What is CVE-2013-4270?

CVE-2013-4270 is a Low severity Linux kernel vulnerability with a CVSS score of 3.6 out of 10, classified as a Improper Input Validation flaw (CWE-20). CVE-2013-4270 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2013-4270?

CVE-2013-4270 has a CVSS score of 3.6 out of 10, rated Low severity. The vector string is AV:L/AC:L/Au:N/C:P/I:P/A:N.

Is there a patch available for CVE-2013-4270?

No patch is currently available for CVE-2013-4270. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2013-4270 actively exploited?

CVE-2013-4270 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2013-4270

Low

The net_ctl_permissions function in net/sysctl_net.c in the Linux kernel before 3.11.5 does not properly determine uid and gid values, which allows local users to bypass intended /proc/sys/net restrictions via a crafted application.

Package Linux Kernel

Published 2013-12-09

Last modified 2026-04-29

CVSS version 2.0

Patch available

Awaiting data

CVSS 2.0 score

3.6

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:P/I:P/A:N

Weakness type

CWE-20

CVE-2013-4270 is a Improper Input Validation vulnerability

What is Improper Input Validation?

The product receives input but does not validate it correctly, allowing attackers to craft inputs that cause unexpected behavior. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2013-4270 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-2014-0100.html
Kernel.org
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.11.5
Ubuntu Security
http://www.ubuntu.com/usn/USN-2049-1
Red Hat
https://bugzilla.redhat.com/show_bug.cgi?id=1027752
Kernel patch commit
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=2433c8f094a008895e66f25bd1773cdb01c91d01
Patch
Kernel patch commit
https://github.com/torvalds/linux/commit/2433c8f094a008895e66f25bd1773cdb01c91d01
Patch

Details

CVE ID CVE-2013-4270

Severity Low

CVSS score 3.6 / 10

CVSS version 2.0

Published 2013-12-09

Modified 2026-04-29

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2013-4270?

CVE-2013-4270 is a Low severity Linux kernel vulnerability with a CVSS score of 3.6 out of 10 , classified as an Improper Input Validation flaw (CWE-20) . CVE-2013-4270 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2013-4270?

CVE-2013-4270 has a CVSS score of 3.6 out of 10, rated Low severity (CVSS 2.0). The vector string is AV:L/AC:L/Au:N/C:P/I:P/A:N.
Is there a patch available for CVE-2013-4270?

No patch is currently available for CVE-2013-4270. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2013-4270 actively exploited?

No — CVE-2013-4270 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Improper Input Validation (CWE-20)?

The product receives input but does not validate it correctly, allowing attackers to craft inputs that cause unexpected behavior. View CWE-20 on MITRE CWE →