cve/2024/CVE-2024-49955.md

### [CVE-2024-49955](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-49955)
![](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=4.17%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=fa93854f7a7ed63d054405bf3779247d5300edd3%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:ACPI: battery: Fix possible crash when unregistering a battery hookWhen a battery hook returns an error when adding a new battery, thenthe battery hook is automatically unregistered.However the battery hook provider cannot know that, so it will latercall battery_hook_unregister() on the already unregistered batteryhook, resulting in a crash.Fix this by using the list head to mark already unregistered batteryhooks as already being unregistered so that they can be ignored bybattery_hook_unregister().

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/w4zu/Debian_security