CVE-2026-48980 pam_usb: getenv() used in PAM context allows environment variable injection into local-check logic

pamusb provides hardware authentication for Linux using removable media. In versions prior to 0.9.2, getenv environment variables XRDPSESSION, DISPLAY and TMUX allow environment variable injection into local-check logic. These environment variables influence whether a current session is local or...

CVE-2026-48980

The PAM module pam_usb is affected by a local-access vulnerability in earlier releases (pre-0.9.2) where getenv() in a PAM context returns attacker-controlled values for XRDP_SESSION, DISPLAY, and TMUX when the environment is manipulated by a local user. These values influence local-vs-remote ses...