Is CVE-2022-0995 actively exploited?

Yes. Previdian tracks CVE-2022-0995 as a known exploited vulnerability. Confidence is confirmed.

What exploitation activity has Previdian observed?

Previdian has not yet recorded sensor-observed exploitation attempts for CVE-2022-0995. Our sensors continue to monitor for activity targeting this CVE.

Which versions are affected?

CVE-2022-0995 affects Linux kernel. Reported affected version: kernel 5.17 rc8.

Yes. CVE-2022-0995 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

Vulnerability report

Exploited in the wild Confirmed confidence In CISA KEV

CVE-2022-0995

kernel Denial of Service

Linux / kernel · kernel 5.17 rc8

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Severity: CVSS 7.8 · High
Confidence: Confirmed
Exploit status: Exploited in the wild
EPSS: 6.3%
First observed: —
Last observed: —

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2022-0995 is a vulnerability affecting 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...

Is it exploited?

Yes. Previdian tracks this CVE as a known exploited vulnerability. Confidence is confirmed. Listed in CISA KEV. Also confirmed by third-party sources.

Who is affected?

Linux / kernel kernel 5.17 rc8.

What should we do?

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

Overview

An out-of-bounds (OOB) memory write flaw was found in the Linux kernel’s watch_queue event notification subsystem

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.

Vendor Product Affected Status

n/a kernel kernel 5.17 rc8 Affected

Published: 25 Mar 2022
Exploitation Reported: 26 Aug 2026
Attack vector: Local
Complexity: Low
Privileges: Low
User interaction: None

CVE References

CVE Record CVE.org · CVE Record https://www.cve.org/CVERecord?id=CVE-2022-0995
bugzilla.redhat.com/show_bug.cgi bugzilla.redhat.com · CVE Record https://bugzilla.redhat.com/show_bug.cgi?id=2063786
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/... git.kernel.org · CVE Record https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/co...
packetstormsecurity.com/files/166770/Linux-watch_queue-Filter-Out-Of... packetstormsecurity.com · CVE Record http://packetstormsecurity.com/files/166770/Linux-watch_queue-Filter-...
packetstormsecurity.com/files/166815/Watch-Queue-Out-Of-Bounds-Write... packetstormsecurity.com · CVE Record http://packetstormsecurity.com/files/166815/Watch-Queue-Out-Of-Bounds...
security.netapp.com/advisory/ntap-20220429-0001 security.netapp.com · CVE Record https://security.netapp.com/advisory/ntap-20220429-0001/

Exploitation evidence

Why Previdian marks this CVE as exploited

Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.

Exploited in the wild

CISA

Recorded 26 Aug 2026

Independent exploitation attestation added to the Previdian record.

Proof of concept available

GitHub

Recorded 26 Mar 2022

Public scanner or PoC coverage increases practical exploitability.

Known exploited vulnerability sources

Per-source evidence links for KEV attestations are available through the Previdian Pro API.

Learn about Pro API access

Source	Added
CISA First	2026-08-26 17:00 UTC
CVE	2026-08-26 18:01 UTC

Detection

Operational artifacts and observed signals

Make the evidence actionable in scanner, SOC, and edge-control workflows.

Observed signals

Request targets: 0
User-Agents: 0

Raw values available in Pro and Enterprise.

Scanner coverage

Metasploit template detected 28 Apr 2025.

View Metasploit template

Virtual patch status

No Previdian virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.

Learn about virtual patches →

Scanner Artifacts

Scanner and exploit-framework references linked to this CVE.

Scanner	Reference	Detected
Metasploit	https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/linux/local/cve_2022_0995_watch_queue.rb	28 Apr 2025

Risk and context

Severity, weaknesses, and research context

CVSS v3.1

7.8 High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

6.3%

Weaknesses

Out-of-bounds Write CWE-787

All CVSS Scores

CVSS v3.1 7.8 High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0 7.2 High

AV:L/AC:L/Au:N/C:C/I:C/A:C

Potential Proof of Concepts

These PoCs are unverified and could contain malware. Use at your own risk.

cve_2022_0995_watch_queue

metasploit · Created Unknown

Metasploit module for CVE-2022-0995

Timeline

From disclosure to observed exploitation

26 Aug 2026
KEV confirmed by CVE

Exploitation attested by an external source
26 Aug 2026
Added to CISA KEV

Listed in the CISA Known Exploited Vulnerabilities catalog
28 Apr 2025
Metasploit module available

Exploit module available
28 Apr 2025
Public PoC available

Public proof-of-concept code published
25 Mar 2022
CVE published

Vulnerability disclosed publicly
16 Mar 2022
CVE ID reserved

Identifier reserved by the CNA

Pro API

Automate this intelligence

Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.

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Evidence confidence and provenance
First-party sensor telemetry
PoC and scanner references
Affected versions and enrichment
Automation-ready JSON delivery

GET /api/v2/pro/kevs/CVE-2022-0995

Free JSON includes basic KEV fields

{
  "cve_id": "CVE-2022-0995",
  "confidence": "Confirmed",
  "cvss_score": 7.8,
  "cvss_estimated": false,
  "epss_score": 0.06344,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": false
  },
  "sensor_telemetry": { "attempts": 0, "sensors": 0 }
}

Early warning alerts

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