cve/2023/CVE-2023-6207.md

### [CVE-2023-6207](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-6207)
![](https://img.shields.io/static/v1?label=Product&message=Firefox%20ESR&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Firefox&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Thunderbird&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=unspecified%3C%20115.5%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Version&message=unspecified%3C%20115.5.0%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Version&message=unspecified%3C%20120%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Use-after-free%20in%20ReadableByteStreamQueueEntry%3A%3ABuffer&color=brighgreen)

### Description

Ownership mismanagement led to a use-after-free in ReadableByteStreams This vulnerability affects Firefox < 120, Firefox ESR < 115.5.0, and Thunderbird < 115.5.

### POC

#### Reference
- https://bugzilla.mozilla.org/show_bug.cgi?id=1861344

#### Github
No PoCs found on GitHub currently.