CVE-2024-27029
📋 TL;DR
This CVE describes an out-of-bounds memory access vulnerability in the AMD GPU driver (drm/amdgpu) in the Linux kernel. An attacker could potentially read or write kernel memory beyond allocated bounds, leading to system instability or privilege escalation. Systems using AMD GPUs with affected Linux kernel versions are vulnerable.
💻 Affected Systems
- Linux kernel with AMD GPU driver (drm/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 memory corruption leading to system crash, privilege escalation to root, or arbitrary code execution in kernel context.
Likely Case
System instability, kernel panic, or denial of service through memory corruption.
If Mitigated
Limited impact if proper kernel hardening and memory protection mechanisms are enabled.
🎯 Exploit Status
Requires local access to trigger the out-of-bounds access. Exploitation would require understanding of kernel memory layout and bypassing mitigations.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Kernel versions containing commits 1f24b3040f2b6ffcb97151fabb3070328254d923 and 6540ff6482c1a5a6890ae44b23d0852ba1986d9e
Vendor Advisory: https://git.kernel.org/stable/c/1f24b3040f2b6ffcb97151fabb3070328254d923
Restart Required: Yes
Instructions:
1. Update Linux kernel to patched version from your distribution's repositories. 2. Reboot system to load new kernel. 3. Verify kernel version after reboot.
🔧 Temporary Workarounds
Disable AMD GPU driver
linuxTemporarily disable the amdgpu kernel module to prevent exploitation
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
- Enable kernel hardening features like KASLR, stack canaries, and SMEP/SMAP
🔍 How to Verify
Check if Vulnerable:
Check if system has AMD GPU and amdgpu driver loaded: lsmod | grep amdgpu && uname -rCheck Version:
uname -rVerify Fix Applied:
Verify kernel version includes the fix commits: git log --oneline | grep -E '1f24b3040f2b6ffcb97151fabb3070328254d923|6540ff6482c1a5a6890ae44b23d0852ba1986d9e'📡 Detection & Monitoring
Log Indicators:
- Kernel oops messages
- System crashes/panics
- dmesg errors related to amdgpu or mmhub
Network Indicators:
- None - local vulnerability
SIEM Query:
source="kernel" AND ("amdgpu" OR "mmhub") AND ("Oops" OR "panic" OR "BUG")🔗 References
- https://git.kernel.org/stable/c/1f24b3040f2b6ffcb97151fabb3070328254d923
- https://git.kernel.org/stable/c/6540ff6482c1a5a6890ae44b23d0852ba1986d9e
- https://git.kernel.org/stable/c/e1e076bda4fd6378ae650f2c6ef1a4ff93c5aea5
- https://git.kernel.org/stable/c/1f24b3040f2b6ffcb97151fabb3070328254d923
- https://git.kernel.org/stable/c/6540ff6482c1a5a6890ae44b23d0852ba1986d9e
- https://git.kernel.org/stable/c/e1e076bda4fd6378ae650f2c6ef1a4ff93c5aea5
