CVE-2024-42264
📋 TL;DR
This CVE-2024-42264 is an out-of-bounds memory access vulnerability in the Linux kernel's DRM/V3D graphics driver. It allows attackers to read kernel memory beyond allocated boundaries when userspace passes excessive performance monitor IDs. Systems using affected Linux kernel versions with V3D graphics hardware are vulnerable.
💻 Affected Systems
- Linux kernel
📦 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 disclosure leading to information leakage, potential privilege escalation, or system crash/DoS
Likely Case
Information disclosure of kernel memory contents, potentially exposing sensitive data
If Mitigated
Limited impact due to memory access constraints and typical system configurations
🎯 Exploit Status
Requires local access and ability to interact with V3D driver performance query interface
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Kernel versions containing commit f32b5128d2c440368b5bf3a7a356823e235caabb
Vendor Advisory: https://git.kernel.org/stable/c/6ce9efd12ae81cf46bf44eb0348594558dfbb9d2
Restart Required: Yes
Instructions:
1. Update Linux kernel to patched version 2. Reboot system 3. Verify kernel version contains fix commit
🔧 Temporary Workarounds
Disable V3D driver module
linuxPrevent loading of vulnerable v3d kernel module
echo 'blacklist v3d' >> /etc/modprobe.d/blacklist-v3d.conf
rmmod v3d
update-initramfs -u
🧯 If You Can't Patch
- Restrict local user access to systems with V3D hardware
- Implement strict privilege separation and limit users who can access graphics subsystems
🔍 How to Verify
Check if Vulnerable:
Check if kernel version is before fix commit: grep -q 'f32b5128d2c440368b5bf3a7a356823e235caabb' /proc/version_signature || echo 'Potentially vulnerable'Check Version:
uname -rVerify Fix Applied:
Verify kernel contains fix commit: grep 'f32b5128d2c440368b5bf3a7a356823e235caabb' /proc/version_signature📡 Detection & Monitoring
Log Indicators:
- Kernel oops messages
- System crashes related to v3d driver
- Unexpected memory access errors in dmesg
Network Indicators:
- None - local vulnerability only
SIEM Query:
source="kernel" AND ("v3d" OR "out of bounds" OR "oops")