CVE-2022-0492: Linux Kernel

Should you act?

Exploited: patch now if you run it

CISA has confirmed exploitation in the wild. This signal is computed from CISA KEV, EPSS and CVSS data; it is not an editorial verdict.

Yes, if you run Linux Kernel. CISA added this CVE to its Known Exploited Vulnerabilities catalog on 2026-06-02, which means there is reliable evidence of exploitation in the wild. US federal agencies must remediate by 2026-06-05; treat that as the outer limit, not the target.
EPSS 5.5%, percentile 93: FIRST’s model estimates a 5.5% chance of exploitation activity in the next 30 days, higher than 93% of all scored CVEs (elevated). EPSS is a probability, not a verdict.
Needs local access needed. Lower urgency for most teams unless an attacker could already run code on the machine.

What it is

A vulnerability was found in the Linux kernel’s cgroupreleaseagentwrite in the kernel/cgroup/cgroup-v1.c function. This flaw, under certain circumstances, allows the use of the cgroups v1 releaseagent feature to escalate privileges and bypass the namespace isolation unexpectedly.

CISA’s summary

Linux Kernel contains an improper authentication vulnerability which could allow for privilege escalation via the cgroups v1 release_agent feature.

Weakness type: CWE-287, CWE-862.

Product: Linux Kernel · Assigned by: redhat · Published: 2022-03-03

Affected and fixed versions

Vendor	Product	Affected versions (per CVE record)
n/a	kernel	kernel 5.17 rc3

Severity scores

Scored by	CVSS	Score	Vector
CISA-ADP	3.1	7.8 High	`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`

Attack vector: local access needed
Attack complexity: low
Privileges required: low (any account)
User interaction: none
Scope: unchanged

CVSS measures how bad a flaw is if exploited, not how likely exploitation is. Read it next to the exploitation data below.

Exploitation and urgency

CISA KEV: added 2026-06-02; federal due date 2026-06-05. Known ransomware use: Unknown.
CISA required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
CISA SSVC assessment: exploitation active, automatable no, technical impact total.
FIRST EPSS (model of 2026-10-21): 5.53% probability of exploitation activity in the next 30 days; percentile 93.

Timeline

2022-03-03 — CVE record published by redhat
2026-06-02 — Added to CISA’s Known Exploited Vulnerabilities catalog
2026-06-03 — CVE record last updated
2026-06-05 — CISA remediation deadline for US federal agencies

Sources and references

Original sources first. Version and fix details should always be confirmed against the vendor or project advisory.

Should you act?

What it is

CISA’s summary

Affected and fixed versions

Severity scores

Exploitation and urgency

Timeline

Sources and references

Vendor and project advisories, patches

Vulnerability records

Government

Other references from the CVE record and advisory