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Date: Tue, 10 Dec 2013 10:30:37 +0100
From: Marcus Meissner <meissner@...e.de>
To: oss-security@...ts.openwall.com
Subject: Re: CVE request: Linux kernel: net: memory leak in
recvmsg handler msg_name & msg_namelen logic
On Tue, Dec 10, 2013 at 01:00:43PM +0530, P J P wrote:
> Hello,
>
> Linux kernel built with the networking support(CONFIG_NET) is vulnerable to
> an information leakage flaw in the socket layer. It could occur while doing
> recvmsg(2), recvfrom(2) socket calls. It occurs due to improperly
> initialised msg_name & msg_namelen message header parameters.
>
> A user/program could use this flaw to leak kernel memory bytes.
>
> Upstream fix:
> -------------
> -> https://git.kernel.org/linus/f3d3342602f8bcbf37d7c46641cb9bca7618eb1c
>
> Reference:
> ----------
> -> https://bugzilla.redhat.com/show_bug.cgi?id=1039845
CVE-2013-6405 covers parts of that already I think and could be extended?
Ciao, Marcus
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