cve/2017/CVE-2017-12193.md

### [CVE-2017-12193](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-12193)
![](https://img.shields.io/static/v1?label=Product&message=Linux%20kernel%20since%203.13%20up%20to%204.14%20(not%20including)&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3D%20Linux%20kernel%20since%203.13%20up%20to%204.14%20(not%20including)%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-476&color=brighgreen)

### Description

The assoc_array_insert_into_terminal_node function in lib/assoc_array.c in the Linux kernel before 4.13.11 mishandles node splitting, which allows local users to cause a denial of service (NULL pointer dereference and panic) via a crafted application, as demonstrated by the keyring key type, and key addition and link creation operations.

### POC

#### Reference
- https://usn.ubuntu.com/3698-1/
- https://usn.ubuntu.com/3698-2/

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