CVE-2012-2136

Name: CVE-2012-2136
Creator: NVD / NIST
Published: 2012-08-09T10:29:46.87+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 0.58%

Last modified Jun 16, 2026

CVE-2012-2136 is a vulnerability of currently unknown severity. The sock_alloc_send_pskb function in net/core/sock.c in the Linux kernel before 3.4.5 does not properly validate a certain length value, which allows local users to cause a denial of service (heap-based buffer overflow and system crash) or possibly gain privileges by leveraging access to a TUN/TAP device.. EPSS estimates a 0.58% chance of exploitation in the next 30 days.

Description

The sock_alloc_send_pskb function in net/core/sock.c in the Linux kernel before 3.4.5 does not properly validate a certain length value, which allows local users to cause a denial of service (heap-based buffer overflow and system crash) or possibly gain privileges by leveraging access to a TUN/TAP device.

Metrics

EPSS Probability

0.58%

43.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	< 3.0.37
Linux	Linux Kernel	>= 3.1, < 3.2.23
Linux	Linux Kernel	>= 3.3, < 3.4.5

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=cc9b17ad29ecaa20bfe426a8d4dbfb94b13ff1ccBroken Link
http://rhn.redhat.com/errata/RHSA-2012-0743.htmlThird Party Advisory, VDB Entry
http://rhn.redhat.com/errata/RHSA-2012-1087.htmlThird Party Advisory
http://secunia.com/advisories/50807URL Repurposed
http://ubuntu.com/usn/usn-1529-1Third Party Advisory
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.4.5Vendor Advisory
http://www.securityfocus.com/bid/53721Third Party Advisory, VDB Entry
http://www.ubuntu.com/usn/USN-1535-1Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=816289Issue Tracking
https://github.com/torvalds/linux/commit/cc9b17ad29ecaa20bfe426a8d4dbfb94b13ff1ccExploit, Patch
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=cc9b17ad29ecaa20bfe426a8d4dbfb94b13ff1ccBroken Link
http://rhn.redhat.com/errata/RHSA-2012-0743.htmlThird Party Advisory, VDB Entry
http://rhn.redhat.com/errata/RHSA-2012-1087.htmlThird Party Advisory
http://secunia.com/advisories/50807URL Repurposed
http://ubuntu.com/usn/usn-1529-1Third Party Advisory
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.4.5Vendor Advisory
http://www.securityfocus.com/bid/53721Third Party Advisory, VDB Entry
http://www.ubuntu.com/usn/USN-1535-1Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=816289Issue Tracking
https://github.com/torvalds/linux/commit/cc9b17ad29ecaa20bfe426a8d4dbfb94b13ff1ccExploit, Patch

Timeline

Published: Aug 9, 2012
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2012-2136?

How severe is CVE-2012-2136?

Severity scoring for CVE-2012-2136 is pending analysis. The EPSS model estimates a 0.58% probability of exploitation in the next 30 days.

How do I fix CVE-2012-2136?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2012-2136?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST