CVE-2011-4080

Publication date 24 May 2012

Last updated 24 July 2024

Ubuntu priority

Low

Why this priority?

The sysrq_sysctl_handler function in kernel/sysctl.c in the Linux kernel before 2.6.39 does not require the CAP_SYS_ADMIN capability to modify the dmesg_restrict value, which allows local users to bypass intended access restrictions and read the kernel ring buffer by leveraging root privileges, as demonstrated by a root user in a Linux Containers (aka LXC) environment.

Read the notes from the security team

Status

No maintained releases are affected by this CVE.

Package Ubuntu Release Status
linux 12.04 LTS precise
Not affected
11.10 oneiric
Not affected
11.04 natty
Not affected
10.10 maverick
Not affected
10.04 LTS lucid
Not affected
8.04 LTS hardy
Not affected
linux-armadaxp 12.04 LTS precise
Not affected
11.10 oneiric Not in release
11.04 natty Not in release
10.04 LTS lucid Not in release
8.04 LTS hardy Not in release
linux-ec2 12.04 LTS precise Not in release
11.10 oneiric Not in release
11.04 natty Not in release
10.10 maverick Ignored end of life
10.04 LTS lucid
Not affected
8.04 LTS hardy Not in release
linux-fsl-imx51 12.04 LTS precise Not in release
11.10 oneiric Not in release
11.04 natty Not in release
10.10 maverick Not in release
10.04 LTS lucid
Not affected
8.04 LTS hardy Not in release
linux-lts-backport-maverick 12.04 LTS precise Not in release
11.10 oneiric Not in release
11.04 natty Not in release
10.10 maverick Not in release
10.04 LTS lucid
Not affected
8.04 LTS hardy Not in release
linux-lts-backport-natty 12.04 LTS precise Not in release
11.10 oneiric Not in release
11.04 natty Not in release
10.10 maverick Not in release
10.04 LTS lucid
Not affected
8.04 LTS hardy Not in release
linux-lts-backport-oneiric 12.04 LTS precise Not in release
11.10 oneiric Not in release
11.04 natty Not in release
10.10 maverick Not in release
10.04 LTS lucid
Not affected
8.04 LTS hardy Not in release
linux-mvl-dove 12.04 LTS precise Not in release
11.10 oneiric Not in release
11.04 natty Not in release
10.10 maverick
Not affected
10.04 LTS lucid Ignored end of life
8.04 LTS hardy Not in release
linux-ti-omap4 12.04 LTS precise
Not affected
11.10 oneiric
Not affected
11.04 natty
Not affected
10.10 maverick
Not affected
10.04 LTS lucid Not in release
8.04 LTS hardy Not in release

Notes

tyhicks

There was some talk in the oss-sec thread about rejecting this CVE. It isn’t clear if it was rejected or not.

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
linux