cve/2023/CVE-2023-4004.md

### [CVE-2023-4004](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-4004)
![](https://img.shields.io/static/v1?label=Product&message=Red%20Hat%20Enterprise%20Linux%206&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Red%20Hat%20Enterprise%20Linux%207&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Red%20Hat%20Enterprise%20Linux%208&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Red%20Hat%20Enterprise%20Linux%208.2%20Advanced%20Update%20Support&color=blue)
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![](https://img.shields.io/static/v1?label=Product&message=Red%20Hat%20Enterprise%20Linux%208.2%20Update%20Services%20for%20SAP%20Solutions&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Red%20Hat%20Enterprise%20Linux%208.4%20Advanced%20Mission%20Critical%20Update%20Support&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Red%20Hat%20Enterprise%20Linux%208.4%20Telecommunications%20Update%20Service&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Red%20Hat%20Enterprise%20Linux%208.4%20Update%20Services%20for%20SAP%20Solutions&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Red%20Hat%20Enterprise%20Linux%208.6%20Extended%20Update%20Support&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Red%20Hat%20Enterprise%20Linux%209&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Red%20Hat%20Enterprise%20Linux%209.0%20Extended%20Update%20Support&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Red%20Hat%20Virtualization%204%20for%20Red%20Hat%20Enterprise%20Linux%208&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Use%20After%20Free&color=brighgreen)

### Description

A use-after-free flaw was found in the Linux kernel's netfilter in the way a user triggers the nft_pipapo_remove function with the element, without a NFT_SET_EXT_KEY_END. This issue could allow a local user to crash the system or potentially escalate their privileges on the system.

### 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
No PoCs found on GitHub currently.