CVE-2023-52565
📋 TL;DR
This CVE describes an out-of-bounds read vulnerability in the Linux kernel's UVC video driver. An attacker with local access can trigger this vulnerability by providing an index larger than the mask size, potentially leading to information disclosure or system instability. All Linux systems using the affected UVC driver 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 →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 privilege escalation or system crash, potentially enabling full system compromise.
Likely Case
Information disclosure of kernel memory, system instability, or denial of service through kernel panic.
If Mitigated
Limited impact if proper access controls restrict local user access and kernel hardening is enabled.
🎯 Exploit Status
Requires local access and ability to interact with UVC video devices. No public exploit code identified in references.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Patches available in stable kernel branches (commits: 09635bf4cdd4adf2160198a6041bcc7ca46c0558, 41ebaa5e0eebea4c3bac96b72f9f8ae0d77c0bdb, 8bcf70d787f7d53a3b85ad394f926cfef3eed023)
Vendor Advisory: https://git.kernel.org/stable/c/09635bf4cdd4adf2160198a6041bcc7ca46c0558
Restart Required: Yes
Instructions:
1. Update Linux kernel to patched version from your distribution's repositories. 2. Reboot system to load new kernel. 3. Verify uvcvideo module is updated.
🔧 Temporary Workarounds
Disable UVC video module
linuxPrevent loading of vulnerable uvcvideo kernel module
echo 'blacklist uvcvideo' >> /etc/modprobe.d/blacklist-uvcvideo.conf
rmmod uvcvideo
Restrict device access
linuxLimit access to video devices to trusted users only
chmod 600 /dev/video*
setfacl -m u:trusteduser:rw /dev/video*
🧯 If You Can't Patch
- Restrict local user access to systems with UVC devices
- Implement strict access controls and monitoring for video device usage
🔍 How to Verify
Check if Vulnerable:
Check if uvcvideo module is loaded: lsmod | grep uvcvideo. If loaded and kernel version is unpatched, system is vulnerable.Check Version:
uname -rVerify Fix Applied:
Check kernel version is patched: uname -r should match or exceed patched version from your distribution. Verify uvcvideo module version matches patched kernel.📡 Detection & Monitoring
Log Indicators:
- Kernel oops or panic messages in /var/log/kern.log or dmesg
- Unusual access patterns to /dev/video* devices
Network Indicators:
- Not applicable - local vulnerability
SIEM Query:
source="kern.log" AND ("Oops" OR "panic" OR "uvcvideo")🔗 References
- https://git.kernel.org/stable/c/09635bf4cdd4adf2160198a6041bcc7ca46c0558
- https://git.kernel.org/stable/c/41ebaa5e0eebea4c3bac96b72f9f8ae0d77c0bdb
- https://git.kernel.org/stable/c/8bcf70d787f7d53a3b85ad394f926cfef3eed023
- https://git.kernel.org/stable/c/09635bf4cdd4adf2160198a6041bcc7ca46c0558
- https://git.kernel.org/stable/c/41ebaa5e0eebea4c3bac96b72f9f8ae0d77c0bdb
- https://git.kernel.org/stable/c/8bcf70d787f7d53a3b85ad394f926cfef3eed023
