CVE-2024-49919
📋 TL;DR
This CVE addresses a null pointer dereference vulnerability in the AMD display driver within the Linux kernel. If exploited, it could cause a kernel panic or system crash, affecting systems running vulnerable Linux kernel versions with AMD graphics hardware. The vulnerability requires local access to trigger.
💻 Affected Systems
- Linux kernel with AMD GPU 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 →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, potentially causing data loss or system instability.
Likely Case
System crash or kernel panic requiring reboot, resulting in temporary denial of service.
If Mitigated
No impact if the patch is applied or if the vulnerable code path isn't triggered.
🎯 Exploit Status
Requires local access and specific conditions to trigger the null pointer dereference. No public exploits known at this time.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Linux kernel versions containing commits: 16ce8fd94da8599bb6f0496895d392a69aead1c0, 390d757621f5f35d11a63ed7d9d3262ead240064, 8a1b1655a490a492a5a6987254c935ecce4eb9de, f22f4754aaa47d8c59f166ba3042182859e5dff7
Vendor Advisory: https://git.kernel.org/stable/c/16ce8fd94da8599bb6f0496895d392a69aead1c0
Restart Required: Yes
Instructions:
1. Update Linux kernel to version containing the fix commits. 2. Reboot system to load patched kernel. 3. Verify kernel version after reboot.
🔧 Temporary Workarounds
Disable AMD GPU driver module
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 vulnerable kernels
- Monitor system logs for kernel panic or crash events related to display driver
🔍 How to Verify
Check if Vulnerable:
Check if kernel version is vulnerable by examining kernel source or distribution security advisoriesCheck Version:
uname -rVerify Fix Applied:
Verify kernel version contains one of the fix commits: grep -r '16ce8fd94da8599bb6f0496895d392a69aead1c0\|390d757621f5f35d11a63ed7d9d3262ead240064\|8a1b1655a490a492a5a6987254c935ecce4eb9de\|f22f4754aaa47d8c59f166ba3042182859e5dff7' /usr/src/linux-headers-*📡 Detection & Monitoring
Log Indicators:
- Kernel panic messages
- System crash/reboot events
- AMD GPU driver error messages in dmesg
Network Indicators:
- None - local vulnerability only
SIEM Query:
source="kernel" AND ("panic" OR "Oops" OR "BUG") AND "amdgpu"