crypto/bn/bn_exp.c:1099: error: BUFFER_OVERRUN_L3
  Offset added: [8, +oo] Size: [0, 67108856] by call to `bn_mul_mont_fixed_top`.
Showing all 22 steps of the trace


crypto/bn/bn_exp.c:1063:14: Call
1061.           bits -= window0;
1062.           wvalue = bn_get_bits(p, bits) & wmask;
1063.           if (!MOD_EXP_CTIME_COPY_FROM_PREBUF(&tmp, top, powerbuf, wvalue,
                     ^
1064.                                               window))
1065.               goto err;

crypto/bn/bn_exp.c:521:1: Parameter `top`
  519.   }
  520.   
  521. > static int MOD_EXP_CTIME_COPY_FROM_PREBUF(BIGNUM *b, int top,
  522.                                             unsigned char *buf, int idx,
  523.                                             int window)

crypto/bn/bn_exp.c:578:5: Assignment
  576.       }
  577.   
  578.       b->top = top;
             ^
  579.       b->flags |= BN_FLG_FIXED_TOP;
  580.       return 1;

crypto/bn/bn_exp.c:1099:18: Call
1097.   
1098.               /* Multiply the result into the intermediate result */
1099.               if (!bn_mul_mont_fixed_top(&tmp, &tmp, &am, mont, ctx))
                         ^
1100.                   goto err;
1101.           }

crypto/bn/bn_mont.c:37:1: Parameter `r->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:46:13: Call
  44.   #if defined(OPENSSL_BN_ASM_MONT) && defined(MONT_WORD)
  45.       if (num > 1 && a->top == num && b->top == num) {
  46.           if (bn_wexpand(r, num) == NULL)
                    ^
  47.               return 0;
  48.           if (bn_mul_mont(r->d, a->d, b->d, mont->N.d, mont->n0, num)) {

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

crypto/bn/bn_lib.c:951:37: Call
    949.   BIGNUM *bn_wexpand(BIGNUM *a, int words)
    950.   {
    951.       return (words <= a->dmax) ? a : bn_expand2(a, words);
                                               ^
    952.   }
    953.   

crypto/bn/bn_lib.c:245:1: Parameter `b->top`
      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 `words`
        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:224:13: Call
        222.           a = OPENSSL_secure_zalloc(words * sizeof(*a));
        223.       else
        224.           a = OPENSSL_zalloc(words * sizeof(*a));
                           ^
        225.       if (a == NULL) {
        226.           BNerr(BN_F_BN_EXPAND_INTERNAL, ERR_R_MALLOC_FAILURE);

crypto/mem.c:228:1: Parameter `num`
          226.   }
          227.   
          228. > void *CRYPTO_zalloc(size_t num, const char *file, int line)
          229.   {
          230.       void *ret = CRYPTO_malloc(num, file, line);

crypto/mem.c:230:17: Call
          228.   void *CRYPTO_zalloc(size_t num, const char *file, int line)
          229.   {
          230.       void *ret = CRYPTO_malloc(num, file, line);
                                 ^
          231.   
          232.       FAILTEST();

crypto/mem.c:201:9: Assignment
            199.   
            200.       if (num == 0)
            201.           return NULL;
                           ^
            202.   
            203.       FAILTEST();

crypto/mem.c:230:5: Assignment
          228.   void *CRYPTO_zalloc(size_t num, const char *file, int line)
          229.   {
          230.       void *ret = CRYPTO_malloc(num, file, line);
                     ^
          231.   
          232.       FAILTEST();

crypto/mem.c:235:5: Assignment
          233.       if (ret != NULL)
          234.           memset(ret, 0, num);
          235.       return ret;
                     ^
          236.   }
          237.   

crypto/bn/bn_lib.c:224:9: Assignment
        222.           a = OPENSSL_secure_zalloc(words * sizeof(*a));
        223.       else
        224.           a = OPENSSL_zalloc(words * sizeof(*a));
                       ^
        225.       if (a == NULL) {
        226.           BNerr(BN_F_BN_EXPAND_INTERNAL, ERR_R_MALLOC_FAILURE);

crypto/bn/bn_lib.c:232:9: Array access: Offset added: [8, +oo] Size: [0, 67108856] by call to `bn_mul_mont_fixed_top` 
        230.       assert(b->top <= words);
        231.       if (b->top > 0)
        232.           memcpy(a, b->d, sizeof(*a) * b->top);
                       ^
        233.   
        234.       return a;
