(const BIGNUM *a)
        815.   {
        816.       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:89:1: Parameter `m->top`
  87.   }
  88.   
  89. > int BN_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, const BIGNUM *m,
  90.                  BN_CTX *ctx)
  91.   {

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

crypto/bn/bn_lib.c:829:1: Parameter `a->top`
    827.   }
    828.   
    829. > int BN_is_odd(const BIGNUM *a)
    830.   {
    831.       return (a->top > 0) && (a->d[0] & 1);

crypto/bn/bn_exp.c:149:15: Call
  147.   #ifdef RECP_MUL_MOD
  148.       {
  149.           ret = BN_mod_exp_recp(r, a, p, m, ctx);
                       ^
  150.       }
  151.   #else

crypto/bn/bn_exp.c:161:1: Parameter `m->top`
    159.   }
    160.   
    161. > int BN_mod_exp_recp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
    162.                       const BIGNUM *m, BN_CTX *ctx)
    163.   {

crypto/bn/bn_exp.c:200:14: Call
    198.       if (m->neg) {
    199.           /* ignore sign of 'm' */
    200.           if (!BN_copy(aa, m))
                        ^
    201.               goto err;
    202.           aa->neg = 0;

crypto/bn/bn_lib.c:285:1: <Offset trace>
283.   }
284.   
285. > BIGNUM *BN_copy(BIGNUM *a, const BIGNUM *b)
286.   {
287.       bn_check_top(b);

crypto/bn/bn_lib.c:285:1: Parameter `b->top`
      283.   }
      284.   
      285. > BIGNUM *BN_copy(BIGNUM *a, const BIGNUM *b)
      286.   {
      287.       bn_check_top(b);

crypto/bn/bn_lib.c:285:1: <Length trace>
283.   }
284.   
285. > BIGNUM *BN_copy(BIGNUM *a, const BIGNUM *b)
286.   {
287.       bn_check_top(b);

crypto/bn/bn_lib.c:285:1: Parameter `*a->d`
      283.   }
      284.   
      285. > BIGNUM *BN_copy(BIGNUM *a, const BIGNUM *b)
      286.   {
      287.       bn_check_top(b);

crypto/bn/bn_lib.c:291:9: Call
      289.       if (a == b)
      290.           return a;
      291.       if (bn_wexpand(a, b->top) == NULL)
                     ^
      292.           return NULL;
      293.   

crypto/bn/bn_lib.c:910:1: Parameter `*a->d`
        908.   }
        909.   
        910. > BIGNUM *bn_wexpand(BIGNUM *a, int words)
        911.   {
        912.       return (words <= a->dmax) ? a : bn_expand2(a, words);

crypto/bn/bn_lib.c:295:9: Array access: Offset added: [8, +oo] Size: [0, 536870848] by call to `BN_mod_exp` 
      293.   
      294.       if (b->top > 0)
      295.           memcpy(a->d, b->d, sizeof(b->d[0]) * b->top);
                     ^
      296.   
      297.       a->top = b->top;
