pam_usb EUVD-2026-32653

Authentication bypass in pam_usb before 0.9.1 allows remote unauthenticated attackers to reach the USB hardware-authenti

Heap buffer overflow in pam_usb prior to 0.9.1 allows a local attacker with high privileges to corrupt heap memory on 32

XXE injection in pam_usb prior to 0.9.2 enables an attacker with write access to the root-owned configuration file to tr

XPath injection in pam_usb prior to 0.9.0 allows unauthenticated remote attackers to manipulate device-verification quer

PATH hijacking in pam_usb helper tools prior to version 0.9.0 allows a local low-privileged attacker who can manipulate

Environment variable injection in pam_usb prior to version 0.9.2 allows a local authenticated user to bypass hardware US

Symlink race condition in pam_usb prior to 0.9.2 allows a local attacker to redirect one-time pad files to an attacker-c

Non-atomic one-time pad file creation in pam_usb prior to 0.9.2 exposes the core replay-prevention mechanism to a local

Concurrent PAM invocations in pam_usb prior to 0.9.1 expose a process-wide static pointer race condition in src/log.c, w

NULL pointer dereference in pam_usb 0.9.1 and below crashes PAM-integrated authentication services (sudo, login) when lo

Infinite loop denial-of-service in pam_usb 0.9.1 and earlier can permanently hang authentication processes such as sudo,

Insecure deallocation in pam_usb 0.9.1 and below leaves sensitive authentication material - including one-time pad (OTP)