CVEs-PoC/2020/CVE-2020-12771.md

### [CVE-2020-12771](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12771)
![](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 the Linux kernel through 5.6.11. btree_gc_coalesce in drivers/md/bcache/btree.c has a deadlock if a coalescing operation fails.

### POC

#### Reference
- https://www.oracle.com/security-alerts/cpuApr2021.html

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