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(parent: 9173d04) | patch
udf: Verify symlink size before loading it
authorJan Kara <jack@suse.cz>
Fri, 19 Dec 2014 11:21:47 +0000 (12:21 +0100)
committerJan Kara <jack@suse.cz>
Fri, 19 Dec 2014 12:17:10 +0000 (13:17 +0100)
commit9ef3c8295e9319de3ae820b3b0f269e1af735d75
tree92c3c45e582c0fb7f160ecfd0126dc6a612a879btree | snapshot
parent9173d04f16b50d8698cd42f0d0de5e6c649e22e9commit | diff
udf: Verify symlink size before loading it

UDF specification allows arbitrarily large symlinks. However we support
only symlinks at most one block large. Check the length of the symlink
so that we don't access memory beyond end of the symlink block.

CC: stable@vger.kernel.org
Reported-by: Carl Henrik Lunde <chlunde@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
fs/udf/symlink.c diff | blob | history
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