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Fencer Vulns
high 7.8

CVE-2022-0492 kev in the critical feed json

A vulnerability was found in the Linux kernel’s cgroup_release_agent_write in the kernel/cgroup/cgroup-v1.c function.

published 2022-03-03 4 y ago modified 2026-06-17 4 mo ago also EUVD-2022-15629

cvss
7.8
version 3.1, CNA
cisa kev
Exploited
added 2026-06-02
epss
5.5%
EPSS 5.5% chance of exploitation in 30 days, percentile 92%
public exploits
1
Metasploit

Summary

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.

Patch / fix

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.

  • linux linux_kernel 4.9.301, 4.14.266, 4.19.229, 5.4.177, 5.10.97, 5.15.20, 5.16.6
  • linux Debian 14, Debian 13, Debian 12 5.16.7-1

debian advisories DEBIAN-CVE-2022-0492

  • linux Ubuntu 18.04 LTS 4.15.0-173.182
  • linux Ubuntu 20.04 LTS 5.4.0-105.119
  • linux-aws Ubuntu 18.04 LTS 4.15.0-1124.133
  • linux-aws Ubuntu 20.04 LTS 5.4.0-1069.73
  • linux-gcp Ubuntu 20.04 LTS 5.4.0-1068.72
  • linux-gke Ubuntu 20.04 LTS 5.4.0-1066.69
  • linux-ibm Ubuntu 20.04 LTS 5.4.0-1018.20
  • linux-kvm Ubuntu 18.04 LTS 4.15.0-1110.113

ubuntu advisories UBUNTU-CVE-2022-0492

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • kernel RHEL 8 4.18.0-348.20.1.el8_5
  • perf RHEL 8 4.18.0-348.20.1.el8_5
  • bpftool RHEL 8 4.18.0-348.20.1.el8_5
  • kernel-core RHEL 8 4.18.0-348.20.1.el8_5
  • kernel-tools RHEL 8 4.18.0-348.20.1.el8_5
  • python3-perf RHEL 8 4.18.0-348.20.1.el8_5
  • kernel-modules RHEL 8 4.18.0-348.20.1.el8_5
  • kernel-zfcpdump RHEL 8 4.18.0-348.20.1.el8_5

red hat advisories RHSA-2022:0825RHSA-2022:5157RHSA-2022:1418RHSA-2022:1413RHSA-2022:1455RHSA-2022:0925

  • kernel-rt SLE Micro 5.0, Real Time Module 15 SP2 5.3.18-150200.79.2
  • kernel-syms-rt Real Time Module 15 SP2 5.3.18-150200.79.1
  • kernel-rt_debug Real Time Module 15 SP2 5.3.18-150200.79.2
  • kernel-source-rt Real Time Module 15 SP2 5.3.18-150200.79.2
  • kernel-azure SLES for SAP 12 SP5, SLES 12 SP5 4.12.14-16.91.1
  • kernel-syms-azure SLES for SAP 12 SP5, SLES 12 SP5 4.12.14-16.91.1
  • kernel-source-azure SLES for SAP 12 SP5, SLES 12 SP5 4.12.14-16.91.1
  • kernel-rt SLE Micro 5.1, Real Time Module 15 SP3 5.3.18-150300.82.1

suse advisories SUSE-SU-2022:1257-1SUSE-SU-2022:0765-1SUSE-SU-2022:1038-1SUSE-SU-2022:1036-1SUSE-SU-2022:1035-1SUSE-SU-2022:1012-1

  • kernel-default openSUSE Leap 15.3 4.12.14-197.108.1
  • kernel-vanilla openSUSE Leap 15.3 4.12.14-197.108.1
  • kernel-kvmsmall openSUSE Leap 15.3 4.12.14-197.108.1
  • kernel-zfcpdump openSUSE Leap 15.3 4.12.14-197.108.1
  • dtb-aarch64 openSUSE Leap 15.3 5.3.18-150300.59.54.1
  • kernel-64kb openSUSE Leap 15.3 5.3.18-150300.59.54.1
  • kernel-syms openSUSE Leap 15.3 5.3.18-150300.59.54.1
  • kernel-obs-qa openSUSE Leap 15.3 5.3.18-150300.59.54.1

opensuse advisories openSUSE-SU-2022:0768-1openSUSE-SU-2022:0760-1openSUSE-SU-2022:0755-1

