CVE-2024-46729
📋 TL;DR
This CVE-2024-46729 is a buffer overrun vulnerability in the AMD display driver component of the Linux kernel. It allows attackers to potentially execute arbitrary code or cause denial of service by exploiting incorrect size calculations in memory operations. Systems running affected Linux kernel versions with AMD graphics hardware are vulnerable.
💻 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-level arbitrary code execution leading to full system compromise, privilege escalation, or persistent rootkit installation.
Likely Case
Kernel panic or system crash causing denial of service, potentially requiring physical access to restart.
If Mitigated
System remains stable with no impact if patch is applied or vulnerable code path isn't triggered.
🎯 Exploit Status
Requires local access to trigger the vulnerable code path. No public exploits known at this time.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Kernel versions containing commit 3941a3aa4b653b69876d894d08f3fff1cc965267 or 712be65b3b372a82bff0865b9c090147764bf1c4
Vendor Advisory: https://git.kernel.org/stable/c/3941a3aa4b653b69876d894d08f3fff1cc965267
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 package. 3. Reboot system to load 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
reboot
🧯 If You Can't Patch
- Restrict local user access to systems with AMD graphics hardware
- Implement strict privilege separation and limit users who can trigger display operations
🔍 How to Verify
Check if Vulnerable:
Check kernel version and if AMD display driver is loaded: lsmod | grep amdgpu && uname -rCheck Version:
uname -rVerify Fix Applied:
Verify kernel version is updated and contains the fix commit: git log --oneline | grep -E '3941a3aa4b653b69876d894d08f3fff1cc965267|712be65b3b372a82bff0865b9c090147764bf1c4'📡 Detection & Monitoring
Log Indicators:
- Kernel oops messages
- System crash/panic logs in /var/log/kern.log or journalctl
- AMD driver error messages
Network Indicators:
- None - local vulnerability only
SIEM Query:
source="kernel" AND ("Oops" OR "panic" OR "BUG") AND "amdgpu" OR "drm/amd"