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vulnerability

CVE-2022-0492

7.8
High
KEV · Exploited in wildEPSS 6%Patch available

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.

exploited
Yes, in CISA KEV since 2 Jun 2026fix by 5 Jun 2026 (CISA deadline for US federal agencies)public exploit code
fix
Patch available see the advisory in the references
likelihood
EPSS 5.5%
Published 3 Mar 2022Analysed here 2 Nov 2026CVSS scored by CISA

do firstApply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

triage
server-sideruntimeWAF can block: noAV · localCWE-287· Improper AuthenticationCWE-862· Missing Authorization

Can a WAF block it? No. The attack needs local access to the machine, so a WAF is not on its path.

Also consider: patch · add auth middleware

Based on the attack vector (local or physical access). We check Cloudflare, AWS, Google Cloud Armor and Azure; for Akamai, Imperva, Fastly, F5, ask your vendor.

cvss vector
attack vectorlocalattack complexitylowprivileges requiredlowuser interactionnonescopeunchangedconfidentialityhighintegrityhighavailabilityhigh
CVSS 3.1 · CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
common questions

Is CVE-2022-0492 being exploited?

Yes. CVE-2022-0492 appears in CISA's Known Exploited Vulnerabilities catalog, which means exploitation in the wild has been confirmed and reported. Treat it as active rather than theoretical, and patch it ahead of higher-scoring vulnerabilities that carry no exploitation evidence.

How severe is CVE-2022-0492?

CVE-2022-0492 is rated High with a CVSS score of 7.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.

Is there a patch for CVE-2022-0492?

Yes. A fix has been recorded for CVE-2022-0492. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.

What does CVE-2022-0492 affect?

CVE-2022-0492 affects netapp:h300s_firmware, netapp:h410c_firmware, netapp:h410s_firmware, netapp:h500s_firmware, and 23 further products or versions. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.

Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.

executive summary
technical analysis
affected
netapp:h300s_firmwarenetapp:h410c_firmwarenetapp:h410s_firmwarenetapp:h500s_firmwarenetapp:h700s_firmwarenetapp:bootstrap_oslinux:linux_kerneldebian:debian_linuxredhat:codeready_linux_builderredhat:codeready_linux_builder_for_power_little_endianredhat:virtualization_hostredhat:enterprise_linuxredhat:enterprise_linux_eusredhat:enterprise_linux_for_ibm_z_systemsredhat:enterprise_linux_for_ibm_z_systems_eusredhat:enterprise_linux_for_power_little_endianredhat:enterprise_linux_for_power_little_endian_eusredhat:enterprise_linux_for_real_time_for_nfv_tusredhat:enterprise_linux_for_real_time_tusredhat:enterprise_linux_server_ausredhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutionsredhat:enterprise_linux_server_tusredhat:enterprise_linux_server_update_services_for_sap_solutionscanonical:ubuntu_linuxfedoraproject:fedoranetapp:solidfire\,_enterprise_sds_\&_hci_storage_nodenetapp:solidfire_\&_hci_management_node
affected versions
kernel
  • affectedkernel 5.17 rc3

As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.

public exploits

Public exploit code: 1 Metasploit module · 8 GitHub proofs of concept

Metasploit

Listed so you can judge urgency, not as a recommendation to run anything. GitHub “proofs of concept” are unvetted: some are fake or carry malware. Exploit-DB marks the entries its staff verified.

cisa ssvc

exploitation
active
automatable
no
technical impact
total

Assessed by CISA 2 Jun 2026 (SSVC 2.0.3).

timeline

  1. 28 Feb 2022First public exploit or proof of concept
  2. 3 Mar 2022Published · 4 days later
  3. 2 Jun 2026Added to CISA KEV (exploited in the wild) · 1,551 days (about 4 years) later
  4. 2 Jun 2026CISA SSVC assessment: exploitation active · same day later
  5. 3 Jun 2026CVE record last updated · 1 day later
  6. 5 Jun 2026CISA remediation due date (US federal agencies) · 2 days later
  7. 2 Nov 2026Analysed by vulneraibility.com · 151 days (about 5 months) later
how to fix
Remediation steps are tailored for users whose stack is affected. Add this technology to your stack to see the fix checklist.
references
NVDCVE.orgCVE DetailsSource
11 references in the CVE record: 2 advisories, 9 links
Show 3 more

sources

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