TITLE:
Linux Kernel SCTP Denial of Service Vulnerabilities

SECUNIA ADVISORY ID:
SA19990

VERIFY ADVISORY:
http://secunia.com/advisories/19990/

CRITICAL:
Moderately critical

IMPACT:
DoS

WHERE:
>From remote

OPERATING SYSTEM:
Linux Kernel 2.6.x
http://secunia.com/product/2719/

DESCRIPTION:
Mu Security research team has reported two vulnerabilities in Linux
Kernel, which can be exploited by malicious people to cause a DoS
(Denial of Service).

1) An incorrect use of state table entries in the SCTP code when
certain ECNE chunks are received in CLOSED state can be exploited to
cause kernel panic via a specially crafted packet.

2) An error in the handling of incoming IP-fragmented SCTP control
chunks can be exploited to cause kernel panic via specially crafted
packets.

The vulnerabilities have been reported in version 2.6.16. Other
versions may also be affected.

SOLUTION:
The vulnerabilities have been fixed in the CVS repositories, and will
reportedly be fixed in version 2.6.17.

PROVIDED AND/OR DISCOVERED BY:
Mu Security research team

ORIGINAL ADVISORY:
http://labs.musecurity.com/advisories/MU-200605-01.txt

Kernel.org:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=35d63edb1c807bc5317e49592260e84637bc432e
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=62b08083ec3dbfd7e533c8d230dd1d8191a6e813

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