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CVE-2012-2127 Details

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

No CVSS 3.x data is available for this CVE.

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=905ad269c55fc62bee3da29f7b1d1efeba8aa1e1	CVE
https://bugzilla.novell.com/show_bug.cgi?id=757783	CVE	Exploit
https://bugzilla.redhat.com/show_bug.cgi?id=815188	CVE	Exploit
https://github.com/torvalds/linux/commit/905ad269c55fc62bee3da29f7b1d1efeba8aa1e1	CVE	ExploitPatch
http://ubuntu.com/usn/usn-1607-1	CVE
http://www.kernel.org/pub/linux/kernel/v3.x/	CVE
http://www.kernel.org/pub/linux/kernel/v3.x/patch-3.2.bz2	CVE	Patch
http://www.openwall.com/lists/oss-security/2012/04/20/25	CVE	Exploit
http://www.openwall.com/lists/oss-security/2012/04/22/1	CVE
http://www.securityfocus.com/bid/55774	CVE
http://www.ubuntu.com/usn/USN-1594-1	CVE
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=905ad269c55fc62bee3da29f7b1d1efeba8aa1e1	[email protected]
https://bugzilla.novell.com/show_bug.cgi?id=757783	[email protected]	Exploit
https://bugzilla.redhat.com/show_bug.cgi?id=815188	[email protected]	Exploit
https://github.com/torvalds/linux/commit/905ad269c55fc62bee3da29f7b1d1efeba8aa1e1	[email protected]	ExploitPatch
http://ubuntu.com/usn/usn-1607-1	[email protected]
http://www.kernel.org/pub/linux/kernel/v3.x/	[email protected]
http://www.kernel.org/pub/linux/kernel/v3.x/patch-3.2.bz2	[email protected]	Patch
http://www.openwall.com/lists/oss-security/2012/04/20/25	[email protected]	Exploit
http://www.openwall.com/lists/oss-security/2012/04/22/1	[email protected]
http://www.securityfocus.com/bid/55774	[email protected]
http://www.ubuntu.com/usn/USN-1594-1	[email protected]

see all 22 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-119	Improper Restriction of Operations within the Bounds of a Memory Buffer	[email protected]

Affected Products

Product	Versions
linux linux kernel	<= 3.1.10 3.1.1 3.1.2 3.1.3 3.1.4
CPE cpe:2.3:o:linux:linux_kernel:::::::: cpe:2.3:o:linux:linux_kernel:3.1.1:::::::* cpe:2.3:o:linux:linux_kernel:3.1.2:::::::* cpe:2.3:o:linux:linux_kernel:3.1.3:::::::* cpe:2.3:o:linux:linux_kernel:3.1.4:::::::* cpe:2.3:o:linux:linux_kernel:3.1.5:::::::* cpe:2.3:o:linux:linux_kernel:3.1.6:::::::* cpe:2.3:o:linux:linux_kernel:3.1.7:::::::* cpe:2.3:o:linux:linux_kernel:3.1.8:::::::* cpe:2.3:o:linux:linux_kernel:3.1.9:::::::* Remediation No remediation found in references.

Product

Versions

linux linux kernel

<= 3.1.10

3.1.1

3.1.2

3.1.3

3.1.4

CPE

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.1.1:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.1.2:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.1.3:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.1.4:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.1.5:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.1.6:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.1.7:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.1.8:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.1.9:*:*:*:*:*:*:*

Remediation

No remediation found in references.

Change History

6 change records found show changes

Date	Action	Recorded By
Jun 16, 2026	CVE Modified	[email protected]
Apr 29, 2026	Status Change	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Feb 13, 2023	CVE Modified	[email protected]
Jun 22, 2012	Initial Analysis	[email protected]