What is CVE-2013-4591?

CVE-2013-4591 is a Medium severity Linux kernel vulnerability with a CVSS score of 6.2 out of 10, classified as a Buffer Overflow flaw (CWE-119). CVE-2013-4591 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2013-4591?

CVE-2013-4591 has a CVSS score of 6.2 out of 10, rated Medium severity. The vector string is AV:L/AC:H/Au:N/C:C/I:C/A:C.

Is there a patch available for CVE-2013-4591?

No patch is currently available for CVE-2013-4591. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2013-4591 actively exploited?

CVE-2013-4591 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Buffer Overflow (CWE-119)?

The product performs operations on a memory buffer but reads or writes outside its intended boundaries. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/119.html

CVE-2013-4591

Medium

Buffer overflow in the __nfs4_get_acl_uncached function in fs/nfs/nfs4proc.c in the Linux kernel before 3.7.2 allows local users to cause a denial of service (memory corruption and system crash) or possibly have unspecified other impact via a getxattr system call for the system.nfs4_acl extended attribute of a pathname on an NFSv4 filesystem.

Package Linux Kernel

Published 2013-11-20

Last modified 2026-04-29

CVSS version 2.0

Patch available

Awaiting data

CVSS 2.0 score

6.2

out of 10

Medium

Attack Vector

Local

Attack Complexity

High

Privileges Required

User Interaction

Scope

Confidentiality

High

Integrity

Availability

Vector string

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

Weakness type

CWE-119

CVE-2013-4591 is a Buffer Overflow vulnerability

What is Buffer Overflow?

The product performs operations on a memory buffer but reads or writes outside its intended boundaries. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2013-4591 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Red Hat
http://rhn.redhat.com/errata/RHSA-2013-1645.html
Red Hat
http://rhn.redhat.com/errata/RHSA-2014-0284.html
Kernel.org
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.7.2
Openwall
http://www.openwall.com/lists/oss-security/2013/11/18/2
Securityfocus
http://www.securityfocus.com/bid/63791
Red Hat
https://bugzilla.redhat.com/show_bug.cgi?id=1031678
Kernel patch commit
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=7d3e91a89b7adbc2831334def9e494dd9892f9af
Patch
Kernel patch commit
https://github.com/torvalds/linux/commit/7d3e91a89b7adbc2831334def9e494dd9892f9af
Patch

Details

CVE ID CVE-2013-4591

Severity Medium

CVSS score 6.2 / 10

CVSS version 2.0

Published 2013-11-20

Modified 2026-04-29

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2013-4591?

CVE-2013-4591 is a Medium severity Linux kernel vulnerability with a CVSS score of 6.2 out of 10 , classified as a Buffer Overflow flaw (CWE-119) . CVE-2013-4591 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2013-4591?

CVE-2013-4591 has a CVSS score of 6.2 out of 10, rated Medium severity (CVSS 2.0). The vector string is AV:L/AC:H/Au:N/C:C/I:C/A:C.
Is there a patch available for CVE-2013-4591?

No patch is currently available for CVE-2013-4591. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2013-4591 actively exploited?

No — CVE-2013-4591 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Buffer Overflow (CWE-119)?

The product performs operations on a memory buffer but reads or writes outside its intended boundaries. View CWE-119 on MITRE CWE →