CVE-2024-46806
📋 TL;DR
A division-by-zero vulnerability in the AMD GPU driver for Linux kernel could cause kernel panic or system crash when processing invalid partition modes. This affects Linux systems with AMD GPUs using the amdgpu driver. Attackers could potentially trigger denial of service.
💻 Affected Systems
- Linux kernel with AMD GPU support
📦 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 panic leading to system crash and denial of service, requiring physical or remote console access to reboot
Likely Case
System crash requiring reboot, potentially causing service disruption and data loss in unsaved work
If Mitigated
Minor service interruption if systems have automatic recovery mechanisms
🎯 Exploit Status
Requires ability to interact with GPU driver, likely through local access or compromised application. No public exploit code known.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Linux kernel with commit 1a00f2ac82d6bc6689388c7edcd2a4bd82664f3c or later
Vendor Advisory: https://git.kernel.org/stable/c/1a00f2ac82d6bc6689388c7edcd2a4bd82664f3c
Restart Required: Yes
Instructions:
1. Update Linux kernel to version containing the fix commit. 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
linuxRemove or blacklist amdgpu kernel module to prevent vulnerability trigger
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
- Monitor system logs for kernel panic or crash events related to GPU operations
🔍 How to Verify
Check if Vulnerable:
Check kernel version and if amdgpu module is loaded: lsmod | grep amdgpuCheck Version:
uname -rVerify Fix Applied:
Check kernel version contains fix commit: uname -r and verify with distribution's security advisory📡 Detection & Monitoring
Log Indicators:
- Kernel panic messages
- GPU driver error logs
- System crash/reboot events
Network Indicators:
- None - local vulnerability
SIEM Query:
source="kernel" AND ("panic" OR "Oops" OR "amdgpu")