### [CVE-2021-4154](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-4154)
![](https://img.shields.io/static/v1?label=Product&message=kernel&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-416&color=brighgreen)

### Description

A use-after-free flaw was found in cgroup1_parse_param in kernel/cgroup/cgroup-v1.c in the Linux kernel's cgroup v1 parser. A local attacker with a user privilege could cause a privilege escalation by exploiting the fsconfig syscall parameter leading to a container breakout and a denial of service on the system.

### POC

#### Reference
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3b0462726e7ef281c35a7a4ae33e93ee2bc9975b

#### Github
- https://github.com/ARPSyndicate/cvemon
- https://github.com/HaxorSecInfec/autoroot.sh
- https://github.com/JlSakuya/Linux-Privilege-Escalation-Exploits
- https://github.com/Markakd/CVE-2021-4154
- https://github.com/Markakd/DirtyCred
- 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/a-roshbaik/Linux-Privilege-Escalation-Exploits
- https://github.com/a8stract-lab/SeaK
- https://github.com/bsauce/kernel-exploit-factory
- https://github.com/bsauce/kernel-security-learning
- https://github.com/k0mi-tg/CVE-POC
- https://github.com/lions2012/Penetration_Testing_POC
- https://github.com/manas3c/CVE-POC
- https://github.com/nomi-sec/PoC-in-GitHub
- https://github.com/purplewall1206/PET
- https://github.com/trhacknon/Pocingit
- https://github.com/veritas501/CVE-2021-4154
- https://github.com/whoforget/CVE-POC
- https://github.com/xuetusummer/Penetration_Testing_POC
- https://github.com/youwizard/CVE-POC
- https://github.com/zecool/cve