CVE-2012-2127
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…
Does this matter?
Lower severity and a low EPSS score (4.31%). Track it; it rarely justifies an emergency change on its own.
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 2.0
- 5.0 MEDIUMAV:N/AC:L/Au:N/C:N/I:N/A:P
- EPSS
- 4.31% probability · 91th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-119
- Affected
- linux/linux kernel
- Source
- secalert@redhat.com
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=905ad269c55fc62bee3da29f7b1d1efeba8aa1e1
- 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/905ad269c55fc62bee3da29f7b1d1efeba8aa1e1Exploit, Patch
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=905ad269c55fc62bee3da29f7b1d1efeba8aa1e1
- 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/905ad269c55fc62bee3da29f7b1d1efeba8aa1e1Exploit, Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.