PT-2009-5131 · Linux · Linux Kernel

Hiroshi Shimamoto · Published 2009-08-14 · Updated 2017-08-17 · CVE-2009-2767

Positive Technologies (AI Summary)

CVSS v2.0

7.2

High

Base vector

AV:L/AC:L/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 2.6.31-rc6

Description The issue allows local users to cause a denial of service or possibly gain privileges via a specific clock nanosleep call that triggers a NULL pointer dereference. This is related to the init posix timers function in kernel/posix-timers.c.

Recommendations For versions prior to 2.6.31-rc6, update to version 2.6.31-rc6 or later to resolve the issue. As a temporary workaround, consider restricting access to the CLOCK MONOTONIC RAW clock to minimize the risk of exploitation.

Exploit

Fix

Buffer Overflow

Weakness Enumeration

CWE-119

Related Identifiers

CVE-2009-2767

Affected Products

Linux Kernel

References · 12

• 🔥 https://exploit-db.com/exploits/33148 · Exploit
• http://vupen.com/english/advisories/2009/2197 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2009-2767 · Security Note
• http://lkml.org/lkml/2009/8/4/28 · Patch
• http://ubuntu.com/usn/USN-852-1 · Vendor Advisory
• http://secunia.com/advisories/36200 · Vendor Advisory
• http://lkml.org/lkml/2009/8/4/40 · Patch
• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=70d715fd0597f18528f389b5ac59102263067744 · Note
• http://secunia.com/advisories/37105 · Note
• http://openwall.com/lists/oss-security/2009/08/06/2 · Note
• https://exchange.xforce.ibmcloud.com/vulnerabilities/52317 · Note
• http://kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.31-rc6 · Note