{"id":"CVE-2009-2767","url":"https://www.cyber-defence.io/tools/cve/CVE-2009-2767","generatedAt":"2026-10-27T18:47:57.041Z","title":"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…","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.","published":"2009-08-14T15:16:28.000Z","lastModified":"2026-06-16T23:10:11.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"2.0","score":7.2,"severity":"HIGH","vector":"AV:L/AC:L/Au:N/C:C/I:C/A:C"},"cwe":["CWE-119"],"affected":["linux/kernel","linux/linux kernel"],"epss":{"score":0.00742,"percentile":0.54396,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":1,"verified":true,"firstPublished":"2009-08-06","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":33148,"kind":"exploit","title":"Linux Kernel 2.6.x - 'posix-timers.c' Null Pointer Dereference Denial of Service","url":"https://www.exploit-db.com/exploits/33148","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/linux/dos/33148.c","file":"exploits/linux/dos/33148.c","published":"2009-08-06","added":"2009-08-06","updated":"2016-09-06","author":"Hiroshi Shimamoto","type":"dos","platform":"linux","port":null,"verified":true,"codes":["CVE-2009-2767","OSVDB-56822"],"tags":null,"aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":"https://www.securityfocus.com/bid/35976/info"}]},"verdict":{"level":"urgent","text":"A public exploit is published in Exploit-DB (verified) and the impact is high, while EPSS rates exploitation at 0.7%. Anyone can run this; patch or mitigate before the next change window and check exposed instances for signs of use."},"changes":[],"references":[{"url":"http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=70d715fd0597f18528f389b5ac59102263067744","source":"cve@mitre.org"},{"url":"http://lkml.org/lkml/2009/8/4/28","tags":["Patch"],"source":"cve@mitre.org"},{"url":"http://lkml.org/lkml/2009/8/4/40","tags":["Patch"],"source":"cve@mitre.org"},{"url":"http://secunia.com/advisories/36200","tags":["Vendor Advisory"],"source":"cve@mitre.org"},{"url":"http://secunia.com/advisories/37105","source":"cve@mitre.org"},{"url":"http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.31-rc6","source":"cve@mitre.org"},{"url":"http://www.openwall.com/lists/oss-security/2009/08/06/2","source":"cve@mitre.org"},{"url":"http://www.ubuntu.com/usn/USN-852-1","source":"cve@mitre.org"},{"url":"http://www.vupen.com/english/advisories/2009/2197","tags":["Vendor Advisory"],"source":"cve@mitre.org"},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/52317","source":"cve@mitre.org"},{"url":"http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=70d715fd0597f18528f389b5ac59102263067744","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lkml.org/lkml/2009/8/4/28","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lkml.org/lkml/2009/8/4/40","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/36200","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/37105","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.31-rc6","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2009/08/06/2","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.ubuntu.com/usn/USN-852-1","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.vupen.com/english/advisories/2009/2197","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/52317","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2009-2767","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}