Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | <= 3.1.10 |
Related Weaknesses (CWE)
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=
- http://ubuntu.com/usn/usn-1607-1
- http://www.kernel.org/pub/linux/kernel/v3.x/
- http://www.kernel.org/pub/linux/kernel/v3.x/patch-3.2.bz2Patch
- http://www.openwall.com/lists/oss-security/2012/04/20/25Exploit
- http://www.openwall.com/lists/oss-security/2012/04/22/1
- http://www.securityfocus.com/bid/55774
- http://www.ubuntu.com/usn/USN-1594-1
- https://bugzilla.novell.com/show_bug.cgi?id=757783Exploit
- https://bugzilla.redhat.com/show_bug.cgi?id=815188Exploit
- https://github.com/torvalds/linux/commit/905ad269c55fc62bee3da29f7b1d1efeba8aa1eExploitPatch
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=
- http://ubuntu.com/usn/usn-1607-1
- http://www.kernel.org/pub/linux/kernel/v3.x/
- http://www.kernel.org/pub/linux/kernel/v3.x/patch-3.2.bz2Patch
FAQ
What is CVE-2012-2127?
CVE-2012-2127 is a vulnerability with a CVSS score of 5.0 (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 (...
How severe is CVE-2012-2127?
CVE-2012-2127 has been rated MEDIUM with a CVSS base score of 5.0/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2012-2127?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.