CVE-2012-1146

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2022-05-13. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
5.5
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 1%CVSS: 5.5Exploit: NoneExposed: 0

A fix is available — apply it.

The mem_cgroup_usage_unregister_event function in mm/memcontrol.c in the Linux kernel before 3.2.10 does not properly handle multiple events that are attached to the same eventfd, which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact by registering memory threshold events.

CVSS v3
5.5
EG Score
5.5(medium)
EPSS
40.4%
KEV
Not listed

Published

May 17, 2012

Last Modified

April 29, 2026

Advisory Details (7)

Auto-updated May 29, 2026
Patch available. Sources: redhat, github_commit.
github_commit

commit 371528caec55 (torvalds/linux)

Fix landed in torvalds/linux commit 371528caec55 — awaiting tagged release

https://github.com/torvalds/linux/commit/371528caec553785c37f73fa3926ea0de84f986f
generic

IBM X-Force Exchange

https://exchange.xforce.ibmcloud.com/vulnerabilities/73711
redhat Patch Available

800813 – (CVE-2012-1146) CVE-2012-1146 kernel: mm: memcg: unregistring of events attached to the same eventfd can lead to oops

Affected: Red Hat Enterprise Linux 5 as they did not include support for control groups. This issue did not affect the versions of the L

https://bugzilla.redhat.com/show_bug.cgi?id=800813
generic

oss-security - Re: CVE request -- kernel: mm: memcg: unregistring of events attached to the same eventfd can lead to oops

http://www.openwall.com/lists/oss-security/2012/03/07/3
generic
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.10
generic

About Secunia Research | Flexera

http://secunia.com/advisories/48964
generic

About Secunia Research | Flexera

http://secunia.com/advisories/48898

Patch Availability(7)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-image-2.6.38-15-server (2.6.38-15.59~lucid1) @ lucid2026-05-29ubuntu
ubuntulinux-image-3.0.0-19-virtual (3.0.0-19.33) @ oneiric2026-05-29ubuntu
ubuntulinux-image-2.6.38-1209-omap4 (2.6.38-1209.24) @ natty2026-05-29ubuntu
ubuntulinux-image-3.0.0-1209-omap4 (3.0.0-1209.21) @ oneiric2026-05-29ubuntu
ubuntulinux-image-2.6.38-14-versatile (2.6.38-14.58) @ natty2026-05-29ubuntu
ubuntulinux-image-2.6.35-32-generic (2.6.35-32.68~lucid1) @ lucid2026-05-29ubuntu
ubuntulinux-image-3.0.0-19-virtual (3.0.0-19.33~lucid1) @ lucid2026-05-29ubuntu

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.

Weakness Classification(1)

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

All Vendor Advisories

(7)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 9× in last 7d / 43× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. 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. Most recent first.

  1. 2026-07-06 16:23 UTCEPSS rescore
  2. 2026-07-06 02:19 UTCEPSS rescore
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  8. 2026-06-30 23:19 UTCEPSS rescore
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  10. 2026-06-29 14:02 UTCEPSS rescore
  11. 2026-06-28 14:03 UTCEPSS rescore
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  14. 2026-06-27 03:05 UTCEPSS rescore
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  16. 2026-06-25 13:46 UTCEPSS rescore
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  18. 2026-06-24 14:02 UTCEPSS rescore
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  20. 2026-06-23 21:30 UTCEPSS rescore
  21. 2026-06-22 14:22 UTCEPSS rescore
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  23. 2026-06-21 14:53 UTCEPSS rescore
  24. 2026-06-21 01:56 UTCEPSS rescore
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  1. 2026-06-19 19:22 UTCEPSS rescore
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  3. 2026-06-18 17:49 UTCEPSS rescore
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  5. 2026-06-17 17:49 UTCEPSS rescore
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  7. 2026-06-16 17:49 UTCEPSS rescore
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  9. 2026-06-15 17:44 UTCEPSS rescore
  10. 2026-06-14 23:14 UTCEPSS rescore
  11. 2026-06-14 23:14 UTCEPSS rescore
  12. 2026-06-13 22:57 UTCEPSS rescore
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  14. 2026-06-11 13:56 UTCEPSS rescore
  15. 2026-06-10 22:14 UTCEPSS rescore
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  17. 2026-06-08 14:14 UTCEPSS rescore
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  19. 2026-06-07 15:22 UTCEPSS rescore
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  21. 2026-06-06 13:45 UTCEPSS rescore
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  23. 2026-06-05 22:44 UTCEPSS rescore
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  25. 2026-06-05 06:08 UTCEPSS rescore
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  27. 2026-06-04 13:09 UTCEPSS rescore
  28. 2026-06-02 20:10 UTCEPSS rescore
  29. 2026-06-02 20:10 UTCEPSS rescore
  30. 2026-06-01 13:49 UTCEPSS rescore
  31. 2026-05-29 13:41 UTCEPSS rescore
  32. 2026-05-29 04:33 UTCEG score recompute
  33. 2026-05-29 04:33 UTCVendor advisory
  34. 2026-05-29 04:33 UTCGHSA enrichment
  35. 2026-05-28 13:42 UTCEPSS rescore
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  37. 2026-05-27 13:38 UTCEPSS rescore
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  39. 2026-05-26 13:41 UTCEPSS rescore
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  41. 2026-05-26 07:16 UTCEPSS rescore
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  44. 2026-05-24 16:43 UTCEPSS rescore
  45. 2026-05-22 21:15 UTCEPSS rescore
  46. 2026-05-22 21:15 UTCEPSS rescore
  47. 2026-05-22 21:15 UTCEPSS rescore
  48. 2026-05-21 22:39 UTCEPSS rescore
  49. 2026-05-20 22:37 UTCEPSS rescore
  50. 2026-05-20 22:37 UTCEPSS rescore
  51. 2026-05-20 22:37 UTCEPSS rescore
  52. 2026-05-18 21:29 UTCEPSS rescore
  53. 2026-05-18 21:29 UTCEPSS rescore

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2012-1146?
CVE-2012-1146 is a medium vulnerability published on May 17, 2012. The memcgroupusageunregisterevent function in mm/memcontrol.c in the Linux kernel before 3.2.10 does not properly handle multiple events that are attached to the same eventfd, which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have…
When was CVE-2012-1146 disclosed?
CVE-2012-1146 was first published in the National Vulnerability Database on May 17, 2012, with the most recent update on April 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2012-1146 actively exploited?
CVE-2012-1146 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 40.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2012-1146?
CVE-2012-1146 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2012-1146?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2012-1146, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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