Secunia Security Advisory - Zhongling Wen has reported a vulnerability in the Linux Kernel, which can be exploited by malicious people to cause a DoS (Denial of Service).
2813c63e47f6aea41f45094eda100bffe292f3433684cb0699f677dae3d09a47
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TITLE:
Linux Kernel "decode_choices()" Denial of Service
SECUNIA ADVISORY ID:
SA25955
VERIFY ADVISORY:
http://secunia.com/advisories/25955/
CRITICAL:
Moderately critical
IMPACT:
DoS
WHERE:
>From remote
OPERATING SYSTEM:
Linux Kernel 2.6.x
http://secunia.com/product/2719/
DESCRIPTION:
Zhongling Wen has reported a vulnerability in the Linux Kernel, which
can be exploited by malicious people to cause a DoS (Denial of
Service).
The vulnerability is caused due to an error within the
"decode_choice()" function in net/netfilter/bf_conntrack_h323_asn1.c
when handling choices that are still encoded in the fixed-size
bitfield. This can be exploited to cause an access to undefined
types, resulting in a crash.
SOLUTION:
Update to version 2.6.21.6, 2.6.20.15, or 2.6.22.
PROVIDED AND/OR DISCOVERED BY:
Zhongling Wen
ORIGINAL ADVISORY:
http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.22
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