Linux Kernel decode_choices function contains DoS Vulnerability

Affected Systems:
Linux kernel 2.6.x

Unaffected system:
Linux kernel 2.6.22
Linux kernel 2.6.21.6
Linux kernel 2.6.000015

Description:
Linux Kernel is the Kernel used by open source Linux.

Linux Kernel NetFilter has a vulnerability in processing malformed data. Remote attackers may exploit this vulnerability to cause Kernel crash and cause DOS.

The decode_choice () function in the net/netfilter/bf_conntrack_h323_asn1.c file of Linux Kernel does not properly process the encoding selection still in the fixed size bit domain, allowing users to access undefined bytes (NULL pointer) this will cause a denial of service.

Vendor patch: Linux
The current manufacturer has released a patch to fix this security problem, please download to the vendor's home page: http://www.kernel.org/