cve-2024-1086-lpe

Technical analysis and proof-of-concept for CVE-2024-1086, a Linux kernel nf_tables use-after-free vulnerability leading to local privilege escalation. Includes vulnerability breakdown, affected versions, exploitation methodology, and mitigation guidance for research and educational purposes.

CVE-2024-1086 – Linux Kernel Local Privilege Escalation Overview

CVE-2024-1086 is a Local Privilege Escalation vulnerability in the Linux kernel’s nf_tables subsystem. The issue is caused by a use-after-free condition that can be triggered by a local, unprivileged user, potentially leading to root access.

The vulnerability affects specific Linux kernel versions where improper handling of netfilter rule objects allows memory corruption.

CVE ID: CVE-2024-1086

Component: Linux Kernel (nf_tables)

Vulnerability Type: Use-After-Free

Impact: Local Privilege Escalation (LPE)

Attack Vector: Local

Official references:

National Vulnerability Database (NVD): https://nvd.nist.gov/vuln/detail/CVE-2024-1086

Linux Kernel Security Advisory: https://www.kernel.org/

Technical Summary

The vulnerability exists in the nf_tables subsystem, which is responsible for packet filtering and firewall rule management in Linux.

Improper memory management during rule deletion and object handling can lead to a use-after-free condition. An attacker with local access can manipulate this behavior to:

Corrupt kernel memory

Achieve arbitrary code execution in kernel context

Escalate privileges to root

This repository provides technical analysis and a proof-of-concept for educational and research purposes.

Affected Systems

The vulnerability impacts Linux kernel versions prior to the official security patch release in 2024.

To check your kernel version:

uname -r

If you are running a vulnerable version, update immediately.

Repository Structure cve-2024-1086-lpe/ │ ├── README.md ├── DETAILED_ANALYSIS.md ├── images/ │ ├── kernel_crash.png │ ├── memory_layout.png │ └── privilege_escalation.png └── exploit.c

README.md – Overview and summary

DETAILED_ANALYSIS.md – Full technical breakdown with images

images/ – Screenshots and diagrams

exploit.c – Proof-of-concept code

Lab Environment

Recommended test setup:

Isolated virtual machine (VirtualBox / VMware)

Vulnerable Linux kernel version

Non-production environment

Snapshot enabled before testing

Never test this on production systems.

Mitigation

To protect against CVE-2024-1086:

Update to the latest stable Linux kernel

Apply official security patches

Restrict unprivileged user access

Disable unneeded nf_tables functionality if not required

Always follow official kernel security advisories for patch details.

Disclaimer

This repository is intended strictly for:

Academic study

Security research

Defensive training

Any misuse of this information is the sole responsibility of the user. The author does not promote or support unauthorized access to systems.

Author

Sandesh Security Research | Linux Kernel Exploitation Lab