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 29 August 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
- 8.86% probability · 95th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Listed 26 August 2026 · due 29 August 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
EPSS 8.9% since 30 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
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, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.