pam_usb: Infinite loop DoS in process-tree walk when parent process exits during authentication_CVE-2026-48986
pam_usb provides hardware authentication for Linux using removable media. In pam_usb 0.9.1 and earlier, usb_get_process_parent_id() can cause an infinite loop DoS because it does not initialize *ppid on failure. In pusb_local_login(), the same variable is reused as input and o...