  • kernel Rocky Linux 8 4.18.0-348.20.1.el8_5
  • kernel-rt Rocky Linux 8 4.18.0-348.20.1.rt7.150.el8_5

rocky linux advisories RLSA-2022:0825RLSA-2022:0819

  • kernel CBL-Mariner 2.0 5.15.26.1-2

azure linux advisories AZL-8966

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2022-0492 updated cvss 7.0

kernel: cgroups v1 release_agent feature may allow privilege escalation

  • Red Hat CodeReady Linux Builder (v. 8) kernel-debuginfo-common-x86_64 4.18.0-348.20.1.el8_5, kernel-debuginfo-common-aarch64 4.18.0-348.20.1.el8_5, kernel-debuginfo-common-ppc64le 4.18.0-348.20.1.el8_5
    fixed: vendor fix RHSA-2022:0825
  • Red Hat CodeReady Linux Builder EUS (v. 8.2) kernel-debuginfo-common-x86_64 4.18.0-193.79.1.el8_2, kernel-debuginfo-common-aarch64 4.18.0-193.79.1.el8_2, kernel-debuginfo-common-ppc64le 4.18.0-193.79.1.el8_2
    fixed: vendor fix RHSA-2022:0820
  • Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-348.20.1.el8_5, kernel 4.18.0-348.20.1.el8_5, bpftool 4.18.0-348.20.1.el8_5, kpatch-patch-4_18_0-348 1-3.el8, kernel-core 4.18.0-348.20.1.el8_5, kernel-tools 4.18.0-348.20.1.el8_5, +19 more
    fixed: vendor fix RHSA-2022:0825
  • Red Hat Enterprise Linux BaseOS E4S (v. 8.1) perf 4.18.0-147.64.1.el8_1, kernel 4.18.0-147.64.1.el8_1, bpftool 4.18.0-147.64.1.el8_1, kernel-core 4.18.0-147.64.1.el8_1, kernel-tools 4.18.0-147.64.1.el8_1, python3-perf 4.18.0-147.64.1.el8_1, +19 more
    fixed: vendor fix RHSA-2022:0823
  • Red Hat Enterprise Linux BaseOS EUS (v. 8.2) perf 4.18.0-193.79.1.el8_2, kernel 4.18.0-193.79.1.el8_2, bpftool 4.18.0-193.79.1.el8_2, kernel-core 4.18.0-193.79.1.el8_2, kernel-tools 4.18.0-193.79.1.el8_2, python3-perf 4.18.0-193.79.1.el8_2, +25 more
    fixed: vendor fix RHSA-2022:0820
  • Red Hat Enterprise Linux BaseOS EUS (v.8.4) perf 4.18.0-305.45.1.el8_4, kernel 4.18.0-305.45.1.el8_4, bpftool 4.18.0-305.45.1.el8_4, kpatch-patch-4_18_0-305 1-12.el8, kernel-core 4.18.0-305.45.1.el8_4, kernel-tools 4.18.0-305.45.1.el8_4, +28 more
    fixed: vendor fix RHSA-2022:1455
  • Red Hat Enterprise Linux Client (v. 7) perf 3.10.0-1160.66.1.el7, kernel 3.10.0-1160.66.1.el7, bpftool 3.10.0-1160.66.1.el7, python-perf 3.10.0-1160.66.1.el7, kernel-tools 3.10.0-1160.66.1.el7, kernel-tools-libs 3.10.0-1160.66.1.el7, +2 more Red Hat Enterprise Linux Client Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-1160.66.1.el7 Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-1160.66.1.el7
    fixed: vendor fix RHSA-2022:4642
  • Red Hat Enterprise Linux CRB EUS (v.8.4) kernel-debuginfo-common-x86_64 4.18.0-305.45.1.el8_4, kernel-debuginfo-common-aarch64 4.18.0-305.45.1.el8_4, kernel-debuginfo-common-ppc64le 4.18.0-305.45.1.el8_4
    fixed: vendor fix RHSA-2022:1455
show 29 more
  • Red Hat Enterprise Linux for Real Time (v. 7) kernel-rt 3.10.0-1160.66.1.rt56.1207.el7, kernel-rt-trace 3.10.0-1160.66.1.rt56.1207.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-1160.66.1.rt56.1207.el7
    fixed: vendor fix RHSA-2022:4644
