cve/2020/CVE-2020-6838.md

### [CVE-2020-6838](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-6838)
![](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)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brighgreen)

### Description

In mruby 2.1.0, there is a use-after-free in hash_values_at in mrbgems/mruby-hash-ext/src/hash-ext.c.

### POC

#### Reference
- https://github.com/mruby/mruby/issues/4926
- https://github.com/mruby/mruby/issues/4926

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