CVE-2011-2183

Published: 6 October 2011

Race condition in the scan_get_next_rmap_item function in mm/ksm.c in the Linux kernel before 2.6.39.3, when Kernel SamePage Merging (KSM) is enabled, allows local users to cause a denial of service (NULL pointer dereference) or possibly have unspecified other impact via a crafted application.

From the Ubuntu Security Team

Andrea Righi discovered a race condition in the KSM memory merging support. If KSM was being used, a local attacker could exploit this to crash the system, leading to a denial of service.

Priority

Status

Package	Release	Status
linux Launchpad, Ubuntu, Debian	hardy	Not vulnerable
	lucid	Released (2.6.32-34.77)
	maverick	Released (2.6.35-31.62)
	natty	Released (2.6.38-13.52)
	oneiric	Not vulnerable (3.0-2.3)
	precise	Not vulnerable (3.1.0-1.1)
	quantal	Not vulnerable
	saucy	Not vulnerable
	trusty	Not vulnerable (3.11.0-12.19)
	upstream	Released (3.0~rc4)
	Patches: Introduced by f8af4da3b4c14e7267c4ffb952079af3912c51c5 Fixed by 2b472611a32a72f4a118c069c2d62a1a3f087afd
linux-ec2 Launchpad, Ubuntu, Debian	hardy	Does not exist
	lucid	Released (2.6.32-318.38)
	maverick	Ignored (binary supplied by "linux" now)
	natty	Does not exist
	oneiric	Does not exist
	precise	Does not exist
	quantal	Does not exist
	saucy	Does not exist
	trusty	Does not exist
	upstream	Released (3.0~rc4)
linux-flo Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Does not exist
	quantal	Does not exist
	saucy	Does not exist
	trusty	Does not exist (trusty was not-affected [3.4.0-1.3])
	upstream	Released (3.0~rc4)
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
	quantal	Does not exist
	saucy	Does not exist
	trusty	Does not exist
	upstream	Released (3.0~rc4)
linux-goldfish Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Does not exist
	quantal	Does not exist
	saucy	Ignored
	trusty	Does not exist (trusty was not-affected [3.4.0-1.7])
	upstream	Released (3.0~rc4)
linux-grouper Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Does not exist
	quantal	Does not exist
	saucy	Ignored
	trusty	Does not exist (trusty was not-affected [3.1.10-8.28])
	upstream	Released (3.0~rc4)
linux-lts-backport-maverick Launchpad, Ubuntu, Debian	hardy	Does not exist
	lucid	Released (2.6.35-31.62~lucid1)
	maverick	Does not exist
	natty	Does not exist
	oneiric	Does not exist
	precise	Does not exist
	quantal	Does not exist
	saucy	Does not exist
	trusty	Does not exist
	upstream	Released (3.0~rc4)
linux-lts-backport-natty Launchpad, Ubuntu, Debian	hardy	Does not exist
	lucid	Released (2.6.38-13.52~lucid1)
	maverick	Does not exist
	natty	Does not exist
	oneiric	Does not exist
	precise	Does not exist
	quantal	Does not exist
	saucy	Does not exist
	trusty	Does not exist
	upstream	Released (3.0~rc4)
linux-lts-backport-oneiric 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
	quantal	Does not exist
	saucy	Does not exist
	trusty	Does not exist
	upstream	Released (3.0~rc4)
linux-maguro Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Does not exist
	quantal	Does not exist
	saucy	Ignored
	trusty	Does not exist (trusty was not-affected [3.0.0-3.18])
	upstream	Released (3.0~rc4)
linux-mako Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Does not exist
	quantal	Does not exist
	saucy	Ignored
	trusty	Does not exist (trusty was not-affected [3.4.0-3.21])
	upstream	Released (3.0~rc4)
linux-manta Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Does not exist
	quantal	Does not exist
	saucy	Ignored
	trusty	Does not exist (trusty was not-affected [3.4.0-4.19])
	upstream	Released (3.0~rc4)
linux-mvl-dove Launchpad, Ubuntu, Debian	hardy	Does not exist
	lucid	Released (2.6.32-218.35)
	maverick	Released (2.6.32-418.35)
	natty	Does not exist
	oneiric	Does not exist
	precise	Does not exist
	quantal	Does not exist
	saucy	Does not exist
	trusty	Does not exist
	upstream	Released (3.0~rc4)
linux-ti-omap4 Launchpad, Ubuntu, Debian	hardy	Does not exist
	lucid	Does not exist
	maverick	Released (2.6.35-903.26)
	natty	Released (2.6.38-1209.17)
	oneiric	Not vulnerable (3.0.0-1200.1)
	precise	Not vulnerable (3.0.0-1401.2)
	quantal	Not vulnerable
	saucy	Not vulnerable
	trusty	Does not exist
	upstream	Released (3.0~rc4)

References

Bugs

Join the discussion

Canonical is offering Expanded Security Maintenance

Canonical is offering Ubuntu Expanded Security Maintenance (ESM) for security fixes and essential packages.

Find out more about ESM ›

Security