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Date: Wed, 20 Feb 2013 01:41:59 +0100
From: Petr Matousek <pmatouse@...hat.com>
To: oss-security@...ts.openwall.com
Cc: Kurt Seifried <kseifrie@...hat.com>
Subject: CVE request -- Linux kernel: vhost: fix length for cross region
descriptor
If a single descriptor crosses a region, the second chunk length should
be decremented by size translated so far, instead it includes the full
descriptor length. A privileged guest user could use this flaw to crash
the host or, potentially, corrupt host memory.
Upstream fix:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=bd97120fc3d1a11f3124c7c9ba1d91f51829eb85
References:
https://bugzilla.redhat.com/show_bug.cgi?id=912905
Thanks,
--
Petr Matousek / Red Hat Security Response Team
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