What is CVE-2012-2127?

CVE-2012-2127 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.0 out of 10, classified as a Buffer Overflow flaw (CWE-119). CVE-2012-2127 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2012-2127?

CVE-2012-2127 has a CVSS score of 5.0 out of 10, rated Medium severity. The vector string is AV:N/AC:L/Au:N/C:N/I:N/A:P.

Is there a patch available for CVE-2012-2127?

No patch is currently available for CVE-2012-2127. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2012-2127 actively exploited?

CVE-2012-2127 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Buffer Overflow (CWE-119)?

The product performs operations on a memory buffer but reads or writes outside its intended boundaries. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/119.html

CVE-2012-2127

Medium

fs/proc/root.c in the procfs implementation in the Linux kernel before 3.2 does not properly interact with CLONE_NEWPID clone system calls, which allows remote attackers to cause a denial of service (reference leak and memory consumption) by making many connections to a daemon that uses PID namespaces to isolate clients, as demonstrated by vsftpd.

Package Linux Kernel

Published 2012-06-21

Last modified 2026-04-29

CVSS version 2.0

Patch available

Awaiting data

CVSS 2.0 score

5.0

out of 10

Medium

Attack Vector

Network

Attack Complexity

Low

Privileges Required

User Interaction

Scope

Confidentiality

Low

Integrity

None

Availability

Vector string

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

Weakness type

CWE-119

CVE-2012-2127 is a Buffer Overflow vulnerability

What is Buffer Overflow?

The product performs operations on a memory buffer but reads or writes outside its intended boundaries. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2012-2127 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Ubuntu Security
http://ubuntu.com/usn/usn-1607-1
Kernel.org
http://www.kernel.org/pub/linux/kernel/v3.x/
Openwall
http://www.openwall.com/lists/oss-security/2012/04/20/25

Exploit
Openwall
http://www.openwall.com/lists/oss-security/2012/04/22/1
Securityfocus
http://www.securityfocus.com/bid/55774
Ubuntu Security
http://www.ubuntu.com/usn/USN-1594-1
Bugzilla
https://bugzilla.novell.com/show_bug.cgi?id=757783

Exploit
Red Hat
https://bugzilla.redhat.com/show_bug.cgi?id=815188

Exploit
Kernel patch commit
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=905ad269c55fc62bee3da29f7b1d1efeba8aa1e1
Patch
Kernel patch commit
http://www.kernel.org/pub/linux/kernel/v3.x/patch-3.2.bz2
Patch
Kernel patch commit
https://github.com/torvalds/linux/commit/905ad269c55fc62bee3da29f7b1d1efeba8aa1e1
Patch

Details

CVE ID CVE-2012-2127

Severity Medium

CVSS score 5.0 / 10

CVSS version 2.0

Published 2012-06-21

Modified 2026-04-29

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2012-2127?

CVE-2012-2127 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.0 out of 10 , classified as a Buffer Overflow flaw (CWE-119) . CVE-2012-2127 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2012-2127?

CVE-2012-2127 has a CVSS score of 5.0 out of 10, rated Medium severity (CVSS 2.0). The vector string is AV:N/AC:L/Au:N/C:N/I:N/A:P.
Is there a patch available for CVE-2012-2127?

No patch is currently available for CVE-2012-2127. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2012-2127 actively exploited?

No — CVE-2012-2127 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Buffer Overflow (CWE-119)?

The product performs operations on a memory buffer but reads or writes outside its intended boundaries. View CWE-119 on MITRE CWE →