> For the complete documentation index, see [llms.txt](https://hacking-notes.jord4n.pro/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://hacking-notes.jord4n.pro/privesc/kernel-exploitation/dirty-cow-kernel-exploit-linux-privilege-escalation.md).
# Kernel Exploitation (Dirty COW) - Linux Privilege Escalation
Kernel Exploitation (Dirty COW) notes for Linux privilege escalation, with enumeration steps, exploitation examples, and reporting-focused validation.
## What It Is
Kernel privilege escalation targets local vulnerabilities in the Linux kernel or distribution-specific patches. These exploits can be unstable, so version validation and lab testing matter before execution. This specific page focuses on **Kernel Exploitation (Dirty COW)** and keeps the exploitation flow practical: identify the condition, validate it safely, then run the smallest payload needed to prove impact.
## Enumeration
Start by confirming the local context and the exact misconfiguration before running the exploit path.
```bash
uname -a
cat /etc/os-release
lsb_release -a 2>/dev/null
```
## Examples
## Dirty COW Kernel Example
Use **lsb\_release -a** to identify the operating system version.
If you use the **search exploit** command, you will see many Kernel vulnerabilities associated with this version of Ubuntu.
In this case, we are interested in:
Run **script** and enter a password for the dirty user:
We managed to **change the password** in /etc/passwd of the firefart user:
We belong to the **root** group:
---
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