CVE-2012-0056

Name: CVE-2012-0056
Creator: NVD / NIST
Published: 2012-01-27T15:55:04.813+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 10.90%

Last modified Jun 16, 2026

CVE-2012-0056 is a vulnerability of currently unknown severity. The mem_write function in the Linux kernel before 3.2.2, when ASLR is disabled, does not properly check permissions when writing to /proc/<pid>/mem, which allows local users to gain privileges by modifying process memory, as demonstrated by Mempodipper.. EPSS estimates a 10.90% chance of exploitation in the next 30 days.

Description

The mem_write function in the Linux kernel before 3.2.2, when ASLR is disabled, does not properly check permissions when writing to /proc/<pid>/mem, which allows local users to gain privileges by modifying process memory, as demonstrated by Mempodipper.

Metrics

EPSS Probability

10.90%

95.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-264

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	>= 2.6.39, < 3.0.18
Linux	Linux Kernel	>= 3.1, < 3.2.2

References

http://blog.zx2c4.com/749Third Party Advisory
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=e268337dfe26dfc7efd422a804dbb27977a3ccccVendor Advisory
http://secunia.com/advisories/47708Broken Link
http://ubuntu.com/usn/usn-1336-1Third Party Advisory
http://www.kb.cert.org/vuls/id/470151Third Party Advisory, US Government Resource
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.2Vendor Advisory
http://www.openwall.com/lists/oss-security/2012/01/18/1Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2012/01/18/2Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2012/01/19/4Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2012/01/22/4Mailing List, Third Party Advisory
http://www.redhat.com/support/errata/RHSA-2012-0052.htmlThird Party Advisory
http://www.redhat.com/support/errata/RHSA-2012-0061.htmlThird Party Advisory
http://www.securityfocus.com/bid/51625Third Party Advisory, VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=782642Issue Tracking, Third Party Advisory
http://blog.zx2c4.com/749Third Party Advisory
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=e268337dfe26dfc7efd422a804dbb27977a3ccccVendor Advisory
http://secunia.com/advisories/47708Broken Link
http://ubuntu.com/usn/usn-1336-1Third Party Advisory
http://www.kb.cert.org/vuls/id/470151Third Party Advisory, US Government Resource
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.2Vendor Advisory
http://www.openwall.com/lists/oss-security/2012/01/18/1Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2012/01/18/2Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2012/01/19/4Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2012/01/22/4Mailing List, Third Party Advisory
http://www.redhat.com/support/errata/RHSA-2012-0052.htmlThird Party Advisory
http://www.redhat.com/support/errata/RHSA-2012-0061.htmlThird Party Advisory
http://www.securityfocus.com/bid/51625Third Party Advisory, VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=782642Issue Tracking, Third Party Advisory

Timeline

Published: Jan 27, 2012
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2012-0056?

How severe is CVE-2012-0056?

Severity scoring for CVE-2012-0056 is pending analysis. The EPSS model estimates a 10.90% probability of exploitation in the next 30 days.

How do I fix CVE-2012-0056?

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-2012-0056?

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

Scan your code now

Source: NVD / NIST