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(parent: 327eaf7) | patch
ext4: add corruption check in ext4_xattr_set_entry()
authorTheodore Ts'o <tytso@mit.edu>
Wed, 13 Jun 2018 04:23:11 +0000 (00:23 -0400)
committerTheodore Ts'o <tytso@mit.edu>
Wed, 13 Jun 2018 04:23:11 +0000 (00:23 -0400)
commit5369a762c882c0b6e9599e4ebbb3a9ba9eee7e2d
treefe0425a2ac97acce9b8d68b051edad388813dc59tree | snapshot
parent327eaf738ff97d19491362e30497954105d60414commit | diff
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
fs/ext4/xattr.c diff | blob | blame | history
Linux 6.x block layer and io_uring tree(s)