What is CVE-2011-2491?

CVE-2011-2491 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.9 out of 10, classified as a Uncontrolled Resource Consumption flaw (CWE-400). CVE-2011-2491 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2011-2491?

CVE-2011-2491 has a CVSS score of 4.9 out of 10, rated Medium severity. The vector string is AV:L/AC:L/Au:N/C:N/I:N/A:C.

Is there a patch available for CVE-2011-2491?

Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2011-2491 patch availability.

Is CVE-2011-2491 actively exploited?

CVE-2011-2491 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Uncontrolled Resource Consumption (CWE-400)?

The product does not properly control the amount of resources it consumes, leading to exhaustion. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/400.html

CVE-2011-2491

Medium

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.

Package Linux Kernel

Published 2013-03-01

Last modified 2026-04-29

CVSS version 2.0

Patch available

Awaiting data

CVSS 2.0 score

4.9

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

User Interaction

Scope

Confidentiality

Low

Integrity

None

Availability

Vector string

AV:L/AC:L/Au:N/C:N/I:N/A:C

Weakness type

CWE-400

CVE-2011-2491 is a Uncontrolled Resource Consumption vulnerability

What is Uncontrolled Resource Consumption?

The product does not properly control the amount of resources it consumes, leading to exhaustion. Learn more on MITRE CWE

References

6 total

Openwall
http://www.openwall.com/lists/oss-security/2011/06/23/6

Mailing List Patch Third Party Advisory
Red Hat
https://bugzilla.redhat.com/show_bug.cgi?id=709393

Issue Tracking Patch Third Party Advisory
GitHub
https://github.com/torvalds/linux/commit/0b760113a3a155269a3fba93a409c640031dd68f

Patch Third Party Advisory
Ftp
http://ftp.osuosl.org/pub/linux/kernel/v3.0/ChangeLog-3.0

Broken Link
Kernel Git
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=0b760113a3a155269a3fba93a409c640031dd68f

Showing 5 of 6 references View all on NVD

Details

CVE ID CVE-2011-2491

Severity Medium

CVSS score 4.9 / 10

CVSS version 2.0

Published 2013-03-01

Modified 2026-04-29

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2011-2491?

CVE-2011-2491 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.9 out of 10 , classified as an Uncontrolled Resource Consumption flaw (CWE-400) . CVE-2011-2491 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2011-2491?

CVE-2011-2491 has a CVSS score of 4.9 out of 10, rated Medium severity (CVSS 2.0). The vector string is AV:L/AC:L/Au:N/C:N/I:N/A:C.
Is there a patch available for CVE-2011-2491?

Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2011-2491 patch availability.
Is CVE-2011-2491 actively exploited?

No. CVE-2011-2491 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.