CVE-2022-0847 PoC — Linux kernel 安全漏洞

Source

https://github.com/si1ent-le/CVE-2022-0847

Associated Vulnerability

Title:Linux kernel 安全漏洞 (CVE-2022-0847)
Description:A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe and push_pipe functions in the Linux kernel and could thus contain stale values. An unprivileged local user could use this flaw to write to pages in the page cache backed by read only files and as such escalate their privileges on the system.

Description

CVE-2022-0487

Readme

### CVE-2022-0847

参考：[Dirty Pipe](https://dirtypipe.cm4all.com/)漏洞介绍

### PoC

1.查看内核
```
uname -r
```

![image-20220308111450226](image-20220308111450226.png)

2.编译并执行

```
gcc poc.c
```
![image-20220308111450226](image-20220308111637000.png)

File Snapshot

Remarks

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