CVEs-PoC/2021/CVE-2021-4204.md

### [CVE-2021-4204](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-4204)
![](https://img.shields.io/static/v1?label=Product&message=kernel&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=Affects%20Linux%20kernel%20v5.8%20or%20later%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-20%20-%20Improper%20Input%20Validation&color=brightgreen)

### Description

An out-of-bounds (OOB) memory access flaw was found in the Linux kernel's eBPF due to an Improper Input Validation. This flaw allows a local attacker with a special privilege to crash the system or leak internal information.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/ARPSyndicate/cvemon
- https://github.com/Metarget/metarget
- https://github.com/Mr-xn/Penetration_Testing_POC
- https://github.com/NaInSec/CVE-PoC-in-GitHub
- https://github.com/SYRTI/POC_to_review
- https://github.com/WhooAmii/POC_to_review
- https://github.com/XinLiu2025/openkylinsat
- https://github.com/k0mi-tg/CVE-POC
- https://github.com/kdn111/linux-kernel-exploitation
- https://github.com/khanhdn111/linux-kernel-exploitation
- https://github.com/khanhdz-06/linux-kernel-exploitation
- https://github.com/khanhdz191/linux-kernel-exploitation
- https://github.com/khanhhdz/linux-kernel-exploitation
- https://github.com/khanhhdz06/linux-kernel-exploitation
- https://github.com/khanhnd123/linux-kernel-exploitation
- https://github.com/khnhdz/linux-kernel-exploitation
- https://github.com/knd06/linux-kernel-exploitation
- https://github.com/lions2012/Penetration_Testing_POC
- https://github.com/manas3c/CVE-POC
- https://github.com/ndk06/linux-kernel-exploitation
- https://github.com/ndk191/linux-kernel-exploitation
- https://github.com/nomi-sec/PoC-in-GitHub
- https://github.com/ssr-111/linux-kernel-exploitation
- https://github.com/tr3ee/CVE-2021-4204
- https://github.com/trhacknon/Pocingit
- https://github.com/whoforget/CVE-POC
- https://github.com/wkhnh06/linux-kernel-exploitation
- https://github.com/xairy/linux-kernel-exploitation
- https://github.com/xuetusummer/Penetration_Testing_POC
- https://github.com/youwizard/CVE-POC
- https://github.com/zecool/cve