### [CVE-2017-18249](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-18249)
![](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

The add_free_nid function in fs/f2fs/node.c in the Linux kernel before 4.12 does not properly track an allocated nid, which allows local users to cause a denial of service (race condition) or possibly have unspecified other impact via concurrent threads.

### POC

#### Reference
- https://usn.ubuntu.com/3932-1/

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