cve/2023/CVE-2023-2612.md

### [CVE-2023-2612](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-2612)
![](https://img.shields.io/static/v1?label=Product&message=ubuntu-linux&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=0%3C%2002b47547824b1cd0d55c6744f91886f04de8947e%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-667&color=brighgreen)

### Description

Jean-Baptiste Cayrou discovered that the shiftfs file system in the Ubuntu Linux kernel contained a race condition when handling inode locking in some situations. A local attacker could use this to cause a denial of service (kernel deadlock).

### POC

#### Reference
- http://packetstormsecurity.com/files/173087/Kernel-Live-Patch-Security-Notice-LSN-0095-1.html
- https://ubuntu.com/security/CVE-2023-2612
- https://ubuntu.com/security/notices/USN-6127-1

#### Github
- https://github.com/xairy/linux-kernel-exploitation