What is CVE-2013-1956?

CVE-2013-1956 is a Low severity Linux kernel vulnerability with a CVSS score of 2.1 out of 10, classified as a Permissions, Privileges and Access Control flaw (CWE-264). CVE-2013-1956 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2013-1956?

CVE-2013-1956 has a CVSS score of 2.1 out of 10, rated Low severity. The vector string is AV:L/AC:L/Au:N/C:N/I:P/A:N.

Is there a patch available for CVE-2013-1956?

No patch is currently available for CVE-2013-1956. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2013-1956 actively exploited?

CVE-2013-1956 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Permissions, Privileges and Access Control (CWE-264)?

Weaknesses in this category are related to the management of permissions, privileges, and access controls. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/264.html

CVE-2013-1956

Low

The create_user_ns function in kernel/user_namespace.c in the Linux kernel before 3.8.6 does not check whether a chroot directory exists that differs from the namespace root directory, which allows local users to bypass intended filesystem restrictions via a crafted clone system call.

Package Linux Kernel

Published 2013-04-24

Last modified 2026-04-29

CVSS version 2.0

Patch available

Awaiting data

CVSS 2.0 score

2.1

out of 10

Low

Attack Vector

Local

Attack Complexity

Low

Privileges Required

User Interaction

Scope

Confidentiality

Low

Integrity

Availability

None

Vector string

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

Weakness type

CWE-264

CVE-2013-1956 is a Permissions, Privileges and Access Control vulnerability

What is Permissions, Privileges and Access Control?

Weaknesses in this category are related to the management of permissions, privileges, and access controls. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2013-1956 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel.org
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.6
Openwall
http://www.openwall.com/lists/oss-security/2013/04/16/11
Kernel patch commit
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=3151527ee007b73a0ebd296010f1c0454a919c7d
Patch
Kernel patch commit
https://github.com/torvalds/linux/commit/3151527ee007b73a0ebd296010f1c0454a919c7d
Patch

Details

CVE ID CVE-2013-1956

Severity Low

CVSS score 2.1 / 10

CVSS version 2.0

Published 2013-04-24

Modified 2026-04-29

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2013-1956?

CVE-2013-1956 is a Low severity Linux kernel vulnerability with a CVSS score of 2.1 out of 10 , classified as a Permissions, Privileges and Access Control flaw (CWE-264) . CVE-2013-1956 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2013-1956?

CVE-2013-1956 has a CVSS score of 2.1 out of 10, rated Low severity (CVSS 2.0). The vector string is AV:L/AC:L/Au:N/C:N/I:P/A:N.
Is there a patch available for CVE-2013-1956?

No patch is currently available for CVE-2013-1956. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2013-1956 actively exploited?

No — CVE-2013-1956 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Permissions, Privileges and Access Control (CWE-264)?

Weaknesses in this category are related to the management of permissions, privileges, and access controls. View CWE-264 on MITRE CWE →