CVE-2024-41092 – This CVE describes a use-after-free vulnerabili... (How to Fix)

📋 TL;DR

This CVE describes a use-after-free vulnerability in the Linux kernel's i915 graphics driver. It allows local attackers to potentially crash the system or execute arbitrary code by exploiting a race condition during fence register revocation. Affected systems are those running vulnerable Linux kernel versions with Intel integrated graphics.

💻 Affected Systems

Products:

Linux kernel with Intel i915 graphics driver

Versions: Linux kernel versions containing commits between 63baf4f3d587 and 24bb052d3dd4

Operating Systems: Linux distributions using affected kernel versions

Default Config Vulnerable: ⚠️ Yes

Notes: Requires Intel integrated graphics hardware and i915 driver usage. Systems without Intel graphics or with discrete graphics only are not affected.

📦 What is this software?

Linux Kernel by Linux

The Linux Kernel is the core component of the Linux operating system, serving as the critical interface between computer hardware and software processes. As the heart of millions of servers, cloud infrastructure, embedded systems, Android devices, and IoT deployments worldwide, the Linux Kernel mana...

Learn more about Linux Kernel →

Linux Kernel by Linux

The Linux Kernel is the core component of the Linux operating system, serving as the critical interface between computer hardware and software processes. As the heart of millions of servers, cloud infrastructure, embedded systems, Android devices, and IoT deployments worldwide, the Linux Kernel mana...

Learn more about Linux Kernel →

Linux Kernel by Linux

The Linux Kernel is the core component of the Linux operating system, serving as the critical interface between computer hardware and software processes. As the heart of millions of servers, cloud infrastructure, embedded systems, Android devices, and IoT deployments worldwide, the Linux Kernel mana...

Learn more about Linux Kernel →

Linux Kernel by Linux

The Linux Kernel is the core component of the Linux operating system, serving as the critical interface between computer hardware and software processes. As the heart of millions of servers, cloud infrastructure, embedded systems, Android devices, and IoT deployments worldwide, the Linux Kernel mana...

Learn more about Linux Kernel →

Linux Kernel by Linux

The Linux Kernel is the core component of the Linux operating system, serving as the critical interface between computer hardware and software processes. As the heart of millions of servers, cloud infrastructure, embedded systems, Android devices, and IoT deployments worldwide, the Linux Kernel mana...

Learn more about Linux Kernel →

⚠️ Risk & Real-World Impact

🔴

Worst Case

Local privilege escalation to kernel-level code execution, leading to complete system compromise.

🟠

Likely Case

Kernel panic or system crash causing denial of service.

🟢

If Mitigated

System remains stable with proper patching; unpatched systems risk crashes during graphics operations.

🌐 Internet-Facing: LOW - Requires local access to exploit.

🏢 Internal Only: MEDIUM - Local users or malicious processes could exploit this vulnerability.

🎯 Exploit Status

Public PoC: ✅ No

Weaponized: UNKNOWN

Unauthenticated Exploit: ✅ No

Complexity: MEDIUM

Exploitation requires local access and knowledge of kernel internals. Race condition makes timing-dependent exploitation challenging.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Linux kernel with commit 24bb052d3dd4 or later

Vendor Advisory: https://git.kernel.org/stable/c/24bb052d3dd499c5956abad5f7d8e4fd07da7fb1

Restart Required: Yes

Instructions:

1. Update Linux kernel to version containing fix commit 24bb052d3dd4
2. Reboot system to load new kernel
3. Verify kernel version with 'uname -r'

🔧 Temporary Workarounds

Disable i915 driver

linux

Prevent loading of vulnerable i915 graphics driver

echo 'blacklist i915' >> /etc/modprobe.d/blacklist-i915.conf
update-initramfs -u
reboot

🧯 If You Can't Patch

Restrict local user access to systems with vulnerable kernels
Monitor for kernel panic logs and investigate any crashes related to i915 driver

🔍 How to Verify

Check if Vulnerable:

Check if kernel version is between affected commits: 'uname -r' and compare with kernel git history

Check Version:

uname -r

Verify Fix Applied:

Verify kernel contains commit 24bb052d3dd4: 'git log --oneline | grep 24bb052d3dd4' or check kernel version is newer than fix

📡 Detection & Monitoring

Log Indicators:

Kernel panic messages containing 'i915_vma_revoke_fence'
GEM_BUG_ON errors in dmesg
System crashes during graphics operations

Network Indicators:

None - local vulnerability only

SIEM Query:

source="kernel" AND ("i915_vma_revoke_fence" OR "GEM_BUG_ON" OR "kernel BUG at drivers/gpu/drm/i915/gt/intel_ggtt_fencing.c")

📊 Metadata

CVE ID: CVE-2024-41092

CVSS v3 Score: 7.8 (HIGH)

CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE: CWE-416

Published: July 29, 2024

Last Updated: November 3, 2025

🔗 References

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🔗 Related Vulnerabilities

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