tree fe0425a2ac97acce9b8d68b051edad388813dc59
parent 327eaf738ff97d19491362e30497954105d60414
author Theodore Ts'o <tytso@mit.edu> 1528863791 -0400
committer Theodore Ts'o <tytso@mit.edu> 1528863791 -0400

ext4: add corruption check in ext4_xattr_set_entry()

In theory this should have been caught earlier when the xattr list was
verified, but in case it got missed, it's simple enough to add check
to make sure we don't overrun the xattr buffer.

This addresses CVE-2018-10879.

https://bugzilla.kernel.org/show_bug.cgi?id=200001

Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Cc: stable@kernel.org