CVE-2022-0492

CRITICALNVD 7.89.0
EchelonGraph scoreHIGH confidence

“▲” beside the score: it is higher than NVD's CVSS score.

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2026-06-02), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 7.8 retained for reference. The 9.0 is the floor for confirmed exploitation, not an impact rating: this CVE's impact severity (EG Severity) is CVSS 7.8 HIGH under NVD CVSS v3. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: CISA Known Exploited Vulnerabilities catalog, EPSS, NVD CVSS v3
Trending — 3 sources updated this weekExploited in the wild
9.0EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV) — the reason this is sooner than the SSVC decision on this page at low or medium mission impact
CISA-KEV: ExploitedEPSS PROB: 5.5%CVSS: 7.8Exploit: Metasploit · other public PoCExposed services: Not assessed

A fix is available — apply it.

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 v3
7.8
EG Score
9.0CRITICALhigh confidence
EG Risk
75
EG Risk 75/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity78% × 45%
Impact severity (EG Severity): CVSS 7.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation100% × 40%
Fixed at 100% for a CISA KEV listing: EchelonGraph's rule.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low, Attend at medium and Act at high mission impact.
Exploitation active (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines at low, sooner than that at medium and as soon as possible at high mission impact.
EPSS PROB
5.5%
EPSS %ILE
92nd
KEV
⚠ Exploited

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (9.0): severity, escalated by confirmed exploitation. This CVE's 9.0 is the CISA KEV floor for confirmed exploitation, not an impact rating: its impact severity (EG Severity) is CVSS 7.8 HIGH.

EG Severity
7.8 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.NVD CVSS v3 · CVSS v3.0 or v3.1
EG Likelihood
5.5% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-22). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
CISA KEV and EG-KEV Tier 1 (exploited in the wild)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Attend at medium mission impactTrack at low, Attend at medium and Act at high mission impact.CISA BOD 26-04: 3 days & forensic triage if the affected system is publicly exposed; 14 days if it is not.Each input and its source: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low, Attend at medium and Act at high mission impact.

A fix is available. Apply it within your standard update timelines at low, sooner than that at medium and as soon as possible at high mission impact.

Exploitation active (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)3 days & forensic triage if the affected system is publicly exposed; 14 days if it is not.

In CISA KEV yes (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

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.”

Quoted verbatim from CISA's Known Exploited Vulnerabilities catalog. CISA directs it at US federal civilian executive branch agencies under Binding Operational Directive (BOD) 26-04, which replaced BOD 22-01 on 10 June 2026; it is not EchelonGraph's advice. CISA's notes: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=24f6008564183aa120d07c03d9289519c2fe02af · https://www.kernel.org/ · https://nvd.nist.gov/vuln/detail/CVE-2022-0492

Published

March 3, 2022

Last Modified

June 3, 2026

Advisory Details (10)

Auto-updated Oct 19, 2026
⚠️ Actively exploited (CISA KEV, CISA Vulnrichment). Patch available. Sources: redhat.
Web pageMentions a patch (unverified)

[SECURITY] [DSA 5096-1] linux security update

https://www.debian.org/security/2022/dsa-5096
Web page

[SECURITY] [DSA 5095-1] linux security update

https://www.debian.org/security/2022/dsa-5095
Web pageMentions a patch (unverified)

[SECURITY] [DLA 2941-1] linux-4.19 security update

https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html
Web pageMentions a patch (unverified)

[SECURITY] [DLA 2940-1] linux security update

https://lists.debian.org/debian-lts-announce/2022/03/msg00011.html
Web page

cgroup-v1: Require capabilities to set release_agent - kernel/git/torvalds/linux.git - Linux kernel source tree

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=24f6008564183aa120d07c03d9289519c2fe02af
Red HatMentions a patch (unverified)

2051505 – (CVE-2022-0492) CVE-2022-0492 kernel: cgroups v1 release_agent feature may allow privilege escalation

Affected: Red Hat Enterprise Linux 8

https://bugzilla.redhat.com/show_bug.cgi?id=2051505

Patch Availability(23)

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(7 across 6 ecosystems)
Debian:9(2)
PackageVulnerable rangeFix by version rangeDependents
linux4.9.107-1 ... 4.9.88-1~bpo8+1 (69 versions)
  • every version up to 4.9.303-1: fixed in 4.9.303-1
—
linux-4.194.19.132-1~deb9u1 ... 4.19.208-1~deb9u1 (10 versions)
  • every version up to 4.19.232-1~deb9u1: fixed in 4.19.232-1~deb9u1
—
Debian:10(1)
PackageVulnerable rangeFix by version rangeDependents
linux4.19.118-1 ... 4.19.98-1~bpo9+1 (36 versions)
  • every version up to 4.19.232-1: fixed in 4.19.232-1
—
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
linux5.10.103-1~bpo10+1 ... 5.10.92-2 (9 versions)
  • every version up to 5.10.103-1: fixed in 5.10.103-1
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 5.16.7-1: fixed in 5.16.7-1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 5.16.7-1: fixed in 5.16.7-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 5.16.7-1: fixed in 5.16.7-1
—

