CVE-2009-2767
CVE-2009-2767 is a high-severity vulnerability in Linux Kernel with a CVSS 2.0 base score of 7.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.
Key facts
- Severity: High (CVSS 2.0 base score 7.2)
- EPSS exploit prediction: 1% (50th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-119
- Affected product: Linux Kernel
- Published:
- Last modified:
Description
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.
Frequently asked questions
- What is 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.
- How severe is CVE-2009-2767?
- CVE-2009-2767 has a CVSS 2.0 base score of 7.2, rated high severity.
- Is CVE-2009-2767 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2009-2767?
- CVE-2009-2767 primarily affects Linux Kernel. In total, 79 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2009-2767?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2009-2767 published?
- CVE-2009-2767 was published on 2009-08-14 and last updated on 2026-06-16.
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=70d715fd0597f18528f389b5ac59102263067744
- http://lkml.org/lkml/2009/8/4/28
- http://lkml.org/lkml/2009/8/4/40
- http://secunia.com/advisories/36200
- http://secunia.com/advisories/37105
- http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.31-rc6
- http://www.openwall.com/lists/oss-security/2009/08/06/2
- http://www.ubuntu.com/usn/USN-852-1
- http://www.vupen.com/english/advisories/2009/2197
- https://exchange.xforce.ibmcloud.com/vulnerabilities/52317
Affected products (79)
- cpe:2.3:a:linux:kernel:2.6.24.7:*:*:*:*:*:*:*
- cpe:2.3:a:linux:kernel:2.6.25.15:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:-rc5:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.0:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.1:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.10:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.11:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.11.1:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.11.2:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.11.3:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.11.4:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.11.5:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.11.6:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.11.7:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.11.8:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.11.9:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.11.10:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.11.11:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.11.12:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.12:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.12.1:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.12.2:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.12.3:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.12.4:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.12.5:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.12.6:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.13:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.13.1:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.13.2:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.13.3:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.13.4:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.13.5:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.14:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.14.1:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.14.2:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.14.3:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.14.4:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.14.5:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.6.14.6:*:*:*:*:*:*:*
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