CVE-2011-4326

Published: 23 November 2011

The udp6_ufo_fragment function in net/ipv6/udp.c in the Linux kernel before 2.6.39, when a certain UDP Fragmentation Offload (UFO) configuration is enabled, allows remote attackers to cause a denial of service (system crash) by sending fragmented IPv6 UDP packets to a bridge device.

From the Ubuntu security team

A bug was found in the way headroom check was performed in udp6_ufo_fragment() function. A remote attacker could use this flaw to crash the system.

Priority

Medium

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.39~rc6)
Ubuntu 14.04 ESM (Trusty Tahr) Not vulnerable
(3.11.0-12.19)
Patches:
Introduced by ba73542585a4a3c8a708f502e62e6e63dd74b66c
Fixed by a9cf73ea7ff78f52662c8658d93c226effbbedde
linux-armadaxp
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.39~rc6)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-ec2
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.39~rc6)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-flo
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.39~rc6)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was not-affected [3.4.0-1.3])
linux-fsl-imx51
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.39~rc6)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-goldfish
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.39~rc6)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was not-affected [3.4.0-1.9])
linux-grouper
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.39~rc6)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was not-affected [3.1.10-8.28])
linux-lts-backport-maverick
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.39~rc6)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-lts-backport-natty
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.39~rc6)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-lts-backport-oneiric
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.39~rc6)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-lts-quantal
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.39~rc6)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-lts-raring
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.39~rc6)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-lts-saucy
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.39~rc6)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-lts-trusty
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.39~rc6)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-lts-utopic
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.39~rc6)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was not-affected [3.16.0-25.33~14.04.2])
linux-lts-vivid
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.39~rc6)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was not-affected [3.19.0-18.18~14.04.1])
linux-maguro
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.39~rc6)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was not-affected [3.0.0-3.18])
linux-mako
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.39~rc6)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was not-affected [3.4.0-3.21])
linux-manta
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.39~rc6)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was not-affected [3.4.0-4.19])
linux-mvl-dove
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.39~rc6)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-raspi2
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.39~rc6)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-ti-omap4
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.39~rc6)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist