CVE-2024-50288
📋 TL;DR
This CVE describes an out-of-bounds write vulnerability in the Linux kernel's VIVID virtual video driver. When using more than 32 video capture buffers, the driver writes beyond allocated memory boundaries, potentially causing system crashes or kernel memory corruption. This affects Linux systems using the VIVID driver, typically in development/testing environments.
💻 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 →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 panic leading to system crash, potential local privilege escalation if combined with other vulnerabilities, or kernel memory corruption enabling arbitrary code execution.
Likely Case
System crash or kernel panic when applications request more than 32 video buffers from the VIVID driver, causing service disruption.
If Mitigated
No impact if VIVID driver is not loaded or if applications use 32 or fewer buffers.
🎯 Exploit Status
Requires local access and ability to interact with VIVID driver. Exploitation would need to trigger buffer allocation beyond 32 buffers.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Patches available in stable kernel branches (commits 96d8569563916fe2f8fe17317e20e43f54f9ba4b and e6bacd8f2178b22859fe6d9f755f19dfcd9d3862)
Vendor Advisory: https://git.kernel.org/stable/c/96d8569563916fe2f8fe17317e20e43f54f9ba4b
Restart Required: Yes
Instructions:
1. Update Linux kernel to patched version. 2. Check with distribution vendor for specific kernel package updates. 3. Reboot system after kernel update.
🔧 Temporary Workarounds
Unload VIVID driver
linuxRemove the VIVID kernel module if not needed
sudo rmmod vivid
Blacklist VIVID driver
linuxPrevent VIVID driver from loading
echo 'blacklist vivid' | sudo tee /etc/modprobe.d/blacklist-vivid.conf
🧯 If You Can't Patch
- Ensure no applications use VIVID driver or request more than 32 video buffers
- Implement strict access controls to prevent unauthorized users from loading kernel modules
🔍 How to Verify
Check if Vulnerable:
Check if VIVID driver is loaded: lsmod | grep vivid. If loaded and kernel version is unpatched, system may be vulnerable.Check Version:
uname -rVerify Fix Applied:
Check kernel version includes patches: uname -r and verify with distribution's security advisories.📡 Detection & Monitoring
Log Indicators:
- Kernel panic logs
- Out-of-bounds memory access errors in kernel logs
- System crash/reboot events
Network Indicators:
- None - local vulnerability only
SIEM Query:
source="kernel" AND ("panic" OR "oops" OR "out of bounds") AND "vivid"