diff options
Diffstat (limited to 'crypto/openssl/crypto/bn/bn_print.c')
| -rw-r--r-- | crypto/openssl/crypto/bn/bn_print.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/crypto/openssl/crypto/bn/bn_print.c b/crypto/openssl/crypto/bn/bn_print.c index bfa31ef..51e4f9e 100644 --- a/crypto/openssl/crypto/bn/bn_print.c +++ b/crypto/openssl/crypto/bn/bn_print.c @@ -111,6 +111,7 @@ char *BN_bn2dec(const BIGNUM *a) char *p; BIGNUM *t = NULL; BN_ULONG *bn_data = NULL, *lp; + int bn_data_num; /*- * get an upper bound for the length of the decimal integer @@ -120,8 +121,8 @@ char *BN_bn2dec(const BIGNUM *a) */ i = BN_num_bits(a) * 3; num = (i / 10 + i / 1000 + 1) + 1; - bn_data = - (BN_ULONG *)OPENSSL_malloc((num / BN_DEC_NUM + 1) * sizeof(BN_ULONG)); + bn_data_num = num / BN_DEC_NUM + 1; + bn_data = OPENSSL_malloc(bn_data_num * sizeof(BN_ULONG)); buf = (char *)OPENSSL_malloc(num + 3); if ((buf == NULL) || (bn_data == NULL)) { BNerr(BN_F_BN_BN2DEC, ERR_R_MALLOC_FAILURE); @@ -143,7 +144,11 @@ char *BN_bn2dec(const BIGNUM *a) i = 0; while (!BN_is_zero(t)) { *lp = BN_div_word(t, BN_DEC_CONV); + if (*lp == (BN_ULONG)-1) + goto err; lp++; + if (lp - bn_data >= bn_data_num) + goto err; } lp--; /* |
