cve/2024/CVE-2024-3855.md

### [CVE-2024-3855](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-3855)
![](https://img.shields.io/static/v1?label=Product&message=Firefox&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=unspecified%3C%20125%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Incorrect%20JIT%20optimization%20of%20MSubstr%20leads%20to%20out-of-bounds%20reads&color=brighgreen)

### Description

In certain cases the JIT incorrectly optimized MSubstr operations, which led to out-of-bounds reads. This vulnerability affects Firefox < 125.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/5211-yx/javascript_fuzzer
- https://github.com/googleprojectzero/fuzzilli
- https://github.com/zhangjiahui-buaa/MasterThesis