CVE-2024-26797
📋 TL;DR
This CVE describes a buffer overflow vulnerability in the AMD display driver within the Linux kernel. An attacker could exploit this to cause kernel crashes, privilege escalation, or arbitrary code execution. Systems running affected Linux kernel versions with AMD graphics hardware are vulnerable.
💻 Affected Systems
- Linux kernel with AMD GPU/display driver
📦 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 →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 →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 →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, privilege escalation to root, or arbitrary code execution in kernel context
Likely Case
System instability, crashes, or denial of service affecting display functionality
If Mitigated
Minor performance impact or display glitches when the bounds check triggers
🎯 Exploit Status
Exploitation requires triggering the vulnerable display driver code path, which typically requires local access and specific display operations
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Linux kernel with commits 0f8ca019544a252d1afb468ce840c6dcbac73af4 and 50a6302cf881f67f1410461a68fe9eabd00ff31d
Vendor Advisory: https://git.kernel.org/stable/c/0f8ca019544a252d1afb468ce840c6dcbac73af4
Restart Required: Yes
Instructions:
1. Update Linux kernel to version containing the fix commits. 2. For distributions: Use package manager (apt/yum/dnf) to update kernel. 3. Reboot system to load new kernel.
🔧 Temporary Workarounds
Disable AMD display 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 access to systems with AMD graphics hardware
- Implement strict privilege separation and limit user access to display configuration operations
🔍 How to Verify
Check if Vulnerable:
Check kernel version and if AMD GPU is present: lspci | grep -i amd && uname -rCheck Version:
uname -rVerify Fix Applied:
Verify kernel version includes fix commits or is newer than vulnerable versions📡 Detection & Monitoring
Log Indicators:
- Kernel panic messages
- AMD GPU driver crash logs
- System crash/reboot events
Network Indicators:
- None - local vulnerability
SIEM Query:
EventID=41 OR (Source="kernel" AND Message="panic" OR "Oops")