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Message-ID: <526ACF83.4060108@redhat.com>
Date: Fri, 25 Oct 2013 14:07:31 -0600
From: Kurt Seifried <kseifried@...hat.com>
To: oss-security@...ts.openwall.com
Subject: Re: CVE request: Linux kernel: net: memory corruption
with UDP_CORK and UFO
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Hash: SHA1
On 10/25/2013 08:11 AM, P J P wrote:
> Hello,
>
> Linux kernel built with an Ethernet driver(ex virtio-net) which has UDP
> Fragmentation Offload(UFO) feature ON is vulnerable to a memory
> corruption flaw when UDP_CORK socket option is set. It could occur when
> sending large messages, wherein all messages are not greater than
> maximum transfer unit(MTU) of the underlying medium.
>
> An unprivileged user/program could use this flaw to crash the kernel
> resulting in DoS, or potentially execute arbitrary code to escalate
> privileges to gain root access to a system.
>
> Upstream fix:
> -------------
> -> http://patchwork.ozlabs.org/patch/285292/
>
> Reference:
> ----------
> -> https://bugzilla.redhat.com/show_bug.cgi?id=1023477
>
>
> Thank you.
> --
> Prasad J Pandit / Red Hat Security Response Team
Please use CVE-2013-4470 for this issue.
- --
Kurt Seifried Red Hat Security Response Team (SRT)
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