CVE-2007-3642 Information

Description

The decode_choice function in net/netfilter/nf_conntrack_h323_asn1.c in the Linux kernel before 2.6.20.15 2.6.21.x before 2.6.21.6 and before 2.6.22 allows remote attackers to cause a denial of service (crash) via an encoded out-of-range index value for a choice field which triggers a NULL pointer dereference.

Reference

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=25845b5155b55cd77e42655ec24161ba3feffa47 http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.20.15 http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.21.6 http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.22 http://osvdb.org/37117 http://secunia.com/advisories/25955 http://secunia.com/advisories/26450 http://secunia.com/advisories/27212 http://www.debian.org/security/2007/dsa-1356 http://www.mandriva.com/security/advisories?name=MDKSA-2007:195 http://www.securityfocus.com/bid/24818 http://www.ubuntu.com/usn/usn-510-1 http://www.vupen.com/english/advisories/2007/2466