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(parent: b13fdeb) | patch
lz4: ensure length does not wrap
authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sat, 21 Jun 2014 05:01:41 +0000 (22:01 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 26 Jun 2014 19:15:42 +0000 (15:15 -0400)
commit5f32449c2863adf190b83402e9a4069cee054f9d
treeabb5d36646c95474f7c50bb161b8308c0a29267atree | snapshot
parentb13fdebb805e4a4c7130f7405d7d3ddd3eeb2a77commit | diff
lz4: ensure length does not wrap

commit 206204a1162b995e2185275167b22468c00d6b36 upstream.

Given some pathologically compressed data, lz4 could possibly decide to
wrap a few internal variables, causing unknown things to happen.  Catch
this before the wrapping happens and abort the decompression.

Reported-by: "Don A. Bailey" <donb@securitymouse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
lib/lz4/lz4_decompress.c diff | blob | history
unionfs2-2.6.39.y