cve/2025/CVE-2025-1125.md

### [CVE-2025-1125](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-1125)
![](https://img.shields.io/static/v1?label=Product&message=Red%20Hat%20Enterprise%20Linux%2010&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Red%20Hat%20Enterprise%20Linux%207&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Red%20Hat%20Enterprise%20Linux%208&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Red%20Hat%20Enterprise%20Linux%209&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Red%20Hat%20OpenShift%20Container%20Platform%204&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=null&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=0%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Out-of-bounds%20Write&color=brightgreen)

### Description

When reading data from a hfs filesystem, grub's hfs filesystem module uses user-controlled parameters from the filesystem metadata to calculate the internal buffers size, however it misses to properly check for integer overflows. A maliciouly crafted filesystem may lead some of those buffer size calculation to overflow, causing it to perform a grub_malloc() operation with a smaller size than expected. As a result the hfsplus_open_compressed_real() function will write past of the internal buffer length. This flaw may be leveraged to corrupt grub's internal critical data and may result in arbitrary code execution by-passing secure boot protections.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/yo-yo-yo-jbo/yo-yo-yo-jbo.github.io