crypto/bn/bn_mont.c:75: error: BUFFER_OVERRUN_S2
  Offset: [max(1, `mont->N.top`), +oo] (⇐ [0, +oo] + [max(1, `mont->N.top`), `mont->N.top`]) Size: [0, 8388607] by call to `bn_from_montgomery_word`.
Showing all 10 steps of the trace


crypto/bn/bn_mont.c:37:1: Parameter `mont->N.top`
35.   }
36.   
37. > int bn_mul_mont_fixed_top(BIGNUM *r, const BIGNUM *a, const BIGNUM *b,
38.                             BN_MONT_CTX *mont, BN_CTX *ctx)
39.   {

crypto/bn/bn_mont.c:75:10: Call
73.       /* reduce from aRR to aR */
74.   #ifdef MONT_WORD
75.       if (!bn_from_montgomery_word(r, tmp, mont))
               ^
76.           goto err;
77.   #else

crypto/bn/bn_mont.c:125:21: <Offset trace>
123.        * includes |carry| which is stored separately.
124.        */
125.       for (carry = 0, i = 0; i < nl; i++, rp++) {
                           ^
126.           v = bn_mul_add_words(rp, np, nl, (rp[0] * n0) & BN_MASK2);
127.           v = (v + carry + rp[nl]) & BN_MASK2;

crypto/bn/bn_mont.c:125:21: Assignment
  123.        * includes |carry| which is stored separately.
  124.        */
  125.       for (carry = 0, i = 0; i < nl; i++, rp++) {
                             ^
  126.           v = bn_mul_add_words(rp, np, nl, (rp[0] * n0) & BN_MASK2);
  127.           v = (v + carry + rp[nl]) & BN_MASK2;

crypto/bn/bn_mont.c:88:1: <Length trace>
86.   
87.   #ifdef MONT_WORD
88. > static int bn_from_montgomery_word(BIGNUM *ret, BIGNUM *r, BN_MONT_CTX *mont)
89.   {
90.       BIGNUM *n;

crypto/bn/bn_mont.c:88:1: Parameter `*r->d`
  86.   
  87.   #ifdef MONT_WORD
  88. > static int bn_from_montgomery_word(BIGNUM *ret, BIGNUM *r, BN_MONT_CTX *mont)
  89.   {
  90.       BIGNUM *n;

crypto/bn/bn_mont.c:103:9: Call
  101.   
  102.       max = (2 * nl);             /* carry is stored separately */
  103.       if (bn_wexpand(r, max) == NULL)
                 ^
  104.           return 0;
  105.   

crypto/bn/bn_lib.c:960:1: Parameter `*a->d`
    958.   }
    959.   
    960. > BIGNUM *bn_wexpand(BIGNUM *a, int words)
    961.   {
    962.       return (words <= a->dmax) ? a : bn_expand2(a, words);

crypto/bn/bn_mont.c:108:5: Assignment
  106.       r->neg ^= n->neg;
  107.       np = n->d;
  108.       rp = r->d;
             ^
  109.   
  110.       /* clear the top words of T */

crypto/bn/bn_mont.c:129:24: Array access: Offset: [max(1, mont->N.top), +oo] (⇐ [0, +oo] + [max(1, mont->N.top), mont->N.top]) Size: [0, 8388607] by call to `bn_from_montgomery_word` 
  127.           v = (v + carry + rp[nl]) & BN_MASK2;
  128.           carry |= (v != rp[nl]);
  129.           carry &= (v <= rp[nl]);
                                ^
  130.           rp[nl] = v;
  131.       }
