tree 66aaa5148e1271cbee32adb87a3279c57ff703f6
parent 22aeaa263221064fed02a557d2904e3588dcdf16
author Jan Kara <jack@suse.cz> 1418649766 +0100
committer Teemu Hukkanen <teemu@fairphone.com> 1485724822 +0100

FPII-2739:isofs: Fix infinite looping over CE entries

Rock Ridge extensions define so called Continuation Entries (CE) which
define where is further space with Rock Ridge data. Corrupted isofs
image can contain arbitrarily long chain of these, including a one
containing loop and thus causing kernel to end in an infinite loop when
traversing these entries.

Limit the traversal to 32 entries which should be more than enough space
to store all the Rock Ridge data.

Reported-by: P J P <ppandit@redhat.com>
CC: stable@vger.kernel.org
Signed-off-by: Jan Kara <jack@suse.cz>

Change-Id: Ie91e90ae474dedf7834c198b4cf5a0ceb7c09283