CVE-2022-0995
Linux Kernel Out-of-Bounds Write Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 9 September 2026). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
Description
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.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 9.52% probability · 95th percentile
- CISA KEV
- Listed 26 August 2026 · due 9 September 2026
- Weakness
- CWE-787
- Affected
- linux/linux kernel · fedoraproject/fedora · netapp/h300e firmware · netapp/h300s firmware · netapp/h410c firmware · netapp/h410s firmware · netapp/h500e firmware · netapp/h500s firmware · netapp/h610c firmware · netapp/h610s firmware · netapp/h615c firmware · netapp/h700e firmware · netapp/h700s firmware
- Source
- secalert@redhat.com
CISA notes
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. 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
References
- http://packetstormsecurity.com/files/166770/Linux-watch_queue-Filter-Out-Of-Bounds-Write.htmlExploit, Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/166815/Watch-Queue-Out-Of-Bounds-Write.htmlExploit, Third Party Advisory, VDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=2063786Issue Tracking, Patch, Third Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=93ce93587d36493f2f86921fa79921b3cba63fbbPatch, Vendor Advisory
- https://security.netapp.com/advisory/ntap-20220429-0001/Third Party Advisory
- http://packetstormsecurity.com/files/166770/Linux-watch_queue-Filter-Out-Of-Bounds-Write.htmlExploit, Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/166815/Watch-Queue-Out-Of-Bounds-Write.htmlExploit, Third Party Advisory, VDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=2063786Issue Tracking, Patch, Third Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=93ce93587d36493f2f86921fa79921b3cba63fbbPatch, Vendor Advisory
- https://security.netapp.com/advisory/ntap-20220429-0001/Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-0995US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.