oss-security - CVE-2012-0207 kernel: igmp: Avoid zero delay when receiving odd mixture of IGMP queries

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Message-ID: <4F0BEA1C.4080609@redhat.com>
Date: Tue, 10 Jan 2012 15:34:52 +0800
From: Eugene Teo <eugene@...hat.com>
To: oss-security@...ts.openwall.com
CC: "Steven M. Christey" <coley@...us.mitre.org>
Subject: CVE-2012-0207 kernel: igmp: Avoid zero delay when receiving odd mixture
 of IGMP queries

Commit 5b7c84066733c5dfb0e4016d939757b38de189e4 ('ipv4: correct IGMP
behavior on v3 query during v2-compatibility mode') added yet another
case for query parsing, which can result in max_delay = 0.  Substitute
a value of 1, as in the usual v3 case.

Reported-by: Simon McVittie <smcv <at> debian.org>
References: http://bugs.debian.org/654876
Signed-off-by: Ben Hutchings <ben <at> decadent.org.uk>

http://article.gmane.org/gmane.linux.network/217256

Introduced in 5b7c8406 2.6.36-rc8

Thanks, Eugene

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