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Message-ID: <20130308032348.GC20032@dhcp-25-225.brq.redhat.com>
Date: Fri, 8 Mar 2013 04:23:49 +0100
From: Petr Matousek <pmatouse@...hat.com>
To: oss-security@...ts.openwall.com
Cc: spender@...ecurity.net, Kurt Seifried <kseifrie@...hat.com>
Subject: CVE Request -- Linux kernel: sctp: SCTP_GET_ASSOC_STATS stack
overflow
A local user could use the missing size check in
sctp_getsockopt_assoc_stats() function to escalate their privileges. On
x86 this might be mitigated by destination object size check as the
destination size is known at compile time.
Upstream fix:
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=726bc6b0
Introduced by:
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=196d6759
Introduced in:
v3.8-rc1
References:
https://twitter.com/grsecurity/status/309805924749541376
http://grsecurity.net/~spender/sctp.c
Thanks,
--
Petr Matousek / Red Hat Security Response Team
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