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Date: Wed, 27 Apr 2022 09:45:54 +0200
From: Marcus Meissner <meissner@...e.de>
To: OSS Security List <oss-security@...ts.openwall.com>
Subject: CVE-2022-27239: cifs-utils mount.cifs buffer overflow in ip parameter
Hi,
A buffer overflow in mounts.cifs commandline parameter ip= handling
was just fixed/published.
CVE-2022-27239
https://bugzilla.suse.com/show_bug.cgi?id=1197216
https://github.com/piastry/cifs-utils/pull/7
https://github.com/piastry/cifs-utils/pull/7/commits/955fb147e97a6a74e1aaa65766de91e2c1479765
(mounts.cifs is usually setuid-root)
This was reported by Jeffrey Bencteux <jbe@...rosec.com> to samba security.
Both -fstack-protector and -D_FORTIFY_SOURCE=2 overflow protections are catching it.
Ciao, Marcus
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