cve/2009/CVE-2009-4895.md

### [CVE-2009-4895](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-4895)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brighgreen)

### Description

Race condition in the tty_fasync function in drivers/char/tty_io.c in the Linux kernel before 2.6.32.6 allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via unknown vectors, related to the put_tty_queue and __f_setown functions.  NOTE: the vulnerability was addressed in a different way in 2.6.32.9.

### POC

#### Reference
- http://www.ubuntu.com/usn/USN-1000-1

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