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(5)

Data Freshness Timeline

(refreshed 19× in last 7d / 193× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 1,182 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 1,082 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-23 16:28 UTCEPSS rescoreEPSS 5.5% · 92nd percentile
  2. 2026-10-23 01:19 UTCEG score recompute
  3. 2026-10-23 01:19 UTCVendor advisory
  4. 2026-10-22 16:29 UTCEPSS rescoreEPSS 5.5% · 92nd percentile
  5. 2026-10-21 23:04 UTCEG score recompute
  6. 2026-10-21 23:04 UTCVendor advisory
  7. 2026-10-21 16:28 UTCEPSS rescoreEPSS 5.5% · 92nd percentile
  8. 2026-10-20 20:51 UTCEG score recompute
  9. 2026-10-20 20:51 UTCVendor advisory
  10. 2026-10-20 16:28 UTCEPSS rescoreEPSS 5.5% · 92nd percentile
  11. 2026-10-19 18:39 UTCEG score recompute
  12. 2026-10-19 18:39 UTCVendor advisory
  13. 2026-10-19 16:28 UTCEPSS rescoreEPSS 5.5% · 92nd percentile
  14. 2026-10-18 16:28 UTCEPSS rescoreEPSS 5.5% · 92nd percentile
  15. 2026-10-18 16:26 UTCVendor advisory
  16. 2026-10-18 08:48 UTCEG score recompute
  17. 2026-10-17 19:44 UTCEG score recompute
  18. 2026-10-17 19:44 UTCVendor advisory
  19. 2026-10-17 16:29 UTCEPSS rescoreEPSS 5.5% · 92nd percentile
  20. 2026-10-16 17:31 UTCEG score recompute
  21. 2026-10-16 17:31 UTCVendor advisory
  22. 2026-10-16 16:34 UTCEPSS rescoreEPSS 5.5% · 92nd percentile
  23. 2026-10-15 16:28 UTCEPSS rescoreEPSS 5.5% · 92nd percentile
  24. 2026-10-15 15:18 UTCEG score recompute
  25. 2026-10-15 15:18 UTCVendor advisory
Show 75 more
  1. 2026-10-14 16:29 UTCEPSS rescoreEPSS 5.5% · 92nd percentile
  2. 2026-10-14 13:05 UTCEG score recompute
  3. 2026-10-14 13:05 UTCVendor advisory
  4. 2026-10-13 16:28 UTCEPSS rescoreEPSS 5.5% · 92nd percentile
  5. 2026-10-13 10:53 UTCVendor advisory
  6. 2026-10-12 19:04 UTCEG score recompute
  7. 2026-10-12 16:30 UTCEPSS rescoreEPSS 5.5% · 92nd percentile
  8. 2026-10-12 08:39 UTCVendor advisory
  9. 2026-10-12 04:54 UTCVendor advisory
  10. 2026-10-12 01:10 UTCVendor advisory
  11. 2026-10-11 21:27 UTCEG score recompute
  12. 2026-10-11 21:27 UTCVendor advisory
  13. 2026-10-11 17:44 UTCEG score recompute
  14. 2026-10-11 17:44 UTCVendor advisory
  15. 2026-10-11 14:01 UTCEG score recompute
  16. 2026-10-11 14:01 UTCVendor advisory
  17. 2026-10-11 13:44 UTCEPSS rescoreEPSS 5.5% · 92nd percentile
  18. 2026-10-11 10:19 UTCVendor advisory
  19. 2026-10-11 06:37 UTCVendor advisory
  20. 2026-10-11 02:55 UTCVendor advisory
  21. 2026-10-10 23:10 UTCEG score recompute
  22. 2026-10-10 23:10 UTCVendor advisory
  23. 2026-10-10 19:56 UTCEPSS rescoreEPSS 5.5% · 92nd percentile
  24. 2026-10-10 19:28 UTCVendor advisory
  25. 2026-10-10 15:45 UTCVendor advisory
  26. 2026-10-10 12:04 UTCVendor advisory
  27. 2026-10-10 08:22 UTCVendor advisory
  28. 2026-10-10 04:40 UTCVendor advisory
  29. 2026-10-10 00:56 UTCVendor advisory
  30. 2026-10-09 21:14 UTCEG score recompute
  31. 2026-10-09 21:14 UTCVendor advisory
  32. 2026-10-09 20:04 UTCEPSS rescoreEPSS 5.5% · 92nd percentile
  33. 2026-10-09 17:31 UTCVendor advisory
  34. 2026-10-09 13:48 UTCVendor advisory
  35. 2026-10-09 10:05 UTCVendor advisory
  36. 2026-10-09 06:23 UTCVendor advisory
  37. 2026-10-09 02:41 UTCVendor advisory
  38. 2026-10-08 22:59 UTCVendor advisory
  39. 2026-10-08 19:17 UTCEG score recompute
  40. 2026-10-08 19:17 UTCVendor advisory
  41. 2026-10-08 16:40 UTCEPSS rescoreEPSS 5.5% · 92nd percentile
  42. 2026-10-08 15:35 UTCVendor advisory
  43. 2026-10-08 11:53 UTCVendor advisory
  44. 2026-10-08 08:10 UTCVendor advisory
  45. 2026-10-08 04:28 UTCVendor advisory
  46. 2026-10-08 00:46 UTCEG score recompute
  47. 2026-10-08 00:46 UTCVendor advisory
  48. 2026-10-07 23:45 UTCEPSS rescoreEPSS 5.5% · 92nd percentile
  49. 2026-10-07 21:04 UTCVendor advisory
  50. 2026-10-07 17:21 UTCVendor advisory
  51. 2026-10-07 13:36 UTCVendor advisory
  52. 2026-10-07 09:54 UTCVendor advisory
  53. 2026-10-07 06:12 UTCVendor advisory
  54. 2026-10-07 02:30 UTCVendor advisory
  55. 2026-10-06 22:48 UTCVendor advisory
  56. 2026-10-06 19:06 UTCVendor advisory
  57. 2026-10-06 15:24 UTCEG score recompute
  58. 2026-10-06 15:24 UTCVendor advisory
  59. 2026-10-06 15:14 UTCEPSS rescoreEPSS 5.5% · 92nd percentile
  60. 2026-10-06 11:42 UTCVendor advisory
  61. 2026-10-06 08:01 UTCVendor advisory
  62. 2026-10-06 04:19 UTCVendor advisory
  63. 2026-10-06 00:36 UTCVendor advisory
  64. 2026-10-05 20:53 UTCEG score recompute
  65. 2026-10-05 20:53 UTCVendor advisory
  66. 2026-10-05 17:40 UTCEPSS rescoreEPSS 5.5% · 92nd percentile
  67. 2026-10-05 17:11 UTCVendor advisory
  68. 2026-10-05 13:29 UTCVendor advisory
  69. 2026-10-05 09:47 UTCVendor advisory
  70. 2026-10-05 06:04 UTCVendor advisory
  71. 2026-10-05 02:22 UTCVendor advisory
  72. 2026-10-04 22:40 UTCVendor advisory
  73. 2026-10-04 18:58 UTCVendor advisory
  74. 2026-10-04 15:15 UTCVendor advisory
  75. 2026-10-04 11:31 UTCVendor advisory

