CVE-2026-48066
MEDIUM
NVD
CVSS Score
5.7
Severity
MEDIUM
Published
May 27, 2026
Vendor
unknown
Description
pam_usb provides hardware authentication for Linux using ordinary removable media. Prior to 0.9.1, src/log.c contains a process-wide static pointer that is written on every PAM invocation with the address of a stack-local variable. This violates the PAM re-entrancy requirement and creates a data race when the PAM stack is invoked concurrently from multiple threads. This vulnerability is fixed in 0.9.1.