CVE-2011-2491

NONECVSS 0.0Trending — 4 sources updated this week

0.0

The Network Lock Manager (NLM) protocol implementation in the NFS client functionality in the Linux kernel before 3.0 allows local users to cause a denial of service (system hang) via a LOCK_UN flock system call.

CVSS v3: —
EG Score: 0.0(none)
EPSS: 21.0%
KEV: Not listed

Published

March 1, 2013

Last Modified

April 29, 2026

References (12)

secalert@redhathttp://ftp.osuosl.org/pub/linux/kernel/v3.0/ChangeLog-3.0
secalert@redhathttp://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=0b760113a3a155269a3fba93a409c640031dd68f
secalert@redhathttp://rhn.redhat.com/errata/RHSA-2011-1212.html
secalert@redhathttp://www.openwall.com/lists/oss-security/2011/06/23/6
secalert@redhathttps://bugzilla.redhat.com/show_bug.cgi?id=709393
secalert@redhathttps://github.com/torvalds/linux/commit/0b760113a3a155269a3fba93a409c640031dd68f
af854a3a-2127-422b-91ae-364da2661108http://ftp.osuosl.org/pub/linux/kernel/v3.0/ChangeLog-3.0
af854a3a-2127-422b-91ae-364da2661108http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=0b760113a3a155269a3fba93a409c640031dd68f
af854a3a-2127-422b-91ae-364da2661108http://rhn.redhat.com/errata/RHSA-2011-1212.html
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2011/06/23/6
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=709393
af854a3a-2127-422b-91ae-364da2661108https://github.com/torvalds/linux/commit/0b760113a3a155269a3fba93a409c640031dd68f

Patch Availability(15)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
ubuntu	linux-image-2.6.38-1209-omap4 (2.6.38-1209.17) @ natty	2026-05-29	ubuntu
ubuntu	linux-image-2.6.32-36-generic (2.6.32-36.79) @ lucid	2026-05-29	ubuntu
ubuntu	linux-image-2.6.38-13-powerpc-smp (2.6.38-13.52) @ natty	2026-05-29	ubuntu
ubuntu	linux-image-2.6.32-420-dove (2.6.32-420.38) @ maverick	2026-05-29	ubuntu
ubuntu	linux-image-2.6.38-13-generic (2.6.38-13.52~lucid1) @ lucid	2026-05-29	ubuntu
ubuntu	linux-image-2.6.35-31-generic (2.6.35-31.62~lucid1) @ lucid	2026-05-29	ubuntu
ubuntu	linux-image-2.6.35-903-omap4 (2.6.35-903.26) @ maverick	2026-05-29	ubuntu
ubuntu	linux-image-2.6.31-612-imx51 (2.6.31-612.30) @ lucid	2026-05-29	ubuntu
ubuntu	linux-image-2.6.32-340-ec2 (2.6.32-340.40) @ lucid	2026-05-29	ubuntu
ubuntu	linux-image-2.6.35-31-virtual (2.6.35-31.62) @ maverick	2026-05-29	ubuntu
ubuntu	linux-image-2.6.24-30-generic (2.6.24-30.96) @ hardy	2026-05-29	ubuntu
redhat	kernel-0:2.6.18-238.31.1.el5	2011-12-13	redhat
redhat	kernel-rt-0:2.6.33.9-rt31.75.el6rt	2011-09-12	redhat
redhat	kernel-0:2.6.18-274.3.1.el5	2011-09-06	redhat
redhat	kernel-0:2.6.32-131.12.1.el6	2011-08-23	redhat

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.

CWE-400Uncontrolled Resource Consumption (Denial of Service)

All Vendor Advisories

(15)

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 16× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:10 UTCepss_batch
2026-06-02 20:10 UTCepss_batch
2026-06-01 13:49 UTCepss_batch
2026-06-01 13:49 UTCepss_batch
2026-05-31 22:28 UTCepss_batch
2026-05-31 22:28 UTCepss_batch
2026-05-31 00:14 UTCepss_batch
2026-05-31 00:14 UTCepss_batch
2026-05-29 13:41 UTCepss_batch
2026-05-29 13:40 UTCepss_batch
2026-05-29 00:46 UTCEG score recompute
2026-05-29 00:46 UTCVendor advisory
2026-05-29 00:46 UTCGHSA enrichment
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-27 13:38 UTCepss_batch
2026-05-27 13:38 UTCepss_batch
2026-05-26 07:16 UTCepss_batch
2026-05-26 07:16 UTCepss_batch

Frequently asked(4)

What is CVE-2011-2491?

CVE-2011-2491 is a none vulnerability published on March 1, 2013. The Network Lock Manager (NLM) protocol implementation in the NFS client functionality in the Linux kernel before 3.0 allows local users to cause a denial of service (system hang) via a LOCK_UN flock system call.

When was CVE-2011-2491 disclosed?

CVE-2011-2491 was first published in the National Vulnerability Database on March 1, 2013, 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-2011-2491 actively exploited?

CVE-2011-2491 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 21.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

How do I remediate CVE-2011-2491?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2011-2491, 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.

Dependency Blast Radius

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CVE-2011-2491

Published

Last Modified

References (12)

Patch Availability(15)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

Frequently asked(4)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2011-2491?

Same vendor

Same CWE

CVE-2011-2491

📅 Published

🔄 Last Modified

🔗 References (12)

Patch Availability(15)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

❓ Frequently asked(4)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2011-2491?

🔗 Related CVEs(same vendor + same CWE)

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References (12)

Frequently asked(4)

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