|Bugzilla:||563781: CVE-2010-0437 kernel: ipv6: fix ip6_dst_lookup_tail() NULL pointer dereference|
The MITRE CVE dictionary describes this issue as:
The ip6_dst_lookup_tail function in net/ipv6/ip6_output.c in the Linux kernel before 2.6.27 does not properly handle certain circumstances involving an IPv6 TUN network interface and a large number of neighbors, which allows attackers to cause a denial of service (NULL pointer dereference and OOPS) or possibly have unspecified other impact via unknown vectors.
Red Hat is aware of this issue and is tracking it via the following bug:
This issue did not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 3 and 4, as they do not include support for Optimistic Duplicate Address Detection (DAD) in IPv6. This was addressed in Red Hat Enterprise Linux 5 via https://rhn.redhat.com/errata/RHSA-2010-9419.html. A future update in Red Hat Enterprise MRG may address this flaw.
CVSS v2 metrics
|Access Vector:||Adjacent Network|
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
Red Hat security errata
|MRG Grid for RHEL 5 Server (kernel-rt)||RHSA-2010:0161||March 23, 2010|
|Red Hat Enterprise Linux EUS (v. 5.2 server) (kernel)||RHSA-2010:0148||March 17, 2010|
|Red Hat Enterprise Linux EUS (v. 5.3 server) (kernel)||RHSA-2010:0149||March 17, 2010|
|Red Hat Enterprise Linux version 5 (kernel)||RHSA-2010:0147||March 17, 2010|
This page is generated automatically and has not been checked for errors or omissions.
For clarification or corrections please contact the Red Hat Security Response Team.