Publicly available exploits

(7 references)

Public exploit code is referenced for this CVE (1 Metasploit module, 5 GitHub PoCs), as is 1 GitHub checker repository. A GitHub repository named or described as a checker or scanner checks whether a system is affected; it is not necessarily exploit code. Defenders should treat patch urgency accordingly.

  • Metasploitexploit/linux/local/docker_cgroup_escape✓ verified
    Published Dec 6, 2023

    Docker cgroups Container Escape

    Open source ↗
  • GitHub PoCT1erno/CVE-2022-0492-Docker-Breakout-Checker-and-PoC
    Published Feb 18, 2023

    Docker Breakout Checker and PoC via CAP_SYS_ADMIN and via user namespaces (CVE-2022-0492)

    Open source ↗
  • GitHub PoCKianaBin/CVE-2022-0492-Container-Escape
    Published Aug 27, 2022

    CVE-2022-0492-Container-Escape

    Open source ↗
  • GitHub PoCyoeelingBin/CVE-2022-0492-Container-Escape
    Published Aug 27, 2022

    CVE-2022-0492-Container-Escape

    Open source ↗
  • GitHub PoCchenaotian/CVE-2022-0492
    Published Mar 11, 2022

    CVE-2022-0492 EXP and Analysis write up

    Open source ↗
  • GitHub checkerSofianeHamlaoui/CVE-2022-0492-Checker
    Published Mar 6, 2022

    A script to check if a container environment is vulnerable to container escapes via CVE-2022-0492

    Open source ↗
  • GitHub PoCPaloAltoNetworks/can-ctr-escape-cve-2022-0492
    Published Feb 28, 2022

    Test whether a container environment is vulnerable to container escapes via CVE-2022-0492

    Open source ↗

Frequently asked(6)

What is CVE-2022-0492?
CVE-2022-0492 is a critical-severity vulnerability; its CVE record was published on March 3, 2022. 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.
When was the CVE record for CVE-2022-0492 published?
The CVE record for CVE-2022-0492 was published on March 3, 2022. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of June 3, 2026; the record at its source may have been updated since.
Is CVE-2022-0492 actively exploited?
Yes. CISA added CVE-2022-0492 to the Known Exploited Vulnerabilities catalog on June 2, 2026, affecting Linux Kernel. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate attention. A fix is available. Apply it.
What is the CVSS score of CVE-2022-0492?
CVE-2022-0492 has a CVSS v3 base score of 7.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0 (CRITICAL).
Which products are affected by CVE-2022-0492?
CVE-2022-0492 affects Linux Kernel. The affected packages EchelonGraph has on record, with version ranges, are listed in the Affected Packages section of this page.
How do I remediate CVE-2022-0492?
A fix for CVE-2022-0492 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2022-0492 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2022-0492

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