VULNERABILITY INTELLIGENCE

CVE-2026-48066

CVSS score5.7 MEDIUM
EPSS probability0.12%
CISA KEVNot currently listed
Published2026-05-27
Last modified2026-10-26
CVSS vectorCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H

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.

Weakness classification

  • security-advisories@github.com: CWE-362

Primary references