CVE-2011-4611

Published: 15 December 2011

Integer overflow in the perf_event_interrupt function in arch/powerpc/kernel/perf_event.c in the Linux kernel before 2.6.39 on powerpc platforms allows local users to cause a denial of service (unhandled performance monitor exception) via vectors that trigger certain outcomes of performance events.

From the Ubuntu security team

Maynard Johnson discovered that on POWER7, certain speculative events may raise a performance monitor exception. A local attacker could exploit this to crash the system, leading to a denial of service.

Priority

Low

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.39~rc1)
Patches:
Introduced by 4574910e5087085a1f330ff8373cee4503f5c77c
Fixed by 0837e3242c73566fc1c0196b4ec61779c25ffc93
linux-armadaxp
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.39~rc1)
linux-ec2
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.39~rc1)
linux-fsl-imx51
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.39~rc1)
linux-lts-backport-maverick
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.39~rc1)
linux-lts-backport-natty
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.39~rc1)
linux-lts-backport-oneiric
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.39~rc1)
linux-mvl-dove
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.39~rc1)
linux-ti-omap4
Launchpad, Ubuntu, Debian
Upstream
Released (2.6.39~rc1)