CVEs-PoC/2021/CVE-2021-26958.md

### [CVE-2021-26958](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26958)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
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### Description

An issue was discovered in the xcb crate through 2021-02-04 for Rust. It has a soundness violation because transmutation to the wrong type can happen after xcb::base::cast_event uses std::mem::transmute to return a reference to an arbitrary type.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/SpearTip-Cyber-Counterintelligence/Zirconium
- https://github.com/byinarie/Zirconium