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…
- Published
- Updated
- Reserved
- Assigned by
- redhat
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.
Timeline
ID reserved
By redhat
- 3 months later
· 3 months later
Published
- 12 years later
· 12 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
- EPSS (exploitation in 30 days)
- 4.3% · top 8.9% of all CVEs (8 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.0.
Weakness
Affected products
n/a
- affected n/a
References (11)
- https://github.com/torvalds/linux/commit/905ad269c55fc62bee3da29f7b1d1efeba8aa1e1 (opens in a new tab)x_refsource_CONFIRMx_transferred
- USN-1594-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- [oss-security] 20120422 Re: Re: CVE request: pid namespace leak in kernel 3.0 and 3.1 (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- https://bugzilla.redhat.com/show_bug.cgi?id=815188 (opens in a new tab)x_refsource_CONFIRMx_transferred
- USN-1607-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- http://www.kernel.org/pub/linux/kernel/v3.x/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- 55774 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=905ad269c55fc62bee3da29f7b1d1efeba8aa1e1 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://bugzilla.novell.com/show_bug.cgi?id=757783 (opens in a new tab)x_refsource_CONFIRMx_transferred
- [oss-security] 20120420 Re: CVE request: pid namespace leak in kernel 3.0 and 3.1 (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- http://www.kernel.org/pub/linux/kernel/v3.x/patch-3.2.bz2 (opens in a new tab)x_refsource_CONFIRMx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2012-2127)Record last updated .