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(parent: c47b658) | 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)
committerCasey Schaufler <casey@schaufler-ca.com>
Mon, 7 Aug 2023 21:09:23 +0000 (14:09 -0700)
commit3ad49d37cf5759c3b8b68d02e3563f633d9c1aee
tree1c1ce8e2546ca1d443aed397d939b92efd3c2b84tree | snapshot
parentc47b65840024153f6a1c931d6c7c772b3482a0a4commit | diff
smackfs: Prevent underflow in smk_set_cipso()

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>
security/smack/smackfs.c diff | blob | history
Domain: System / Kernel;