CVE-2022-0995
Linux Kernel Out-of-Bounds Write Vulnerability
Linux Kernel
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.
Exploitation status
CISA Known Exploited Vulnerabilities
Listed by CISA on 26 August 2026. US federal agencies were required to remediate it by 9 September 2026.
EPSS — exploitation probability
FIRST puts the probability of exploitation activity in the next 30 days at 9.4%, which is higher than 95.2% of all scored vulnerabilities. EPSS is a forecast of activity, not a measure of severity, and it is rescored daily.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Frequently asked questions
Is CVE-2022-0995 being exploited by ransomware groups?
No ransomware group in this database is currently recorded as exploiting CVE-2022-0995.
What does CVE-2022-0995 affect?
CVE-2022-0995 affects Linux Kernel. 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.
How severe is CVE-2022-0995?
CVE-2022-0995 is rated HIGH with a CVSS base score of 7.8. EPSS puts the probability of exploitation in the next 30 days at 9.4%, higher than 95.2% of all scored vulnerabilities. It is listed in the CISA Known Exploited Vulnerabilities catalog, with a federal remediation deadline of 9 September 2026.
How should organisations respond to CVE-2022-0995?
Apply the vendor patch for Linux Kernel as the first priority, and treat any internet-facing instance as the most urgent. Because this vulnerability is associated with ransomware activity, also review whether the affected systems were reachable before patching, rather than assuming that patching alone closes the incident.