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(parent: 245af7e) | patch
Cramfs: fix abad comparison when wrap-arounds occur
authorNicolas Pitre <nicolas.pitre@linaro.org>
Tue, 30 Oct 2018 17:26:15 +0000 (13:26 -0400)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Tue, 13 Nov 2018 19:17:03 +0000 (11:17 -0800)
commitaa52629c60b1c0a0957e3a679d169b0b85367e98
treead935613e4cbd67afeaab97951b835b99df6cb4etree | snapshot
parent245af7ee61ef0a399521a48babe12a32fa36d336commit | diff
Cramfs: fix abad comparison when wrap-arounds occur

commit 672ca9dd13f1aca0c17516f76fc5b0e8344b3e46 upstream.

It is possible for corrupted filesystem images to produce very large
block offsets that may wrap when a length is added, and wrongly pass
the buffer size test.

Reported-by: Anatoly Trosinenko <anatoly.trosinenko@gmail.com>
Signed-off-by: Nicolas Pitre <nico@linaro.org>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
fs/cramfs/inode.c diff | blob | history
Linux kernels and configurations used by Zygo.