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(parent: fbb8878) | patch
udf: Check component length before reading it
authorJan Kara <jack@suse.cz>
Fri, 19 Dec 2014 13:27:55 +0000 (14:27 +0100)
committerJan Kara <jack@suse.cz>
Sun, 21 Dec 2014 21:42:19 +0000 (22:42 +0100)
commite6bea213a194587b08a824508fb7874dd4ec849e
tree33e14928a5c2fdee03df67e2e1e4f9991e056fc7tree | snapshot
parentfbb88783d2b9622262849cc46be548062b255065commit | diff
udf: Check component length before reading it

Check that length specified in a component of a symlink fits in the
input buffer we are reading. Also properly ignore component length for
component types that do not use it. Otherwise we read memory after end
of buffer for corrupted udf image.

Reported-by: Carl Henrik Lunde <chlunde@ping.uio.no>
CC: stable@vger.kernel.org
Signed-off-by: Jan Kara <jack@suse.cz>
fs/udf/symlink.c diff | blob | history
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