What is CVE-2012-2136?

CVE-2012-2136 is a High severity Linux kernel vulnerability with a CVSS score of 7.2 out of 10, classified as a Improper Input Validation flaw (CWE-20). CVE-2012-2136 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2012-2136?

CVE-2012-2136 has a CVSS score of 7.2 out of 10, rated High severity. The vector string is AV:L/AC:L/Au:N/C:C/I:C/A:C.

Is there a patch available for CVE-2012-2136?

No patch is currently available for CVE-2012-2136. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2012-2136 actively exploited?

CVE-2012-2136 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2012-2136

High

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.

Package Linux Kernel

Published 2012-08-09

Last modified 2026-04-29

CVSS version 2.0

Patch available

Awaiting data

CVSS 2.0 score

7.2

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

User Interaction

Scope

Confidentiality

Low

Integrity

Availability

Vector string

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

Weakness type

CWE-20

CVE-2012-2136 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-2012-2136 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-2012-0743.html

Third Party Advisory VDB Entry
Red Hat
http://rhn.redhat.com/errata/RHSA-2012-1087.html

Third Party Advisory
Secunia
http://secunia.com/advisories/50807

URL Repurposed
Ubuntu Security
http://ubuntu.com/usn/usn-1529-1

Third Party Advisory
Kernel.org
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.4.5

Vendor Advisory
Securityfocus
http://www.securityfocus.com/bid/53721

Third Party Advisory VDB Entry
Ubuntu Security
http://www.ubuntu.com/usn/USN-1535-1

Third Party Advisory
Red Hat
https://bugzilla.redhat.com/show_bug.cgi?id=816289

Issue Tracking
Kernel patch commit
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=cc9b17ad29ecaa20bfe426a8d4dbfb94b13ff1cc
Patch
Kernel patch commit
https://github.com/torvalds/linux/commit/cc9b17ad29ecaa20bfe426a8d4dbfb94b13ff1cc
Patch

Details

CVE ID CVE-2012-2136

Severity High

CVSS score 7.2 / 10

CVSS version 2.0

Published 2012-08-09

Modified 2026-04-29

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2012-2136?

CVE-2012-2136 is a High severity Linux kernel vulnerability with a CVSS score of 7.2 out of 10 , classified as an Improper Input Validation flaw (CWE-20) . CVE-2012-2136 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2012-2136?

CVE-2012-2136 has a CVSS score of 7.2 out of 10, rated High severity (CVSS 2.0). The vector string is AV:L/AC:L/Au:N/C:C/I:C/A:C.
Is there a patch available for CVE-2012-2136?

No patch is currently available for CVE-2012-2136. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2012-2136 actively exploited?

No — CVE-2012-2136 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 →