{"id":"CVE-2022-0995","published":"2022-03-25T19:15:10Z","modified":"2026-08-27T04:16:39Z","title":"Linux Kernel Out-of-Bounds Write Vulnerability","vendor":"Linux","product":"Kernel","tier":"core","eol":null,"description":{"text":"An out-of-bounds (OOB) memory write flaw was found in the Linux kernel’s watch_queue event notification subsystem. This flaw can overwrite parts of the kernel state, potentially allowing a local user to gain privileged access or cause a denial of service on the system.","provenance":"source","from":"NVD"},"summary":{"text":"The Linux kernel's watch_queue event notification subsystem contains an out-of-bounds write flaw that can overwrite parts of kernel state. An attacker needs only local access with a low-privileged user account, requiring no user interaction, and the flaw can lead to privilege escalation or denial of service.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-23T07:11:20Z"},"cvss":{"score":7.8,"severity":"HIGH","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","provenance":"source","from":"NVD"},"epss":{"score":0.08859,"percentile":0.95196,"date":"2026-10-29","provenance":"source"},"kev":{"dateAdded":"2026-08-26","dueDate":"2026-08-29","ransomware":false,"requiredAction":"Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.","notes":"This vulnerability affects an open-source component, third-party library, protocol, or proprietary implementation that could be used by different products. For more information, please see: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=93ce93587d36493f2f86921fa79921b3cba63fbb ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2022-0995","provenance":"source"},"vulncheckKev":{"dateAdded":"2026-08-20","exploitedFirstSeen":"2026-08-20","ransomware":false,"evidence":[{"url":"https://blog.talosintelligence.com/uat-10147-chinese-speaking-adversary-integrates-agentic-ai-into-post-compromise-operations/","date":"2026-08-20"},{"url":"https://previdian.com/CVE-2022-0995","date":"2026-08-26"},{"url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json","date":"2026-08-26"},{"url":"https://www.recordedfuture.com/blog/august-2026-cve-landscape","date":"2026-09-08"}],"evidenceTotal":4,"provenance":"source"},"exploited":true,"otx":{"pulseCount":38,"pulses":[{"name":"Actively_Exploited_Kev | Oct 29, 2026","url":"https://otx.alienvault.com/pulse/6ae20c1db17e7057ae7d9ad1","created":"2026-10-28"},{"name":"Actively_Exploited_Kev | Oct 28, 2026","url":"https://otx.alienvault.com/pulse/6ae0ba7e0e2a97ff7b218819","created":"2026-10-27"},{"name":"Actively_Exploited_Kev | Oct 27, 2026","url":"https://otx.alienvault.com/pulse/6adf68b85c3e852f3c111d18","created":"2026-10-26"},{"name":"Actively_Exploited_Kev | Oct 24, 2026","url":"https://otx.alienvault.com/pulse/6adb740e397c3ad4799aa4cd","created":"2026-10-23"},{"name":"Actively_Exploited_Kev | Oct 23, 2026","url":"https://otx.alienvault.com/pulse/6ada236fcfba2dfa730ea482","created":"2026-10-22"},{"name":"Actively_Exploited_Kev | Oct 22, 2026","url":"https://otx.alienvault.com/pulse/6ad8d33a077cbb5cab524d80","created":"2026-10-21"},{"name":"Actively_Exploited_Kev | Oct 21, 2026","url":"https://otx.alienvault.com/pulse/6ad78130c4d1ac2be83a8b6d","created":"2026-10-20"},{"name":"Actively_Exploited_Kev | Oct 20, 2026","url":"https://otx.alienvault.com/pulse/6ad62f63c24a405a3423cc13","created":"2026-10-19"},{"name":"Actively_Exploited_Kev | Oct 19, 2026","url":"https://otx.alienvault.com/pulse/6ad4dda174e5797d0bd238b7","created":"2026-10-18"},{"name":"Actively_Exploited_Kev | Oct 18, 2026","url":"https://otx.alienvault.com/pulse/6ad38c22e1848f8189d1c121","created":"2026-10-17"}],"provenance":"machine"},"cwes":[{"id":"CWE-787","name":"Out-of-bounds Write"}],"references":[{"url":"http://packetstormsecurity.com/files/166770/Linux-watch_queue-Filter-Out-Of-Bounds-Write.html","tags":["Exploit","Third Party Advisory","VDB Entry"]},{"url":"http://packetstormsecurity.com/files/166815/Watch-Queue-Out-Of-Bounds-Write.html","tags":["Exploit","Third Party Advisory","VDB Entry"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2063786","tags":["Issue Tracking","Patch","Third Party Advisory"]},{"url":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=93ce93587d36493f2f86921fa79921b3cba63fbb","tags":["Patch","Vendor Advisory"]},{"url":"https://security.netapp.com/advisory/ntap-20220429-0001/","tags":["Third Party Advisory"]},{"url":"http://packetstormsecurity.com/files/166770/Linux-watch_queue-Filter-Out-Of-Bounds-Write.html","tags":["Exploit","Third Party Advisory","VDB Entry"]},{"url":"http://packetstormsecurity.com/files/166815/Watch-Queue-Out-Of-Bounds-Write.html","tags":["Exploit","Third Party Advisory","VDB Entry"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2063786","tags":["Issue Tracking","Patch","Third Party Advisory"]},{"url":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=93ce93587d36493f2f86921fa79921b3cba63fbb","tags":["Patch","Vendor Advisory"]},{"url":"https://security.netapp.com/advisory/ntap-20220429-0001/","tags":["Third Party Advisory"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-0995","tags":["US Government Resource"]}],"techniques":[{"id":"T1068","name":"Exploitation for Privilege Escalation","tactics":["privilege-escalation"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: Local user exploits kernel flaw for privilege escalation","mappingType":"exploitation_technique","evidence":[{"from":"description","quote":"potentially allowing a local user to gain privileged access","start":166,"end":225}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"}],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2022-15988","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2022-15988","exploited":true,"exploitedSince":"2026-08-26","provenance":"source"},"exploits":[],"exploitSources":{"pocGithub":{"count":3,"skipped":1,"earliest":"2022-03-26","earliestUrl":"https://github.com/Bonfee/CVE-2022-0995","repos":[{"name":"Bonfee/CVE-2022-0995","url":"https://github.com/Bonfee/CVE-2022-0995","stars":498,"created":"2022-03-26"},{"name":"1nzag/CVE-2022-0995","url":"https://github.com/1nzag/CVE-2022-0995","stars":2,"created":"2024-01-03"},{"name":"AndreevSemen/CVE-2022-0995","url":"https://github.com/AndreevSemen/CVE-2022-0995","stars":1,"created":"2023-03-10"}]},"metasploit":[{"name":"Watch Queue Out of Bounds Write","module":"exploit/linux/local/cve_2022_0995_watch_queue","type":"exploit","disclosureDate":"2022-03-14","url":"https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/linux/local/cve_2022_0995_watch_queue.rb"}],"first":{"date":"2022-03-14","source":"Metasploit","url":"https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/linux/local/cve_2022_0995_watch_queue.rb"},"provenance":"source"},"exploitRefs":["http://packetstormsecurity.com/files/166770/Linux-watch_queue-Filter-Out-Of-Bounds-Write.html","http://packetstormsecurity.com/files/166815/Watch-Queue-Out-Of-Bounds-Write.html"],"flow":[{"stage":"exploitation","techniques":["T1068"],"provenance":"ai"}],"timeline":[{"date":"2022-03-14","kind":"exploit-public","label":"First public exploit: Metasploit; later: PoC-in-GitHub 2022-03-26","url":"https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/linux/local/cve_2022_0995_watch_queue.rb","provenance":"source"},{"date":"2022-03-25","kind":"published","label":"Published (NVD)","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-0995","provenance":"source"},{"date":"2026-08-20","kind":"exploited-reported","label":"Exploitation first reported (VulnCheck KEV evidence)","url":"https://blog.talosintelligence.com/uat-10147-chinese-speaking-adversary-integrates-agentic-ai-into-post-compromise-operations/","provenance":"source"},{"date":"2026-08-26","kind":"kev","label":"Added to CISA KEV","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","provenance":"source"},{"date":"2026-08-26","kind":"euvd-exploited","label":"ENISA EUVD: exploited","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2022-15988","provenance":"source"}],"speed":{"daysToPublicExploit":null,"firstExploitFrom":"Metasploit","daysToKev":1615},"priority":{"score":77.5,"factors":[{"name":"In a KEV catalog","points":35.0,"detail":"listed in CISA KEV and VulnCheck KEV"},{"name":"Recent KEV listing","points":10.0,"detail":"added 70 days ago"},{"name":"Known ransomware use","points":0.0,"detail":"not known"},{"name":"EPSS percentile","points":19.04,"detail":"percentile 0.9520"},{"name":"Named in threat reports","points":0.0,"detail":"0 reports"},{"name":"Public exploit code","points":5.0,"detail":"2 NVD references tagged Exploit; 3 PoC-in-GitHub repos; 1 Metasploit module"},{"name":"Mentioned in OTX pulses","points":3.0,"detail":"38 pulses"},{"name":"CVSS severity","points":5.46,"detail":"base score 7.8"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]},"lineage":{"familyId":"fam-class-linux-kernel-cwe-787"}}