CVE-2024-46683
📋 TL;DR
This CVE describes a use-after-free vulnerability in the Linux kernel's Xe graphics driver. It allows attackers to potentially crash the system or execute arbitrary code with kernel privileges by exploiting a race condition in fence signaling. Systems running affected Linux kernel versions with Xe graphics driver enabled are vulnerable.
💻 Affected Systems
- Linux kernel with Xe graphics 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 →⚠️ Risk & Real-World Impact
Worst Case
Kernel privilege escalation leading to full system compromise, arbitrary code execution at kernel level, and persistent root access.
Likely Case
Kernel panic or system crash causing denial of service, potentially leading to data corruption or system instability.
If Mitigated
Limited impact if proper kernel hardening, SELinux/AppArmor, and privilege separation are implemented, though crashes may still occur.
🎯 Exploit Status
Exploitation requires local access and ability to trigger the race condition. No public exploits are known at this time.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Kernel versions containing commit 7116c35aacedc38be6d15bd21b2fc936eed0008b
Vendor Advisory: https://git.kernel.org/stable/c/10081b0b0ed201f53e24bd92deb2e0f3c3e713d4
Restart Required: Yes
Instructions:
1. Update Linux kernel to version containing the fix commit. 2. For distributions: Use package manager to update kernel package. 3. Reboot system to load new kernel. 4. Verify kernel version after reboot.
🔧 Temporary Workarounds
Disable Xe graphics driver
linuxPrevent loading of the vulnerable Xe driver module
echo 'blacklist xe' >> /etc/modprobe.d/blacklist-xe.conf
update-initramfs -u
reboot
🧯 If You Can't Patch
- Implement strict access controls to limit local user privileges
- Monitor system logs for kernel panics or unusual driver behavior
🔍 How to Verify
Check if Vulnerable:
Check if Xe driver is loaded: lsmod | grep xe. Check kernel version against affected versions.Check Version:
uname -rVerify Fix Applied:
Verify kernel version includes fix commit: git log --oneline | grep 7116c35aacedc38be6d15bd21b2fc936eed0008b📡 Detection & Monitoring
Log Indicators:
- Kernel oops messages
- System crashes/panics
- Xe driver error messages in dmesg
Network Indicators:
- None - local vulnerability only
SIEM Query:
source="kernel" AND ("oops" OR "panic" OR "xe" AND "error")