  • Red Hat Enterprise Linux for Real Time (v. 8) kernel-rt 4.18.0-348.20.1.rt7.150.el8_5, kernel-rt-core 4.18.0-348.20.1.rt7.150.el8_5, kernel-rt-modules 4.18.0-348.20.1.rt7.150.el8_5, kernel-rt-debug-core 4.18.0-348.20.1.rt7.150.el8_5, kernel-rt-debug-modules 4.18.0-348.20.1.rt7.150.el8_5, kernel-rt-modules-extra 4.18.0-348.20.1.rt7.150.el8_5, +2 more
    fixed: vendor fix RHSA-2022:0819
  • Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt 3.10.0-1160.66.1.rt56.1207.el7, kernel-rt-kvm 3.10.0-1160.66.1.rt56.1207.el7, kernel-rt-trace 3.10.0-1160.66.1.rt56.1207.el7, kernel-rt-debug-kvm 3.10.0-1160.66.1.rt56.1207.el7, kernel-rt-trace-kvm 3.10.0-1160.66.1.rt56.1207.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-1160.66.1.rt56.1207.el7
    fixed: vendor fix RHSA-2022:4644
  • Red Hat Enterprise Linux NFV EUS (v.8.4) kernel-rt 4.18.0-305.45.1.rt7.117.el8_4, kernel-rt-kvm 4.18.0-305.45.1.rt7.117.el8_4, kernel-rt-core 4.18.0-305.45.1.rt7.117.el8_4, kernel-rt-modules 4.18.0-305.45.1.rt7.117.el8_4, kernel-rt-debug-kvm 4.18.0-305.45.1.rt7.117.el8_4, kernel-rt-debug-core 4.18.0-305.45.1.rt7.117.el8_4, +4 more
    fixed: vendor fix RHSA-2022:1413
  • Red Hat Enterprise Linux Real Time EUS (v. 8.2) kernel-rt 4.18.0-193.79.1.rt13.129.el8_2, kernel-rt-core 4.18.0-193.79.1.rt13.129.el8_2, kernel-rt-modules 4.18.0-193.79.1.rt13.129.el8_2, kernel-rt-debug-core 4.18.0-193.79.1.rt13.129.el8_2, kernel-rt-debug-modules 4.18.0-193.79.1.rt13.129.el8_2, kernel-rt-modules-extra 4.18.0-193.79.1.rt13.129.el8_2, +2 more
    fixed: vendor fix RHSA-2022:0821
  • Red Hat Enterprise Linux Real Time for NFV (v. 8) kernel-rt 4.18.0-348.20.1.rt7.150.el8_5, kernel-rt-kvm 4.18.0-348.20.1.rt7.150.el8_5, kernel-rt-core 4.18.0-348.20.1.rt7.150.el8_5, kernel-rt-modules 4.18.0-348.20.1.rt7.150.el8_5, kernel-rt-debug-kvm 4.18.0-348.20.1.rt7.150.el8_5, kernel-rt-debug-core 4.18.0-348.20.1.rt7.150.el8_5, +4 more
    fixed: vendor fix RHSA-2022:0819
  • Red Hat Enterprise Linux Real Time for NFV EUS (v. 8.2) kernel-rt 4.18.0-193.79.1.rt13.129.el8_2, kernel-rt-kvm 4.18.0-193.79.1.rt13.129.el8_2, kernel-rt-core 4.18.0-193.79.1.rt13.129.el8_2, kernel-rt-modules 4.18.0-193.79.1.rt13.129.el8_2, kernel-rt-debug-kvm 4.18.0-193.79.1.rt13.129.el8_2, kernel-rt-debug-core 4.18.0-193.79.1.rt13.129.el8_2, +4 more
    fixed: vendor fix RHSA-2022:0821
  • Red Hat Enterprise Linux RT EUS (v.8.4) kernel-rt 4.18.0-305.45.1.rt7.117.el8_4, kernel-rt-core 4.18.0-305.45.1.rt7.117.el8_4, kernel-rt-modules 4.18.0-305.45.1.rt7.117.el8_4, kernel-rt-debug-core 4.18.0-305.45.1.rt7.117.el8_4, kernel-rt-debug-modules 4.18.0-305.45.1.rt7.117.el8_4, kernel-rt-modules-extra 4.18.0-305.45.1.rt7.117.el8_4, +2 more
    fixed: vendor fix RHSA-2022:1413
  • Red Hat Enterprise Linux Server (v. 6 ELS) perf 2.6.32-754.47.1.el6, kernel 2.6.32-754.47.1.el6, kernel-kdump 2.6.32-754.47.1.el6, kernel-firmware 2.6.32-754.47.1.el6, kernel-abi-whitelists 2.6.32-754.47.1.el6, kernel-debuginfo-common-i686 2.6.32-754.47.1.el6, +2 more
