CVE-2024-56697
📋 TL;DR
This CVE addresses a NULL pointer dereference vulnerability in the AMD GPU driver within the Linux kernel. An attacker could trigger a kernel panic or system crash by exploiting memory allocation failures. This affects Linux systems with AMD GPUs using the affected driver.
💻 Affected Systems
- Linux kernel with AMD GPU driver (amdgpu)
📦 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 denial of service (system crash) with potential data loss or corruption.
Likely Case
System crash or instability requiring reboot, causing temporary service disruption.
If Mitigated
Minimal impact if proper kernel hardening and privilege separation are in place.
🎯 Exploit Status
Requires local access and ability to trigger specific GPU operations. No public exploits known.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Linux kernel commits: a1144da794adedb9447437c57d69add56494309d, d14bea4e094871226ea69772d69dab8b7b5f4915, e8f1dbaa0437eba4e8c1d6a6d81eca2e2ce3d197
Vendor Advisory: https://git.kernel.org/stable/c/a1144da794adedb9447437c57d69add56494309d
Restart Required: Yes
Instructions:
1. Update Linux kernel to version containing the fix commits. 2. Reboot system to load new kernel. 3. Verify amdgpu driver loads without errors.
🔧 Temporary Workarounds
Disable amdgpu driver
linuxPrevent loading of vulnerable AMD GPU driver module
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
- Implement kernel hardening features like SELinux/AppArmor to limit driver operations
🔍 How to Verify
Check if Vulnerable:
Check if amdgpu module is loaded: lsmod | grep amdgpu AND check kernel version against patched versionsCheck Version:
uname -rVerify Fix Applied:
Verify kernel version includes fix commits and amdgpu module loads without crashes during GPU operations📡 Detection & Monitoring
Log Indicators:
- Kernel panic messages
- amdgpu driver crash logs in dmesg
- System crash/reboot events
Network Indicators:
- None - local vulnerability only
SIEM Query:
source="kernel" AND ("panic" OR "Oops" OR "amdgpu")