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(parent: a0aec44) | patch
ext3: Add sanity check to make_indexed_dir
authorTheodore Ts'o <tytso@mit.edu>
Fri, 16 Jan 2009 16:13:47 +0000 (11:13 -0500)
committerGreg Kroah-Hartman <gregkh@suse.de>
Mon, 2 Feb 2009 16:28:13 +0000 (08:28 -0800)
commit6d3910dec56c78543e35550fad433366047e6878
tree9078546be66f3fc3433aa739895c39457003602ctree | snapshot
parenta0aec447b8076f10f0f46433f20ad3fa32e2c500commit | diff
ext3: Add sanity check to make_indexed_dir

commit a21102b55c4f8dfd3adb4a15a34cd62237b46039 upstream.

Make sure the rec_len field in the '..' entry is sane, lest we overrun
the directory block and cause a kernel oops on a purposefully
corrupted filesystem.

This fixes a bug related to a bug originally reported by Sami Liedes
for ext4 at:

http://bugzilla.kernel.org/show_bug.cgi?id=12430

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
fs/ext3/namei.c diff | blob | history
Linux kernels and configurations used by Zygo.