cve/2023/CVE-2023-3777.md

### [CVE-2023-3777](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-3777)
![](https://img.shields.io/static/v1?label=Product&message=Kernel&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=5.9%3C%206.5%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-416%20Use%20After%20Free&color=brighgreen)

### Description

A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation.When nf_tables_delrule() is flushing table rules, it is not checked whether the chain is bound and the chain's owner rule can also release the objects in certain circumstances.We recommend upgrading past commit 6eaf41e87a223ae6f8e7a28d6e78384ad7e407f8.

### POC

#### Reference
- http://packetstormsecurity.com/files/175072/Kernel-Live-Patch-Security-Notice-LSN-0098-1.html
- http://packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.html

#### Github
- https://github.com/kylebuch8/vite-project-pfereact