Security Advisory

CVE-2026-48066

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-05-27 19:57:42

Last updated 2026-05-28 12:54:38

Assigner GitHub_M

CVSS score 5.7

State PUBLISHED

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.

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