cve/2019/CVE-2019-9857.md

### [CVE-2019-9857](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-9857)
![](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

In the Linux kernel through 5.0.2, the function inotify_update_existing_watch() in fs/notify/inotify/inotify_user.c neglects to call fsnotify_put_mark() with IN_MASK_CREATE after fsnotify_find_mark(), which will cause a memory leak (aka refcount leak). Finally, this will cause a denial of service.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/hiboma/hiboma