### [CVE-2023-40791](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-40791)
![](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)
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### Description

extract_user_to_sg in lib/scatterlist.c in the Linux kernel before 6.4.12 fails to unpin pages in a certain situation, as demonstrated by a WARNING for try_grab_page.

### POC

#### Reference
- https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.4.12

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