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CVE-2022-0847 PoC — Linux kernel 安全漏洞

Source
Associated Vulnerability
Title:Linux kernel 安全漏洞 (CVE-2022-0847)
Description:Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel 存在安全漏洞,该漏洞源于新管道缓冲区结构的“flag”变量在 Linux 内核中的 copy_page_to_iter_pipe 和 push_pipe 函数中缺乏正确初始化。非特权本地用户利用该漏洞可以提升权限至root。以下产品和版本受到影响:Linux Kernel 5.8-5.16.11、5.8-5.15.25、5.8-5.10.102。
Readme
# CVE-2022-0847-dirty-pipe-checker
Bash script to check for CVE-2022-0847 
[Dirty Pipe](https://dirtypipe.cm4all.com/)

<img src="https://f.hubspotusercontent-eu1.net/hubfs/25393921/dirty_pipe_option_2.png">

## Abstract
This is the story of CVE-2022-0847, a vulnerability in the Linux kernel since 5.8 which allows overwriting data in arbitrary read-only files. This leads to privilege escalation because unprivileged processes can inject code into root processes.

It is similar to CVE-2016-5195 “Dirty Cow” but is easier to exploit.

The vulnerability was fixed in Linux 5.16.11, 5.15.25 and 5.10.102.

# How to use it

## First
```
git clone https://github.com/muhammad1596/CVE-2022-0847-dirty-pipe-checker.git
```
## Second 
```
cd CVE-2022-0847-dirty-pipe-checker
```
## Third
```
chmod +x dpipe.sh
```
## Finally
Check current kernel version

```
./dpipe.sh
```

Check specific kernel version

```
./dpipe.sh 5.10.11
```
File Snapshot

[4.0K] /data/pocs/939328ec462907c33d21ce3584e02334c7b1494c ├── [ 1] dirty-pipe-checker.sh ├── [1.8K] dpipe.sh ├── [ 932] README.md └── [ 970] test.sh 0 directories, 4 files
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