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CVE-2011-0999

Published: 23 February 2011

mm/huge_memory.c in the Linux kernel before 2.6.38-rc5 does not prevent creation of a transparent huge page (THP) during the existence of a temporary stack for an exec system call, which allows local users to cause a denial of service (memory consumption) or possibly have unspecified other impact via a crafted application.

From the Ubuntu Security Team

It was discoverd that transparent huge page support did not correctly handle temporary stacks. A local attacker could exploit this to crash the system, leading to a denial of service.

Notes

AuthorNote
jdstrand
THP first introduced in 2009
(http://article.gmane.org/gmane.linux.kernel.mm/40182), so Ubuntu 6.06
not affected
apw
THP was actually introduced in 2.6.38~rc1

Priority

Medium

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
dapper Does not exist

hardy Not vulnerable

karmic Ignored

lucid Not vulnerable

maverick Not vulnerable

natty
Released (2.6.38-4.31)
upstream
Released (2.6.38~rc5)
Patches:
Introduced by

71e3aac0724ffe8918992d76acfe3aad7d8724a5

Fixed by a7d6e4ecdb7648478ddec76d30d87d03d6e22b31
linux-ec2
Launchpad, Ubuntu, Debian
dapper Does not exist

hardy Does not exist

karmic Ignored
(end of life)
lucid Not vulnerable

maverick Ignored
(end of life)
natty Does not exist

upstream
Released (2.6.38~rc5)
linux-fsl-imx51
Launchpad, Ubuntu, Debian
dapper Does not exist

hardy Does not exist

karmic Ignored
(end of life)
lucid Not vulnerable

maverick Does not exist

natty Does not exist

upstream
Released (2.6.38~rc5)
linux-lts-backport-maverick
Launchpad, Ubuntu, Debian
dapper Does not exist

hardy Does not exist

karmic Does not exist

lucid Not vulnerable

maverick Does not exist

natty Does not exist

upstream
Released (2.6.38~rc5)
linux-lts-backport-natty
Launchpad, Ubuntu, Debian
hardy Does not exist

lucid Not vulnerable
(2.6.38-4.31~lucid1)
maverick Does not exist

natty Does not exist

upstream
Released (2.6.38~rc5)
linux-mvl-dove
Launchpad, Ubuntu, Debian
dapper Does not exist

hardy Does not exist

karmic Ignored
(end of life)
lucid Not vulnerable

maverick Not vulnerable

natty Does not exist

upstream
Released (2.6.38~rc5)
linux-source-2.6.15
Launchpad, Ubuntu, Debian
dapper Not vulnerable

hardy Does not exist

karmic Does not exist

lucid Does not exist

maverick Does not exist

natty Does not exist

upstream
Released (2.6.38~rc5)
linux-ti-omap4
Launchpad, Ubuntu, Debian
dapper Does not exist

hardy Does not exist

karmic Does not exist

lucid Does not exist

maverick Not vulnerable

natty
Released (2.6.38-1203.4)
upstream
Released (2.6.38~rc5)