cve/2016/CVE-2016-2549.md

### [CVE-2016-2549](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2549)
![](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

sound/core/hrtimer.c in the Linux kernel before 4.4.1 does not prevent recursive callback access, which allows local users to cause a denial of service (deadlock) via a crafted ioctl call.

### POC

#### Reference
- http://www.ubuntu.com/usn/USN-2930-2
- http://www.ubuntu.com/usn/USN-2932-1

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