Skip to content
Permalink
Browse files Browse the repository at this point in the history
cdrom: fix improper type cast, which can leat to information leak.
There is another cast from unsigned long to int which causes
a bounds check to fail with specially crafted input. The value is
then used as an index in the slot array in cdrom_slot_status().

This issue is similar to CVE-2018-16658 and CVE-2018-10940.

Signed-off-by: Young_X <YangX92@hotmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
  • Loading branch information
Yoha-test authored and axboe committed Oct 3, 2018
1 parent fb6360b commit e4f3aa2
Showing 1 changed file with 1 addition and 1 deletion.
2 changes: 1 addition & 1 deletion drivers/cdrom/cdrom.c
Expand Up @@ -2445,7 +2445,7 @@ static int cdrom_ioctl_select_disc(struct cdrom_device_info *cdi,
return -ENOSYS;

if (arg != CDSL_CURRENT && arg != CDSL_NONE) {
if ((int)arg >= cdi->capacity)
if (arg >= cdi->capacity)
return -EINVAL;
}

Expand Down

0 comments on commit e4f3aa2

Please sign in to comment.