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(parent: 84df952) | 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)
committerNicolas Pitre <nicolas.pitre@linaro.org>
Tue, 30 Oct 2018 18:24:19 +0000 (14:24 -0400)
commit672ca9dd13f1aca0c17516f76fc5b0e8344b3e46
treed4cc70b2e65749144bb5992ca4c8a3232d444a64tree | snapshot
parent84df9525b0c27f3ebc2ebb1864fa62a97fdedb7dcommit | diff
Cramfs: fix abad comparison when wrap-arounds occur

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
fs/cramfs/inode.c diff | blob | history
https://github.com/torvalds/linux.git