CVE-2023-54207
📋 TL;DR
This CVE describes a use-after-free vulnerability in the Linux kernel's HID uclogic driver. When the input device is unregistered, it can trigger a uevent that references freed memory for the device name, potentially causing kernel crashes or instability. This affects Linux systems using the uclogic HID driver, typically for graphics tablets or similar input devices.
💻 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 →⚠️ Risk & Real-World Impact
Worst Case
Kernel panic leading to system crash and denial of service, potentially allowing local privilege escalation if combined with other vulnerabilities.
Likely Case
System instability or crash when unplugging or reconfiguring affected HID devices, requiring system reboot.
If Mitigated
Minor system instability that self-recovers or requires manual intervention.
🎯 Exploit Status
Exploitation requires local access and ability to trigger device unregistration events. No public exploits have been reported.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Fixed in kernel commits: 4c2707dfee5847dc0b5ecfbe512c29c93832fdc4, 51f49e3927ad545cec0c0afb86856ccacd9f085d, 58f0d1c0e494a88f301bf455da7df4366f179bbb, dd613a4e45f8d35f49a63a2064e5308fa5619e29, f283805d984343b2f216e2f4c6c7af265b9542ae
Vendor Advisory: https://git.kernel.org/stable/c/4c2707dfee5847dc0b5ecfbe512c29c93832fdc4
Restart Required: Yes
Instructions:
1. Update Linux kernel to version containing the fix commits. 2. Check distribution-specific security advisories for backported patches. 3. Reboot system after kernel update.
🔧 Temporary Workarounds
Disable uclogic HID driver
linuxBlacklist or disable the uclogic HID driver module to prevent loading
echo 'blacklist hid-uclogic' >> /etc/modprobe.d/blacklist.conf
rmmod hid-uclogic
Avoid affected hardware
linuxDisconnect or avoid using graphics tablets and devices that use the uclogic HID driver
🧯 If You Can't Patch
- Restrict physical access to systems to prevent local users from triggering device events
- Implement strict device connection policies and monitor for unusual HID device activity
🔍 How to Verify
Check if Vulnerable:
Check if uclogic HID driver is loaded: lsmod | grep uclogic. Check kernel version against patched versions.Check Version:
uname -rVerify Fix Applied:
Verify kernel version includes fix commits or check distribution security advisory. Confirm uclogic driver loads without issues during device connect/disconnect cycles.📡 Detection & Monitoring
Log Indicators:
- Kernel panic messages in /var/log/kern.log or dmesg
- UEVENT errors related to HID devices
- System crash reports
Network Indicators:
- None - this is a local kernel vulnerability
SIEM Query:
source="kernel" AND ("panic" OR "Oops" OR "use-after-free") AND "HID"🔗 References
- https://git.kernel.org/stable/c/4c2707dfee5847dc0b5ecfbe512c29c93832fdc4
- https://git.kernel.org/stable/c/51f49e3927ad545cec0c0afb86856ccacd9f085d
- https://git.kernel.org/stable/c/58f0d1c0e494a88f301bf455da7df4366f179bbb
- https://git.kernel.org/stable/c/dd613a4e45f8d35f49a63a2064e5308fa5619e29
- https://git.kernel.org/stable/c/f283805d984343b2f216e2f4c6c7af265b9542ae
- https://git.kernel.org/stable/c/f78bb490b16ecb506d4904be4b00bf9aad6588f9
