CVE-2026-43246: Linux内核tw9906驱动内存泄漏漏洞

/* * PoC Concept for CVE-2026-43246 * Triggering memory leak in tw9906_probe error path. * This requires a system with the vulnerable driver loaded. */ #include <stdio.h> #include <stdlib.h> #include <fcntl.h> #include <unistd.h> #include <sys/ioctl.h> #define DEVICE_PATH "/dev/video0" // Hypothetical device node int main() { int fd; printf("[+] Attempting to trigger memory leak in tw9906_probe\n"); // In a real exploitation scenario, one would interact with the i2c device // or module loading mechanism to force the probe function to hit the error path. // Since this is a kernel driver issue, a specific userspace tool or // hardware emulation is often needed to reach the vulnerable code. fd = open(DEVICE_PATH, O_RDWR); if (fd < 0) { perror("[-] Failed to open device"); return 1; } // Simulate operations that might trigger the driver re-initialization or error // This is a placeholder for the actual trigger logic. printf("[+] Device opened. Interacting with driver to trigger error path...\n"); close(fd); printf("[+] Done. Memory may have been leaked.\n"); return 0; }