High severity · published Mar 3, 2022
CVE-2022-0492
Linux Kernel Improper Authentication Vulnerability
In wildKEV
7.8
CVSS
5.5%
EPSS
Yes
On KEV
Description
A vulnerability was found in the Linux kernel’s cgroup_release_agent_write in the kernel/cgroup/cgroup-v1.c function. This flaw, under certain circumstances, allows the use of the cgroups v1 release_agent feature to escalate privileges and bypass the namespace isolation unexpectedly.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)5.5% · higher than 93% of CVEs
Exploited in the wildYes
CISA KEVListed Jun 2, 2026
Federal remediation dueJun 5, 2026
Ransomware campaign useNot known
Affected products
Which versions
KE
Kernel · Linux
kernel 5.17 rc3 · source: vendor, NVD, KEV
BO
Bootstrap OS · Netapp
All versions, or not specified · source: NVD
CL
Codeready Linux Builder · Redhat
8.0; 8.2 · source: NVD
DL
Debian Linux · Debian
9.0; 10.0; 11.0 · source: NVD
EL
Enterprise Linux · Redhat
8.0 · source: NVD
EL
In the news
VulnerabilityHigh
CISA Adds Two Known Exploited Vulnerabilities to Catalog
CISA has added two new vulnerabilities to its  Known Exploited Vulnerabilities (KEV) Catalog , based on evidence of active exploitation. CVE-2022-0492 Linux Kernel Improper Authentication Vulnerability CVE-2025-48595 Android Framework Integer Overflow Vulnerability These types of vulnerabilities are a frequent attack vector for malicious cyber actors and pose significant risks to the federal enterprise. Binding Operational Directive (BOD) 22-01: Reducing the Significant Risk of Known Exploited Vulnerabilities established the KEV Catalog as a living list of known Common Vulnerabilities and Exposures (CVEs) that carry significant risk to the federal enterprise. BOD 22-01 requires Federal Civilian Executive Branch (FCEB) agencies to remediate identified vulnerabilities by the due date to protect FCEB networks against active threats. See the  BOD 22-01 Fact Sheet for more information. Although BOD 22-01 only applies to FCEB agencies, CISA strongly urges all organizations to reduce their exposure to cyberattacks by prioritizing timely remediation of  KEV Catalog vulnerabilities as part of their vulnerability management practice. CISA will continue to add vulnerabilities to the catalog that meet the  specified criteria .
Jun 2, 2026·CISA Advisories
VulnerabilityHigh
[CISA KEV] CVE-2022-0492: Linux Kernel - Linux Kernel Improper Authentication Vulnerability
Linux Kernel contains an improper authentication vulnerability which could allow for privilege escalation via the cgroups v1 release_agent feature.
Jun 2, 2026·CISA KEV