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Bug 281180 (CVE-2009-2767) - Kernel: "clock_nanosleep()" NULL Pointer Dereference (CVE-2009-2767)
Summary: Kernel: "clock_nanosleep()" NULL Pointer Dereference (CVE-2009-2767)
Status: RESOLVED FIXED
Alias: CVE-2009-2767
Product: Gentoo Security
Classification: Unclassified
Component: Kernel (show other bugs)
Hardware: All Linux
: High normal (vote)
Assignee: Gentoo Security
URL: http://git.kernel.org/?p=linux/kernel...
Whiteboard: [linux <2.6.30.5]
Keywords:
Depends on:
Blocks:
 
Reported: 2009-08-12 07:18 UTC by cilly
Modified: 2013-09-15 18:38 UTC (History)
2 users (show)

See Also:
Package list:
Runtime testing required: ---


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Description cilly 2009-08-12 07:18:35 UTC
TITLE:
Linux Kernel "clock_nanosleep()" NULL Pointer Dereference

SECUNIA ADVISORY ID:
SA36200

VERIFY ADVISORY:
http://secunia.com/advisories/36200/

DESCRIPTION:
A vulnerability has been reported in the Linux Kernel, which can be
exploited by malicious, local users to cause a DoS (Denial of
Service) and potentially gain escalated privileges.

The vulnerability is caused due to an error within the
"clock_nanosleep()" function in kernel/posix-timers.c. This can be
exploited to trigger a NULL-pointer dereference by calling
"clock_nanosleep()" with a clock id equal to CLOCK_MONOTONIC_RAW.

The vulnerability is reported in versions 2.6.28 and later. Other
versions may also be affected.

SOLUTION:
Fixed in the GIT repository:
http://git.kernel.org/linus/70d715fd0597f18528f389b5ac59102263067744

PROVIDED AND/OR DISCOVERED BY:
Hiroshi Shimamoto

ORIGINAL ADVISORY:
http://lkml.org/lkml/2009/8/4/28
http://lkml.org/lkml/2009/8/4/40
Comment 1 Alex Legler (RETIRED) archtester gentoo-dev Security 2009-08-14 22:20:04 UTC
CVE-2009-2767 (http://nvd.nist.gov/nvd.cfm?cvename=CVE-2009-2767):
  The init_posix_timers function in kernel/posix-timers.c in the Linux
  kernel before 2.6.31-rc6 allows local users to cause a denial of
  service (OOPS) or possibly gain privileges via a CLOCK_MONOTONIC_RAW
  clock_nanosleep call that triggers a NULL pointer dereference.