CVE-2024-42228
📋 TL;DR
This CVE involves an uninitialized variable vulnerability in the AMD GPU driver within the Linux kernel. Attackers could exploit this to cause kernel crashes or potentially execute arbitrary code with kernel privileges. Systems using AMD GPUs with affected Linux kernel versions are vulnerable.
💻 Affected Systems
- Linux kernel with AMD GPU driver (amdgpu)
📦 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 →⚠️ Risk & Real-World Impact
Worst Case
Kernel memory corruption leading to arbitrary code execution with kernel privileges, system compromise, and potential data exfiltration.
Likely Case
Kernel panic or system crash causing denial of service and potential data loss from unsaved work.
If Mitigated
System remains stable with no impact if patched or if exploit attempts are blocked by security controls.
🎯 Exploit Status
Exploitation requires local access to trigger the vulnerable code path. No public exploits have been reported as of the CVE publication.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Kernel versions containing the fixes from the provided git commits
Vendor Advisory: https://git.kernel.org/stable/c/3b505759447637dcccb50cbd98ec6f8d2a04fc46
Restart Required: Yes
Instructions:
1. Update Linux kernel to version containing the fix. 2. For distributions: Use package manager (apt/yum/dnf) to update kernel. 3. Reboot system to load new kernel.
🔧 Temporary Workarounds
Disable AMD GPU driver
linuxTemporarily disable the amdgpu kernel module to prevent exploitation
echo 'blacklist amdgpu' >> /etc/modprobe.d/blacklist-amdgpu.conf
update-initramfs -u
reboot
🧯 If You Can't Patch
- Restrict local user access to systems with AMD GPUs
- Implement strict privilege separation and limit users who can access GPU functionality
🔍 How to Verify
Check if Vulnerable:
Check kernel version and if amdgpu module is loaded: 'uname -r' and 'lsmod | grep amdgpu'Check Version:
uname -rVerify Fix Applied:
Verify kernel version is updated and contains the fix commits: 'uname -r' and check git commit history📡 Detection & Monitoring
Log Indicators:
- Kernel panic messages in /var/log/kern.log or dmesg
- AMD GPU driver crash logs
Network Indicators:
- No network indicators - local vulnerability
SIEM Query:
source="kernel" AND ("panic" OR "oops" OR "amdgpu")🔗 References
- https://git.kernel.org/stable/c/3b505759447637dcccb50cbd98ec6f8d2a04fc46
- https://git.kernel.org/stable/c/855ae72c20310e5402b2317fc537d911e87537ef
- https://git.kernel.org/stable/c/88a9a467c548d0b3c7761b4fd54a68e70f9c0944
- https://git.kernel.org/stable/c/9ee1534ecdd5b4c013064663502d7fde824d2144
- https://git.kernel.org/stable/c/d35cf41c8eb5d9fe95b21ae6ee2910f9ba4878e8
- https://git.kernel.org/stable/c/da6a85d197888067e8d38b5d22c986b5b5cab712
- https://git.kernel.org/stable/c/df02642c21c984303fe34c3f7d72965792fb1a15
- https://git.kernel.org/stable/c/f8f120b3de48b8b6bdf8988a9b334c2d61c17440
- https://git.kernel.org/stable/c/855ae72c20310e5402b2317fc537d911e87537ef
- https://git.kernel.org/stable/c/88a9a467c548d0b3c7761b4fd54a68e70f9c0944
- https://git.kernel.org/stable/c/f8f120b3de48b8b6bdf8988a9b334c2d61c17440
- https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
