cve/2011/CVE-2011-2189.md

### [CVE-2011-2189](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-2189)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brightgreen)

### Description

net/core/net_namespace.c in the Linux kernel 2.6.32 and earlier does not properly handle a high rate of creation and cleanup of network namespaces, which makes it easier for remote attackers to cause a denial of service (memory consumption) via requests to a daemon that requires a separate namespace per connection, as demonstrated by vsftpd.

### POC

#### Reference
- http://kerneltrap.org/mailarchive/git-commits-head/2009/12/8/15289
- https://bugzilla.redhat.com/show_bug.cgi?id=711134
- https://bugzilla.redhat.com/show_bug.cgi?id=711245

#### Github
No PoCs found on GitHub currently.