CVE-2024-53098
📋 TL;DR
This vulnerability in the Linux kernel's Xe graphics driver allows attackers with local access to pass invalid memory addresses to the ufence subsystem, bypassing access_ok() checks. It affects systems running vulnerable Linux kernel versions with Xe driver enabled. The flaw could lead to kernel crashes or potential privilege escalation.
💻 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 →⚠️ Risk & Real-World Impact
Worst Case
Local privilege escalation to root via kernel memory corruption, potentially leading to full system compromise.
Likely Case
Kernel panic/denial-of-service causing system crashes or instability.
If Mitigated
Limited to denial-of-service if proper kernel hardening and privilege separation are in place.
🎯 Exploit Status
Requires local access and ability to interact with Xe driver ufence subsystem. Exploit would need to craft specific invalid memory addresses.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Kernel versions containing commit 9408c4508483ffc60811e910a93d6425b8e63928 or later
Vendor Advisory: https://git.kernel.org/stable/c/5d623ffbae96b23f1fc43a3d5a267aabdb07583d
Restart Required: Yes
Instructions:
1. Update Linux kernel to version containing the fix commit. 2. For distributions: Use package manager (apt/yum/dnf) to update kernel package. 3. Reboot system to load patched kernel.
🔧 Temporary Workarounds
Disable Xe graphics driver
linuxPrevent loading of vulnerable Xe driver module
echo 'blacklist xe' >> /etc/modprobe.d/blacklist-xe.conf
rmmod xe
update-initramfs -u
🧯 If You Can't Patch
- Restrict local user access to systems with Xe driver enabled
- Implement strict privilege separation and limit users who can access graphics subsystems
🔍 How to Verify
Check if Vulnerable:
Check if Xe driver is loaded: lsmod | grep xe. If loaded, check kernel version against patched versions.Check Version:
uname -rVerify Fix Applied:
Verify kernel version includes fix commit: grep -q '9408c4508483ffc60811e910a93d6425b8e63928' /proc/version_signature || uname -r📡 Detection & Monitoring
Log Indicators:
- Kernel oops/panic messages related to Xe driver
- Invalid memory access errors in dmesg
- System crashes with Xe module stack traces
Network Indicators:
- None - local exploit only
SIEM Query:
source="kernel" AND ("Xe" OR "ufence") AND ("panic" OR "oops" OR "BUG")