CVEs-PoC/2020/CVE-2020-36694.md

### [CVE-2020-36694](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-36694)
![](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

An issue was discovered in netfilter in the Linux kernel before 5.10. There can be a use-after-free in the packet processing context, because the per-CPU sequence count is mishandled during concurrent iptables rules replacement. This could be exploited with the CAP_NET_ADMIN capability in an unprivileged namespace. NOTE: cc00bca was reverted in 5.12.

### POC

#### Reference
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12

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