cve/2025/CVE-2025-47712.md

### [CVE-2025-47712](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-47712)
![](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%20Advanced%20Virtualization&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=null&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=1.21.16%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=1.40.0%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=1.42.0%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Integer%20Overflow%20or%20Wraparound&color=brightgreen)

### Description

A flaw exists in the nbdkit "blocksize" filter that can be triggered by a specific type of client request. When a client requests block status information for a very large data range, exceeding a certain limit, it causes an internal error in the nbdkit, leading to a denial of service.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/ARPSyndicate/cve-scores
- https://github.com/fkie-cad/nvd-json-data-feeds