oss-security - CVE-2011-2525 kernel: kernel: net_sched: fix qdisc

Date: Tue, 12 Jul 2011 11:20:23 +0800
From: Eugene Teo <eugene@...hat.com>
To: oss-security@...ts.openwall.com
CC: "Steven M. Christey" <coley@...us.mitre.org>
Subject: CVE-2011-2525 kernel: kernel: net_sched: fix qdisc_notify()

tc_fill_qdisc() should not be called for builtin qdisc, or it
dereference a NULL pointer to get device ifindex.

References:
http://kerneltrap.org/mailarchive/linux-netdev/2010/5/21/6277805
https://bugzilla.redhat.com/CVE-2011-2525

Upstream commit:
http://git.kernel.org/linus/53b0f08042f04813cd1a7473dacd3edfacb28eb3

Thanks, Eugene

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