CVE-2011-2479

Published: 06 October 2011

The Linux kernel before 2.6.39 does not properly create transparent huge pages in response to a MAP_PRIVATE mmap system call on /dev/zero, which allows local users to cause a denial of service (system crash) via a crafted application.

From the Ubuntu security team

It was discovered that an mmap() call with the MAP_PRIVATE flag on "/dev/zero" was incorrectly handled. A local attacker could exploit this to crash the system, leading to a denial of service.

Priority

Medium

CVSS 3 base score: 5.5

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.39~rc6)
Patches:
Introduced by 71e3aac0724ffe8918992d76acfe3aad7d8724a5
Fixed by 78f11a255749d09025f54d4e2df4fbcb031530e2
linux-ec2
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.39~rc6)
linux-fsl-imx51
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.39~rc6)
linux-lts-backport-maverick
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.39~rc6)
linux-lts-backport-natty
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.39~rc6)
linux-lts-backport-oneiric
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.39~rc6)
linux-mvl-dove
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.39~rc6)
linux-ti-omap4
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.39~rc6)