CVE-2011-4081

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: 0%CVSS: 5.5Exploit: NoneExposed: 0

A fix is available — apply it.

crypto/ghash-generic.c in the Linux kernel before 3.1 allows local users to cause a denial of service (NULL pointer dereference and OOPS) or possibly have unspecified other impact by triggering a failed or missing ghash_setkey function call, followed by a (1) ghash_update function call or (2) ghash_final function call, as demonstrated by a write operation on an AF_ALG socket.

CVSS v3
5.5
EG Score
5.5(medium)
EPSS
36.5%
KEV
Not listed

Published

May 24, 2012

Last Modified

April 29, 2026

Advisory Details (4)

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

commit 7ed47b7d142e (torvalds/linux)

Fix landed in torvalds/linux commit 7ed47b7d142e — awaiting tagged release

https://github.com/torvalds/linux/commit/7ed47b7d142ec99ad6880bbbec51e9f12b3af74c
redhat Patch Available

749475 – (CVE-2011-4081) CVE-2011-4081 kernel: crypto: ghash: null pointer deref if no key is set

Affected: Red Hat Enterprise Linux 4, and 5 as they did not include support for the GHASH message digest algorithm. This has been addres

https://bugzilla.redhat.com/show_bug.cgi?id=749475
generic

oss-security - Re: CVE request: kernel: crypto: ghash: null pointer deref if no key is set

http://www.openwall.com/lists/oss-security/2011/10/27/2
generic
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.1

Patch Availability(14)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-image-3.0.0-14-generic-pae (3.0.0-14.23) @ oneiric2026-05-29ubuntu
ubuntulinux-image-2.6.38-13-generic (2.6.38-13.53~lucid1) @ lucid2026-05-29ubuntu
ubuntulinux-image-2.6.35-31-generic (2.6.35-31.63~lucid1) @ lucid2026-05-29ubuntu
ubuntulinux-image-2.6.38-13-powerpc-smp (2.6.38-13.53) @ natty2026-05-29ubuntu
ubuntulinux-image-2.6.32-421-dove (2.6.32-421.39) @ maverick2026-05-29ubuntu
ubuntulinux-image-2.6.35-31-virtual (2.6.35-31.63) @ maverick2026-05-29ubuntu
ubuntulinux-image-2.6.32-37-versatile (2.6.32-37.81) @ lucid2026-05-29ubuntu
ubuntulinux-image-2.6.38-1209-omap4 (2.6.38-1209.18) @ natty2026-05-29ubuntu
ubuntulinux-image-3.0.0-1206-omap4 (3.0.0-1206.13) @ oneiric2026-05-29ubuntu
ubuntulinux-image-2.6.35-903-omap4 (2.6.35-903.28) @ maverick2026-05-29ubuntu
ubuntulinux-image-3.0.0-14-virtual (3.0.0-14.23~lucid1) @ lucid2026-05-29ubuntu
ubuntulinux-image-2.6.32-341-ec2 (2.6.32-341.42) @ lucid2026-05-29ubuntu
redhatkernel-0:2.6.32-220.7.1.el62012-03-06redhat
redhatkernel-rt-0:2.6.33.9-rt31.79.el6rt2012-01-10redhat

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

(14)

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 10× in last 7d / 44× 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
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  1. 2026-06-19 19:22 UTCEPSS rescore
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  39. 2026-05-29 04:29 UTCEG score recompute
  40. 2026-05-29 04:29 UTCVendor advisory
  41. 2026-05-29 04:29 UTCGHSA enrichment
  42. 2026-05-28 13:42 UTCEPSS rescore
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  45. 2026-05-27 13:38 UTCEPSS rescore
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  61. 2026-05-18 21:29 UTCEPSS rescore
  62. 2026-05-18 21:29 UTCEPSS rescore

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2011-4081?
CVE-2011-4081 is a medium vulnerability published on May 24, 2012. crypto/ghash-generic.c in the Linux kernel before 3.1 allows local users to cause a denial of service (NULL pointer dereference and OOPS) or possibly have unspecified other impact by triggering a failed or missing ghashsetkey function call, followed by a (1) ghashupdate function call or (2)…
When was CVE-2011-4081 disclosed?
CVE-2011-4081 was first published in the National Vulnerability Database on May 24, 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-2011-4081 actively exploited?
CVE-2011-4081 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 36.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2011-4081?
CVE-2011-4081 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2011-4081?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2011-4081, 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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