CVE-2024-46813
📋 TL;DR
This CVE-2024-46813 is an out-of-bounds array access vulnerability in the AMD display driver component of the Linux kernel. An attacker could exploit this to cause kernel memory corruption, potentially leading to system crashes or privilege escalation. This affects Linux systems with AMD graphics hardware using the affected kernel versions.
💻 Affected Systems
- Linux kernel with AMD display driver (drm/amd/display)
📦 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 →⚠️ Risk & Real-World Impact
Worst Case
Kernel memory corruption leading to privilege escalation, system crash, or arbitrary code execution in kernel context.
Likely Case
System instability, kernel panic, or denial of service through system crashes.
If Mitigated
Limited impact if system has proper kernel hardening and exploit mitigations enabled.
🎯 Exploit Status
Exploitation requires local access and ability to trigger specific display operations. The vulnerability was discovered through static analysis (Coverity).
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Kernel versions containing commits 032c5407a608ac3b2a98bf4fbda27d12c20c5887, 8aa2864044b9d13e95fe224f32e808afbf79ecdf, or ac04759b4a002969cf0f1384f1b8bb2001cfa782
Vendor Advisory: https://git.kernel.org/stable/c/032c5407a608ac3b2a98bf4fbda27d12c20c5887
Restart Required: Yes
Instructions:
1. Update to a patched kernel version from your distribution vendor. 2. Reboot the system to load the new kernel.
🔧 Temporary Workarounds
Disable AMD display driver
linuxPrevent loading of the vulnerable AMD display driver module
echo 'blacklist amdgpu' >> /etc/modprobe.d/blacklist.conf
update-initramfs -u
🧯 If You Can't Patch
- Restrict local access to systems with AMD graphics hardware
- Implement strict privilege separation and limit user access to display management functions
🔍 How to Verify
Check if Vulnerable:
Check kernel version and verify if it contains the vulnerable AMD display driver code before the fix commitsCheck Version:
uname -rVerify Fix Applied:
Verify kernel version includes the fix commits or check with 'modinfo amdgpu' for updated module version📡 Detection & Monitoring
Log Indicators:
- Kernel panic logs
- AMDGPU driver crash messages in dmesg
- System crash/reboot events
Network Indicators:
- None - local vulnerability
SIEM Query:
Search for kernel panic events or AMDGPU driver crashes in system logs