National Cyber Awareness System
Vulnerability Summary for CVE-2009-2767
Original release date:08/14/2009
Last revised:03/19/2012
Source:
US-CERT/NIST
Overview
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.
Impact
CVSS Severity (version 2.0):
Impact Subscore:
10.0
Exploitability Subscore:
3.9
CVSS Version 2 Metrics:
Access Vector: Locally exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type:Provides administrator access, Allows complete confidentiality, integrity, and availability violation; Allows unauthorized disclosure of information; Allows disruption of service
Official Statement from Red Hat (08/18/2009)
Not vulnerable. This issue only affected kernels version 2.6.28-rc1 and later.
Therefore this issue did not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 3, 4, 5 or Red Hat Enterprise MRG..
References to Advisories, Solutions, and Tools
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External Source: MLIST
Name: [linux-kernel] 20090804 Re: [PATCH] posix-timers: fix oops in clock_nanosleep() with CLOCK_MONOTONIC_RAW
Type: Patch Information
External Source: MLIST
Name: [linux-kernel] 20090804 Re: [PATCH] posix-timers: fix oops in clock_nanosleep() with CLOCK_MONOTONIC_RAW
Type: Patch Information
External Source: XF
Name: linux-kernel-clocknanosleep-priv-escalation(52317)
External Source: VUPEN
Name: ADV-2009-2197
Type: Advisory
External Source: UBUNTU
Name: USN-852-1
External Source: MLIST
Name: [oss-security] 20090806 CVE request: kernel: clock_nanosleep() with CLOCK_MONOTONIC_RAW NULL pointer dereference
External Source: CONFIRM
Name: http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.31-rc6
External Source: SECUNIA
Name: 37105
External Source: SECUNIA
Name: 36200
Type: Advisory
External Source: CONFIRM
Name: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=70d715fd0597f18528f389b5ac59102263067744
