CVE-2012-2119
Published: 19 April 2012
Buffer overflow in the macvtap device driver in the Linux kernel before 3.4.5, when running in certain configurations, allows privileged KVM guest users to cause a denial of service (crash) via a long descriptor with a long vector length.
From the Ubuntu Security Team
A flaw was discovered in the Linux kernel's macvtap device driver, which is used in KVM (Kernel-based Virtual Machine) to create a network bridge between host and guest. A privleged user in a guest could exploit this flaw to crash the host, if the vhost_net module is loaded with the experimental_zcopytx option enabled.
Notes
Author | Note |
---|---|
apw | email thread discussing the patch does not conclude on a patch as yet nothing obviously matching it has hit mainline yet a second patch set was pushed under the thread below and appears to be making its way into v3.5 http://www.spinics.net/lists/netdev/msg197132.html Patch set seems to have hit ending at the sha1 below, it is possible we need all four patches: b92946e2919134ebe2a4083e4302236295ea2a73 |
Priority
Status
Package | Release | Status |
---|---|---|
linux Launchpad, Ubuntu, Debian |
hardy |
Not vulnerable
|
lucid |
Not vulnerable
|
|
natty |
Not vulnerable
|
|
oneiric |
Not vulnerable
|
|
precise |
Not vulnerable
|
|
upstream |
Released
(3.5~rc1)
|
|
Patches: Introduced by 97bc3633bec7ed0fdfbda6b9cf86c51e4f58f8e2 Introduced by 97bc3633bec7ed0fdfbda6b9cf86c51e4f58f8e2 Introduced by 97bc3633bec7ed0fdfbda6b9cf86c51e4f58f8e2 Introduced by 97bc3633bec7ed0fdfbda6b9cf86c51e4f58f8e2 Introduced by 97bc3633bec7ed0fdfbda6b9cf86c51e4f58f8e2 |
||
linux-armadaxp Launchpad, Ubuntu, Debian |
hardy |
Does not exist
|
lucid |
Does not exist
|
|
natty |
Does not exist
|
|
oneiric |
Does not exist
|
|
precise |
Released
(3.2.0-1606.9)
|
|
upstream |
Released
(3.5~rc1)
|
|
linux-ec2 Launchpad, Ubuntu, Debian |
hardy |
Does not exist
|
lucid |
Not vulnerable
|
|
natty |
Does not exist
|
|
oneiric |
Does not exist
|
|
precise |
Does not exist
|
|
upstream |
Released
(3.5~rc1)
|
|
linux-fsl-imx51 Launchpad, Ubuntu, Debian |
hardy |
Does not exist
|
lucid |
Not vulnerable
|
|
natty |
Does not exist
|
|
oneiric |
Does not exist
|
|
precise |
Does not exist
|
|
upstream |
Released
(3.5~rc1)
|
|
linux-lts-backport-maverick Launchpad, Ubuntu, Debian |
hardy |
Does not exist
|
lucid |
Ignored
(end of life)
|
|
natty |
Does not exist
|
|
oneiric |
Does not exist
|
|
precise |
Does not exist
|
|
upstream |
Released
(3.5~rc1)
|
|
linux-lts-backport-natty Launchpad, Ubuntu, Debian |
hardy |
Does not exist
|
lucid |
Not vulnerable
|
|
natty |
Does not exist
|
|
oneiric |
Does not exist
|
|
precise |
Does not exist
|
|
upstream |
Released
(3.5~rc1)
|
|
linux-lts-backport-oneiric Launchpad, Ubuntu, Debian |
hardy |
Does not exist
|
lucid |
Not vulnerable
|
|
natty |
Does not exist
|
|
oneiric |
Does not exist
|
|
precise |
Does not exist
|
|
upstream |
Released
(3.5~rc1)
|
|
linux-mvl-dove Launchpad, Ubuntu, Debian |
hardy |
Does not exist
|
lucid |
Ignored
(end of life)
|
|
natty |
Does not exist
|
|
oneiric |
Does not exist
|
|
precise |
Does not exist
|
|
upstream |
Released
(3.5~rc1)
|
|
linux-ti-omap4 Launchpad, Ubuntu, Debian |
hardy |
Does not exist
|
lucid |
Does not exist
|
|
natty |
Not vulnerable
|
|
oneiric |
Not vulnerable
|
|
precise |
Not vulnerable
|
|
upstream |
Released
(3.5~rc1)
|
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-2119
- http://www.openwall.com/lists/oss-security/2012/04/19/14
- http://marc.info/?l=linux-netdev&m=133455718001608&w=2
- http://www.spinics.net/lists/netdev/msg197132.html
- https://ubuntu.com/security/notices/USN-1529-1
- https://ubuntu.com/security/notices/USN-1514-1
- NVD
- Launchpad
- Debian