CVE-2024-42263
📋 TL;DR
A memory leak vulnerability in the Linux kernel's V3D graphics driver allows attackers to cause denial of service by exhausting kernel memory resources. This affects systems using the V3D driver for Broadcom VideoCore graphics, typically found on Raspberry Pi devices and other embedded systems. The vulnerability occurs when userspace memory fetching fails during timestamp extension operations.
💻 Affected Systems
- Linux kernel with V3D DRM 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 →⚠️ Risk & Real-World Impact
Worst Case
Kernel memory exhaustion leading to system instability, crashes, or denial of service requiring reboot
Likely Case
Degraded system performance or application crashes when graphics operations fail
If Mitigated
Minimal impact with proper memory limits and monitoring in place
🎯 Exploit Status
Requires ability to trigger the specific graphics driver operation with memory allocation failures
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Kernel commit 753ce4fea62182c77e1691ab4f9022008f25b62e and backports
Vendor Advisory: https://git.kernel.org/stable/c/0e50fcc20bd87584840266e8004f9064a8985b4f
Restart Required: Yes
Instructions:
1. Update Linux kernel to version containing fix commit 2. Reboot system to load new kernel 3. Verify kernel version with 'uname -r'
🔧 Temporary Workarounds
Disable V3D driver module
linuxPrevent loading of vulnerable driver module
echo 'blacklist v3d' >> /etc/modprobe.d/blacklist.conf
rmmod v3d
🧯 If You Can't Patch
- Restrict local user access to systems with vulnerable kernels
- Implement kernel memory usage monitoring and alerts
🔍 How to Verify
Check if Vulnerable:
Check kernel version and if V3D driver is loaded: 'lsmod | grep v3d' and 'uname -r'Check Version:
uname -rVerify Fix Applied:
Verify kernel version includes fix commit and V3D driver loads without errors📡 Detection & Monitoring
Log Indicators:
- Kernel OOM (Out of Memory) messages
- Graphics driver crash logs
- System instability reports
Network Indicators:
- None - local vulnerability only
SIEM Query:
source="kernel" AND ("out of memory" OR "v3d" OR "oom")