cve/2025/CVE-2025-21945.md

### [CVE-2025-21945](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-21945)
![](https://img.shields.io/static/v1?label=Product&message=Linux&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=0626e6641f6b467447c81dd7678a69c66f7746cf%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=5.15%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=blue)

### Description

In the Linux kernel, the following vulnerability has been resolved:ksmbd: fix use-after-free in smb2_lockIf smb_lock->zero_len has value, ->llist of smb_lock is not delete andflock is old one. It will cause use-after-free on error handlingroutine.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/runwhen-contrib/helm-charts
- https://github.com/w4zu/Debian_security