kernel is vulnerable to denial of service (DoS). The vulnerability exists as a flaw allowed napi_reuse_skb() to be called on VLAN (virtual LAN) packets. An attacker on the local network could trigger this flaw by sending specially-crafted packets to a target system, possibly causing a denial of service.
rhn.redhat.com/errata/RHSA-2011-0927.html
www.redhat.com/support/errata/RHSA-2011-1090.html
www.redhat.com/support/errata/RHSA-2011-1106.html
www.securityfocus.com/bid/48907
www.securitytracker.com/id?1025853
access.redhat.com/errata/RHSA-2011:0927
access.redhat.com/errata/RHSA-2011:1090
access.redhat.com/errata/RHSA-2011:1106
access.redhat.com/errata/RHSA-2011:1189
access.redhat.com/errata/RHSA-2011:1253
access.redhat.com/security/cve/CVE-2011-1576
access.redhat.com/security/updates/classification/#important
bugzilla.redhat.com/show_bug.cgi?id=695173
docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5/html/5.6_Technical_Notes/kernel.html#RHSA-2011-0927