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udf: Limit sparing table size
authorJan Kara <jack@suse.cz>
Fri, 25 Sep 2020 12:53:08 +0000 (14:53 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 30 Oct 2020 09:38:29 +0000 (10:38 +0100)
commitc33948e7f5295fb18797080507b2c7f2bab323f9
tree8d63afa5d44b952873353b046758ce1fe0e81724tree
parentcedb0187b8ba929c3f76f28e6bc25804d65f8a54commit | diff
udf: Limit sparing table size

[ Upstream commit 44ac6b829c4e173fdf6df18e6dd86aecf9a3dc99 ]

Although UDF standard allows it, we don't support sparing table larger
than a single block. Check it during mount so that we don't try to
access memory beyond end of buffer.

Reported-by: syzbot+9991561e714f597095da@syzkaller.appspotmail.com
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Sasha Levin <sashal@kernel.org>
fs/udf/super.c diff | blob | blame | history
Mirror https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git