    fixed: vendor fix RHSA-2022:1417
  • Red Hat Enterprise Linux Server (v. 7) perf 3.10.0-1160.66.1.el7, kernel 3.10.0-1160.66.1.el7, bpftool 3.10.0-1160.66.1.el7, python-perf 3.10.0-1160.66.1.el7, kernel-kdump 3.10.0-1160.66.1.el7, kernel-tools 3.10.0-1160.66.1.el7, +16 more
    fixed: vendor fix RHSA-2022:4642
  • Red Hat Enterprise Linux Server AUS (v. 7.3) perf 3.10.0-514.101.1.el7, kernel 3.10.0-514.101.1.el7, python-perf 3.10.0-514.101.1.el7, kernel-tools 3.10.0-514.101.1.el7, kernel-tools-libs 3.10.0-514.101.1.el7, kernel-abi-whitelists 3.10.0-514.101.1.el7, +1 more
    fixed: vendor fix RHSA-2022:2189
  • Red Hat Enterprise Linux Server AUS (v. 7.4) perf 3.10.0-693.103.1.el7, kernel 3.10.0-693.103.1.el7, python-perf 3.10.0-693.103.1.el7, kernel-tools 3.10.0-693.103.1.el7, kernel-tools-libs 3.10.0-693.103.1.el7, kernel-abi-whitelists 3.10.0-693.103.1.el7, +1 more
    fixed: vendor fix RHSA-2022:5157
  • Red Hat Enterprise Linux Server AUS (v. 7.6) perf 3.10.0-957.94.1.el7, kernel 3.10.0-957.94.1.el7, bpftool 3.10.0-957.94.1.el7, python-perf 3.10.0-957.94.1.el7, kernel-tools 3.10.0-957.94.1.el7, kernel-tools-libs 3.10.0-957.94.1.el7, +2 more
    fixed: vendor fix RHSA-2022:2186
  • Red Hat Enterprise Linux Server AUS (v. 7.7) perf 3.10.0-1062.67.1.el7, kernel 3.10.0-1062.67.1.el7, bpftool 3.10.0-1062.67.1.el7, python-perf 3.10.0-1062.67.1.el7, kernel-tools 3.10.0-1062.67.1.el7, kernel-tools-libs 3.10.0-1062.67.1.el7, +2 more
    fixed: vendor fix RHSA-2022:4717
  • Red Hat Enterprise Linux Server E4S (v. 7.6) perf 3.10.0-957.94.1.el7, kernel 3.10.0-957.94.1.el7, python-perf 3.10.0-957.94.1.el7, kernel-tools 3.10.0-957.94.1.el7, kpatch-patch-3_10_0-957_72_1 1-7.el7, kpatch-patch-3_10_0-957_76_1 1-7.el7, +11 more
    fixed: vendor fix RHSA-2022:2186
  • Red Hat Enterprise Linux Server E4S (v. 7.7) perf 3.10.0-1062.67.1.el7, kernel 3.10.0-1062.67.1.el7, bpftool 3.10.0-1062.67.1.el7, python-perf 3.10.0-1062.67.1.el7, kernel-tools 3.10.0-1062.67.1.el7, kpatch-patch-3_10_0-1062_51_1 1-7.el7, +12 more
    fixed: vendor fix RHSA-2022:4717
  • Red Hat Enterprise Linux Server Optional (v. 6 ELS) python-perf 2.6.32-754.47.1.el6, kernel-debuginfo-common-i686 2.6.32-754.47.1.el6, kernel-debuginfo-common-s390x 2.6.32-754.47.1.el6, kernel-debuginfo-common-x86_64 2.6.32-754.47.1.el6
    fixed: vendor fix RHSA-2022:1417
  • Red Hat Enterprise Linux Server Optional (v. 7) kernel-debuginfo-common-ppc64 3.10.0-1160.66.1.el7, kernel-debuginfo-common-x86_64 3.10.0-1160.66.1.el7, kernel-debuginfo-common-ppc64le 3.10.0-1160.66.1.el7
    fixed: vendor fix RHSA-2022:4642
  • Red Hat Enterprise Linux Server Optional AUS (v. 7.3) kernel-debuginfo-common-x86_64 3.10.0-514.101.1.el7
    fixed: vendor fix RHSA-2022:2189
  • Red Hat Enterprise Linux Server Optional AUS (v. 7.4) kernel-debuginfo-common-x86_64 3.10.0-693.103.1.el7
    fixed: vendor fix RHSA-2022:5157
  • Red Hat Enterprise Linux Server Optional AUS (v. 7.6) kernel-debuginfo-common-x86_64 3.10.0-957.94.1.el7
