Actively exploitedCVSS 7.8 · HIGH

CVE-2022-0995Privilege escalation in the Linux kernel

Linux Kernel contains an out-of-bounds memory write vulnerability which could allow a local user to gain privileged access or cause a denial of service on the system.

View on NVD

Analysis

Una vulnerabilidad de escritura de memoria fuera de límites en el subsistema watch_queue del kernel de Linux permite a un usuario local obtener privilegios de root o causar una denegación de servicio. Este fallo está siendo explotado activamente en ataques reales. Es fundamental parchar servidores y entornos basados en Linux de inmediato.

Relevant roles

LinuxCloudDockerKubernetesBackendciberseguridad

Severity

Score: 7.8(HIGH)

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

AV: LOCAL

AC: LOW

PR: LOW

UI: NONE

S: UNCHANGED

C: HIGH

I: HIGH

A: HIGH

Weakness (CWE): CWE-787

CISA KEV

Added to KEV: 2026-08-26

Federal patch deadline: 2026-09-09

Known ransomware use: Unknown

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.

EPSS

Probability of exploitation (next 30 days): 0.0634 (6.3%)

Percentile: 93.1%

EPSS: 2026-08-26

Affects

linux:linux_kernelfedoraproject:fedoranetapp:h300e_firmwarenetapp:h300enetapp:h300s_firmwarenetapp:h300snetapp:h410c_firmwarenetapp:h410cnetapp:h410s_firmwarenetapp:h410snetapp:h500e_firmwarenetapp:h500enetapp:h500s_firmwarenetapp:h500snetapp:h610c_firmwarenetapp:h610cnetapp:h610s_firmwarenetapp:h610snetapp:h615c_firmwarenetapp:h615cnetapp:h700e_firmwarenetapp:h700enetapp:h700s_firmwarenetapp:h700s

Technical 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.

Published: 3/25/2022, 7:15:10 PM

Last modified: 8/26/2026, 7:59:44 PM

References

How to read this card

Actively exploited

KEV (Known Exploited Vulnerabilities) is CISA's catalog of CVEs confirmed as actively exploited in the real world. If a CVE is on KEV, someone is already using it in attacks.

CVSS 10.0

CVSS 10.0 — máxima severidad teórica. Explotable de forma remota, sin privilegios, con impacto total. Aún no confirmada como explotada en el mundo real, pero parchea ya.

AI-recommended

Un modelo de lenguaje revisó el CVE y consideró que afecta a software ampliamente desplegado o herramientas comunes de desarrollo. Un humano del equipo aprobó la publicación antes de que llegara aquí.

Categorías de impacto que evalúa la IA

widely_deployed_infra — kernel Linux, OpenSSL, glibc, k8s, Docker, nginx, OpenSSH.

popular_dev_tooling — Node.js, Python, Go, React, Next.js, librerías comunes de npm/pip.

common_consumer_software — Chrome, Firefox, Windows, macOS, apps móviles populares.

enterprise_saas — GitHub, GitLab, Atlassian, Salesforce, Cisco, Fortinet, Ivanti.

niche_software — CMS regionales, herramientas de hobby, librerías de poco uso.

not_relevant — firmware específico de proveedor, software descontinuado.

EPSS — EPSS (Exploit Prediction Scoring System) by FIRST.org estimates the probability that a CVE will be exploited in the next 30 days. Range is 0 to 1; very fresh CVEs typically score low until evidence accumulates.