CVE-2022-0995
Linux — Linux Kernel Out-of-Bounds Write Vulnerability
Linux · CWE-787 — Out-of-bounds write · in CISA KEV since 2026-08-26
EVRS 75 of 100 Urgent
Patch This Cycle
Rank 1,038 of 2,960 tracked
Raised to the floor for a confirmed exploited vulnerability.
Why it scores 75
Evidence available: 6 of 7 signalsListed in the CISA KEV catalog, and an EPSS probability of 0.089.
- CISA KEVApplied
- RansomwareDid not apply
- Vendor exploitationDid not apply
- EPSSApplied
- Microsoft Exploitability IndexNot applicable
- Pre-patch disclosureNo data
- KEV recencyApplied
- CVSSApplied
The band answers “how soon”, not “how bad”. No data for: Pre-patch disclosure. Why some signals show no data
Fix
Patch or fixed version identifiedCISA required action
- 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
- BOD 26-04
- Forensics Triage Requirements
- nvd.nist.gov/…/CVE-2022-0995
Fixed in
linux -> 5.16.18-1
Affected versions
- linux kernel
>= 5.8 < 5.10.106>= 5.11 < 5.15.29>= 5.16 < 5.16.55.17 - fedora
35 - h300e firmware
- h300s firmware
- h410c firmware
- h410s firmware
- h500e firmware
- h500s firmware
+16 more affected products; see the full list at NVD.
Remediation
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.
Fixed versions from NVD.
Evidence
Each value with its source| Measure | Value | Source |
|---|---|---|
| CVSS base scoreHow severe the flaw is in itself. It does not say how likely an attack is. | 7.8 | NVD |
| FIRST EPSSFIRST's estimate of the chance this is exploited in the next 30 days, and how that ranks against all CVEs. | 0.089 (95.2nd pctl) | FIRST EPSS |
| Actively exploitedWhether a source of record has confirmed attacks using it in the wild. | Confirmed | CISA KEV |
| Ransomware campaign useWhether CISA has seen ransomware operators use it. | Unknown or none | CISA KEV |
| CISA remediation deadlineThe date US federal agencies must have fixed or mitigated it. | 2026-08-29 · CISA federal deadline · Overdue by 54 days | CISA KEV |
| Public exploit moduleA module existing is not the same as active exploitation. | Public module exists | Metasploit |
| EUVD cross-referenceENISA's record: CVSS 7.8 (v3.1), assigned by redhat. | Listed | ENISA EUVD |
Description
NVDAn 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.
What CISA says to do
- 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
- BOD 26-04
- Forensics Triage Requirements
- nvd.nist.gov/…/CVE-2022-0995
Public module
Metasploit lists a public great-rank module for this CVE: Watch Queue Out of Bounds Write (linux/local/cve_2022_0995_watch_queue). A module existing is not the same as active exploitation; see metasploit.com.