    fixed: vendor fix RHSA-2022:2186
  • Red Hat Enterprise Linux Server Optional AUS (v. 7.7) kernel-debuginfo-common-x86_64 3.10.0-1062.67.1.el7
    fixed: vendor fix RHSA-2022:4717
  • Red Hat Enterprise Linux Server Optional E4S (v. 7.6) kernel-debuginfo-common-x86_64 3.10.0-957.94.1.el7, kernel-debuginfo-common-ppc64le 3.10.0-957.94.1.el7
    fixed: vendor fix RHSA-2022:2186
  • Red Hat Enterprise Linux Server Optional E4S (v. 7.7) kernel-debuginfo-common-x86_64 3.10.0-1062.67.1.el7, kernel-debuginfo-common-ppc64le 3.10.0-1062.67.1.el7
    fixed: vendor fix RHSA-2022:4717
  • Red Hat Enterprise Linux Server Optional TUS (v. 7.6) kernel-debuginfo-common-x86_64 3.10.0-957.94.1.el7
    fixed: vendor fix RHSA-2022:2186
  • Red Hat Enterprise Linux Server Optional TUS (v. 7.7) kernel-debuginfo-common-x86_64 3.10.0-1062.67.1.el7
    fixed: vendor fix RHSA-2022:4717
  • Red Hat Enterprise Linux Server TUS (v. 7.6) perf 3.10.0-957.94.1.el7, kernel 3.10.0-957.94.1.el7, bpftool 3.10.0-957.94.1.el7, python-perf 3.10.0-957.94.1.el7, kernel-tools 3.10.0-957.94.1.el7, kernel-tools-libs 3.10.0-957.94.1.el7, +2 more
    fixed: vendor fix RHSA-2022:2186
  • Red Hat Enterprise Linux Server TUS (v. 7.7) perf 3.10.0-1062.67.1.el7, kernel 3.10.0-1062.67.1.el7, bpftool 3.10.0-1062.67.1.el7, python-perf 3.10.0-1062.67.1.el7, kernel-tools 3.10.0-1062.67.1.el7, kernel-tools-libs 3.10.0-1062.67.1.el7, +2 more
    fixed: vendor fix RHSA-2022:4717
  • Red Hat Enterprise Linux Workstation (v. 7) perf 3.10.0-1160.66.1.el7, kernel 3.10.0-1160.66.1.el7, bpftool 3.10.0-1160.66.1.el7, python-perf 3.10.0-1160.66.1.el7, kernel-tools 3.10.0-1160.66.1.el7, kernel-tools-libs 3.10.0-1160.66.1.el7, +2 more Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-1160.66.1.el7
    fixed: vendor fix RHSA-2022:4642

2 more not affected in the full advisory

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

cisa ICSA-22-270-02 updated cvss 7.8

Hitachi Energy APM Edge

  • Hitachi Energy Lumada APM Edge 3.0, 1.0, 4.0, 2.0
    affected: vendor fix, mitigation “Physically protect process control systems from unauthorized direct access.” search.abb.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

Timeline

  1. First public exploit (Metasploit exploit/linux/local/docker_cgroup_escape)
  2. Published
  3. CISA SSVC: exploitation active
  4. Added to CISA KEV
  5. CISA patch deadline

Known exploited

Added
5 mo ago
Patch by
2026-06-05 (5 mo ago)
Ransomware
Not known
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.
Vendor, product
Linux, Kernel
CISA name
Linux Kernel Improper Authentication Vulnerability

CISA SSVC

Exploitation
Active, exploited in the wild
Automatable
no
Technical impact
total
Assessed
5 mo ago

Exploit prediction

5.53% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 6.9 AV:L/AC:M/Au:N/C:C/I:C/A:C

Affected products

  • n/a kernel

Classification

Weakness
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.