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Check for errors in a2d_ASN1_OBJECT() 

Check for error return in BN_div_word().

Reviewed-by: Tim Hudson <tjh@openssl.org>
This commit is contained in:
Dr. Stephen Henson 2016-08-05 14:33:03 +01:00
parent 07bed46f33
commit 8b9afbc0fc
1 changed files with 6 additions and 2 deletions
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8
crypto/asn1/a_object.c
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@ -127,8 +127,12 @@ int a2d_ASN1_OBJECT(unsigned char *out, int olen, const char *buf, int num)
if (tmp == NULL) if (tmp == NULL)
goto err; goto err;
} }
while (blsize--) while (blsize--) {
tmp[i++] = (unsigned char)BN_div_word(bl, 0x80L); BN_ULONG t = BN_div_word(bl, 0x80L);
if (t == (BN_ULONG)-1)
goto err;
tmp[i++] = (unsigned char)t;
}
} else { } else {
for (;;) { for (;;) {