netdev - Fixing CVE-2017-16939 in v4.4.y and possibly v3.18.y

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:   Thu, 30 Nov 2017 10:37:40 -0800
From:   Guenter Roeck <linux@...ck-us.net>
To:     netdev@...r.kernel.org
Cc:     stable@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Fixing CVE-2017-16939 in v4.4.y and possibly v3.18.y

Hi,

The fix for CVE-2017-16939 has been applied to v4.9.y, but not to v4.4.y
and older kernels. However, I confirmed that running the published POC
(see https://blogs.securiteam.com/index.php/archives/3535) does crash a 4.4
kernel.

I confirmed that the following two patches fix the problem in v4.4.y.
Please consider applying them to v4.4.y (and possibly v3.18.y).

fc9e50f5a5a4e ("netlink: add a start callback for starting a netlink dump")
1137b5e2529a8 ("ipsec: Fix aborted xfrm policy dump crash")

My apologies for the noise if this is already under consideration.

Thanks,
Guenter