Theodore Ts'o 353ebd3e98 ext4: verify the depth of extent tree in ext4_find_extent()
commit bc890a60247171294acc0bd67d211fa4b88d40ba upstream.

If there is a corupted file system where the claimed depth of the
extent tree is -1, this can cause a massive buffer overrun leading to
sadness.

This addresses CVE-2018-10877.

https://bugzilla.kernel.org/show_bug.cgi?id=199417

Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-11 16:03:48 +02:00
..
2017-12-20 10:04:56 +01:00
2017-08-06 19:19:42 -07:00
2018-05-30 07:49:13 +02:00
2017-11-30 08:37:20 +00:00
2015-11-13 20:34:33 -05:00
2015-11-23 21:11:08 -05:00
2018-07-03 11:21:34 +02:00
2018-06-06 16:46:23 +02:00
2015-11-10 12:07:22 -08:00
2017-06-14 13:16:24 +02:00
2015-11-16 23:54:45 -08:00
2018-05-16 10:06:51 +02:00
2015-11-16 23:54:45 -08:00
2015-08-12 15:28:45 -05:00
2017-06-14 13:16:24 +02:00
2018-02-16 20:09:43 +01:00
2017-06-14 13:16:24 +02:00