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(parent: d1994bb) | patch
smackfs: Prevent underflow in smk_set_cipso()
authorDan Carpenter <dan.carpenter@linaro.org>
Thu, 6 Jul 2023 05:52:39 +0000 (08:52 +0300)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 13 Sep 2023 07:42:42 +0000 (09:42 +0200)
commitd41ceafe3d24b76aaa43cfab999335dbb24140af
tree5c1ca53a28c79390de5d969baad3a86b53ec2752tree | snapshot
parentd1994bb5947ccef26364911c4090ef1caf19f02ccommit | diff
smackfs: Prevent underflow in smk_set_cipso()

[ Upstream commit 3ad49d37cf5759c3b8b68d02e3563f633d9c1aee ]

There is a upper bound to "catlen" but no lower bound to prevent
negatives.  I don't see that this necessarily causes a problem but we
may as well be safe.

Fixes: e114e473771c ("Smack: Simplified Mandatory Access Control Kernel")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Casey Schaufler <casey@schaufler-ca.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
security/smack/smackfs.c diff | blob | history
Domain: System / Kernel;