CVE-2011-2942
Published: 21 October 2011
A certain Red Hat patch to the __br_deliver function in net/bridge/br_forward.c in the Linux kernel 2.6.18 on Red Hat Enterprise Linux (RHEL) 5 allows remote attackers to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact by leveraging connectivity to a network interface that uses an Ethernet bridge device.
From the Ubuntu Security Team
Qianfeng Zhang discovered that the bridge networking interface incorrectly handled certain network packets. A remote attacker could exploit this to crash the system, leading to a denial of service.
Notes
Author | Note |
---|---|
apw | Redhat claims the fix below fixes the issue: bridge: fix use after free in __br_deliver this looks to be fixed upstream by: bridge: Fix netpoll support only a very small part of this delivering the actual fix. This was introduced in the patch below: netpoll: add generic support for bridge and bonding devices For maverick netpoll is re-disabled for bridge by the commit below: bridge: Partially disable netpoll support |
Priority
Status
Package | Release | Status |
---|---|---|
linux Launchpad, Ubuntu, Debian |
hardy |
Not vulnerable
|
lucid |
Not vulnerable
|
|
maverick |
Not vulnerable
|
|
natty |
Not vulnerable
(2.6.37-2.9)
|
|
oneiric |
Not vulnerable
(2.6.39-0.0)
|
|
precise |
Not vulnerable
(3.1.0-1.1)
|
|
upstream |
Released
(2.6.36~rc1)
|
|
Patches: vendor: https://rhn.redhat.com/errata/RHSA-2011-1386.html Introduced by 0e34e93177fb1f642cab080e0bde664c06c7183a |
||
linux-armadaxp Launchpad, Ubuntu, Debian |
hardy |
Does not exist
|
lucid |
Does not exist
|
|
natty |
Does not exist
|
|
oneiric |
Does not exist
|
|
precise |
Not vulnerable
(3.2.0-1600.1)
|
|
upstream |
Released
(2.6.36~rc1)
|
|
linux-ec2 Launchpad, Ubuntu, Debian |
hardy |
Does not exist
|
lucid |
Not vulnerable
|
|
maverick |
Ignored
(end of life)
|
|
natty |
Does not exist
|
|
oneiric |
Does not exist
|
|
precise |
Does not exist
|
|
upstream |
Released
(2.6.36~rc1)
|
|
linux-fsl-imx51 Launchpad, Ubuntu, Debian |
hardy |
Does not exist
|
lucid |
Not vulnerable
|
|
maverick |
Does not exist
|
|
natty |
Does not exist
|
|
oneiric |
Does not exist
|
|
precise |
Does not exist
|
|
upstream |
Released
(2.6.36~rc1)
|
|
linux-lts-backport-maverick Launchpad, Ubuntu, Debian |
hardy |
Does not exist
|
lucid |
Not vulnerable
|
|
maverick |
Does not exist
|
|
natty |
Does not exist
|
|
oneiric |
Does not exist
|
|
precise |
Does not exist
|
|
upstream |
Released
(2.6.36~rc1)
|
|
linux-lts-backport-natty Launchpad, Ubuntu, Debian |
hardy |
Does not exist
|
lucid |
Released
(2.6.38-1.27~lucid1)
|
|
maverick |
Does not exist
|
|
natty |
Does not exist
|
|
oneiric |
Does not exist
|
|
precise |
Does not exist
|
|
upstream |
Released
(2.6.36~rc1)
|
|
linux-lts-backport-oneiric Launchpad, Ubuntu, Debian |
hardy |
Does not exist
|
lucid |
Released
(3.0.0-5.6~lucid1)
|
|
maverick |
Does not exist
|
|
natty |
Does not exist
|
|
oneiric |
Does not exist
|
|
precise |
Does not exist
|
|
upstream |
Released
(2.6.36~rc1)
|
|
linux-mvl-dove Launchpad, Ubuntu, Debian |
hardy |
Does not exist
|
lucid |
Not vulnerable
|
|
maverick |
Not vulnerable
|
|
natty |
Does not exist
|
|
oneiric |
Does not exist
|
|
precise |
Does not exist
|
|
upstream |
Released
(2.6.36~rc1)
|
|
linux-ti-omap4 Launchpad, Ubuntu, Debian |
hardy |
Does not exist
|
lucid |
Does not exist
|
|
maverick |
Not vulnerable
|
|
natty |
Not vulnerable
(2.6.38-1201.2)
|
|
oneiric |
Not vulnerable
(2.6.38-1309.13)
|
|
precise |
Not vulnerable
(3.0.0-1401.2)
|
|
upstream |
Released
(2.6.36~rc1)
|