CVE-2023-53454
📋 TL;DR
This is a use-after-free vulnerability in the Linux kernel's HID multitouch driver. When exploited, it allows attackers to potentially execute arbitrary code or cause system crashes by triggering a uevent after the input device name has been freed. This affects Linux systems with HID multitouch 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 →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
Local privilege escalation to kernel-level code execution, potentially leading to full system compromise.
Likely Case
System crash or denial of service through kernel panic.
If Mitigated
No impact if patched or without HID multitouch devices.
🎯 Exploit Status
Requires local access and knowledge of kernel exploitation techniques.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Patches available in stable kernel trees (commits referenced in CVE)
Vendor Advisory: https://git.kernel.org/stable/c/15ec7cb55e7d88755aa01d44a7a1015a42bfce86
Restart Required: Yes
Instructions:
1. Update Linux kernel to patched version from your distribution's repositories. 2. Reboot system to load new kernel.
🔧 Temporary Workarounds
Disable HID multitouch support
linuxRemove or blacklist HID multitouch kernel module
echo 'blacklist hid-multitouch' >> /etc/modprobe.d/blacklist.conf
rmmod hid-multitouch
🧯 If You Can't Patch
- Restrict physical and local access to systems
- Implement strict user privilege separation and monitoring
🔍 How to Verify
Check if Vulnerable:
Check kernel version and if hid-multitouch module is loaded: lsmod | grep hid_multitouchCheck Version:
uname -rVerify Fix Applied:
Verify kernel version is updated and check dmesg for no related errors after patch📡 Detection & Monitoring
Log Indicators:
- Kernel panic logs
- Use-after-free warnings in dmesg
- HID device errors
Network Indicators:
- None - local exploit only
SIEM Query:
Search for kernel panic events or HID driver errors in system logs🔗 References
- https://git.kernel.org/stable/c/15ec7cb55e7d88755aa01d44a7a1015a42bfce86
- https://git.kernel.org/stable/c/1d7833db9fd118415dace2ca157bfa603dec9c8c
- https://git.kernel.org/stable/c/2763732ec1e68910719c75b6b896e11b6d3d622b
- https://git.kernel.org/stable/c/39c70c19456e50dcb3abfe53539220dff0490f1d
- https://git.kernel.org/stable/c/4794394635293a3e74591351fff469cea7ad15a2
- https://git.kernel.org/stable/c/ac0d389402a6ff9ad92cea02c2d8c711483b91ab
- https://git.kernel.org/stable/c/b70ac7849248ec8128fa12f86e3655ba38838f29
- https://git.kernel.org/stable/c/dde88ab4e45beb60b217026207aa9c14c88d71ab
- https://git.kernel.org/stable/c/df7ca43fe090e1a56c216c8ebc106ef5fd49afc6
