CVE-2022-0995: Linux Kernel Out-of-Bounds Write Vulnerability
Advisory generated from the CVE record, CISA, Exploit Observer and VEDAS: what it is, whether it is exploited, who is affected, and how to fix and detect it.
Generated by VEDAS. Scores as of 2026-11-01 19:19 UTC. Rebuilt every few hours from cve-scores, CISA KEV and vedas-signatures. How this works and its limits.
What it is
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.
Description quoted from the CVE record (assigned by redhat, published 2022-03-25).
Weakness: CWE-787
How it can be exploited
Exploitable with local access with low attack complexity needing low privileges and no user interaction. Impact: confidentiality high, integrity high, availability high. CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CISA assessment (SSVC): CISA assesses exploitation as active. Automatable: no. Technical impact: total.
- On CISA KEV since
- 2026-08-26
- US federal deadline
- 2026-08-29
- Ransomware use
- Not known
Public exploit evidence (Exploit Observer)
Also known as: BDU:2022-01597, CNNVD-202203-1869, CNVD-2022-69204, EUVD-2022-15988, GHSA-q5p3-3mpm-hppr
VEDAS cluster: VEDAS:BEASTLYHAWK
Exploit Observer links 6 pieces of public exploit code or detection modules that name this CVE or one of its aliases.
Exploit code and modules (6)
Code that names this CVE. A repository can be a working exploit, a scanner, a fake or malware; read it before running anything.
- Metasploit module: https://www.rapid7.com/db/modules/exploit/linux/local/cve_2022_0995_watch_queue/
- Code repository: https://github.com/1nzag/cve-2022-0995
- Code repository: https://github.com/a1b2rt/cve-2022-0995
- Code repository: https://github.com/andreevsemen/cve-2022-0995
- Code repository: https://github.com/b0nfee/cve-2022-0995
- Code repository: https://github.com/rootkalilocalhost/cve-2022-0995
Research and write-ups (3)
- Research or write-up: https://advisories.mageia.org/CVE-2022-0995.html
- Research or write-up: https://security.ublinux.ru/CVE-2022-0995
- Research or write-up: https://www.rapid7.com/db/vulnerabilities/suse-cve-2022-0995
Vulnerability databases and vendor advisories (13)
Catalogue entries, not exploit evidence.
- Vulnerability database or vendor advisory: https://access.redhat.com/security/cve/cve-2022-0995
- Vulnerability database or vendor advisory: https://euvd.enisa.europa.eu/enisa/EUVD-2022-15988
- Vulnerability database or vendor advisory: https://github.com/advisories/GHSA-q5p3-3mpm-hppr
- Vulnerability database or vendor advisory: https://nvd.nist.gov/vuln/detail/CVE-2022-0995
- Vulnerability database or vendor advisory: https://osv.dev/vulnerability/BELL-CVE-2022-0995
- Vulnerability database or vendor advisory: https://osv.dev/vulnerability/UBUNTU-CVE-2022-0995
- Vulnerability database or vendor advisory: https://security-tracker.debian.org/tracker/CVE-2022-0995
- Vulnerability database or vendor advisory: https://ubuntu.com/security/CVE-2022-0995
- Vulnerability database or vendor advisory: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-0995
- Vulnerability database or vendor advisory: https://www.cnnvd.org.cn/home/globalSearch?keyword=CNNVD-202203-1869
- Vulnerability database or vendor advisory: https://www.cnvd.org.cn/flaw/show/CNVD-2022-69204
- Vulnerability database or vendor advisory: https://www.suse.com/security/cve/CVE-2022-0995
- and 1 more
1081 more references returned by Exploit Observer did not name this CVE or an alias, so they are left out.
VEDAS data as of 2026-11-01T17:12 UTC; fetched 2026-11-02.
Live scores
- EPSS
- 0.089
some chance of attack soon - VEDAS
- 0.984
strong exploit evidence - On CISA KEV
- Yes, since 2026-08-26
- Detection rule
- Out of scope (local)
Thin horizontal line: the “likely” (EPSS 0.10) or “strong” (VEDAS 0.90) threshold. Shaded “no data” areas are periods when cve-scores did not publish. The vertical line is the day CISA added it to its exploited list.
VEDAS flagged this bug about 18 days before CISA confirmed attacks.
Who is affected
| Product | Affected | Not affected |
|---|---|---|
| kernel | version kernel 5.17 rc8 | Not stated |
Version ranges exactly as the CVE record states them. “Before X” means X is the first fixed version.
Exploit Observer also maps it to: linux linux_kernel, ооо_«ред_софт» ред_ос.
How to fix it
CISA required action: 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.
Vendor guidance:
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=93ce93587d36493f2f86921fa79921b3cba63fbb
- https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk
- 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
How to detect it
This bug needs local access to exploit. VEDAS signatures cover remotely exploitable bugs for now, so there is no network rule or remote check for it. Patch it and watch your endpoint telemetry for unusual local activity.
References
Government sources
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-0995 (government-resource)
Other references
- https://bugzilla.redhat.com/show_bug.cgi?id=2063786 (x_refsource_MISC)
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=93ce93587d36493f2f86921fa79921b3cba63fbb (x_refsource_MISC)
- http://packetstormsecurity.com/files/166770/Linux-watch_queue-Filter-Out-Of-Bounds-Write.html (x_refsource_MISC)
- http://packetstormsecurity.com/files/166815/Watch-Queue-Out-Of-Bounds-Write.html (x_refsource_MISC)
- https://security.netapp.com/advisory/ntap-20220429-0001/ (x_refsource_CONFIRM)
Other databases
Where this comes from
This advisory is generated automatically by VEDAS from: CVE.org record, CISA KEV, cve-scores (EPSS and VEDAS), Exploit Observer. Text in quotes is reproduced from the source; everything else is a fixed template filled with source fields. Nothing here is written by a language model. Check the vendor advisory before acting, and read how VEDAS and Exploit Observer work, and their limits.