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Re: CVE Request: kernel - sock_diag: Fix out-of-bounds access to sock_diag_handlers[]
From: Petr Matousek <pmatouse () redhat com>
Date: Sun, 24 Feb 2013 14:49:31 +0100

On Sun, Feb 24, 2013 at 10:10:45AM +0100, Mathias Krause wrote:
An unprivileged user can send a netlink message resulting in an
out-of-bounds access of the sock_diag_handlers[] array which, in turn,
allows userland to take over control while in kernel mode.

Patch (already in net/master):
http://thread.gmane.org/gmane.linux.network/260061

Affected versions:
v3.3 - v3.8

PoC is not attached this time but can be requested on demand. Hint:
Works well on Fedora 18, bypassing all mmap_min_addr checks. ;)

Please use CVE-2013-1763.

Thanks,
-- 
Petr Matousek / Red Hat Security Response Team


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