### [CVE-2021-43313](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43313)
![](https://img.shields.io/static/v1?label=Product&message=upx&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=upx%20before%204.0.0-git-c6b9e3c62d15%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-119&color=brightgreen)

### Description

A heap-based buffer overflow was discovered in upx, during the variable 'bucket' points to an inaccessible address. The issue is being triggered in the function PackLinuxElf32::invert_pt_dynamic at p_lx_elf.cpp:1688.

### POC

#### Reference
- https://github.com/upx/upx/issues/378

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