Use-after-free vulnerability in net/ipv4/tcp_input.c in the Linux kernel 2.6 before 2.6.20, when IPV6_RECVPKTINFO is set on a listening socket, allows remote attackers to cause a denial of service (kernel panic) via a SYN packet while the socket is in a listening (TCP_LISTEN) state, which is not properly handled and causes the skb structure to be freed.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9878
http://www.vmware.com/security/advisories/VMSA-2011-0009.html
http://www.securitytracker.com/id?1023992
http://www.securityfocus.com/bid/39016
http://www.redhat.com/support/errata/RHSA-2010-0882.html
http://www.redhat.com/support/errata/RHSA-2010-0439.html
http://www.redhat.com/support/errata/RHSA-2010-0424.html
http://www.redhat.com/support/errata/RHSA-2010-0394.html
http://www.redhat.com/support/errata/RHSA-2010-0380.html
http://www.openwall.com/lists/oss-security/2010/03/29/1
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.20
http://support.avaya.com/css/P8/documents/100090459
http://secunia.com/advisories/39652
http://git.kernel.org/linus/fb7e2399ec17f1004c0e0ccfd17439f8759ede01