PT-2026-44090 · Pam Usb · Pam Usb

Mcdope · Published 2026-05-27 · Updated 2026-05-27 · CVE-2026-48066

Positive Technologies (AI Summary)

CVSS v3.1

5.7

Medium

Base vector

AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H

Name of the Vulnerable Software and Affected Versions pam usb versions prior to 0.9.1

Description In src/log.c, a process-wide static pointer is written with the address of a stack-local variable during every PAM invocation. This behavior violates the PAM re-entrancy requirement—the ability of a function to be interrupted and safely called again before its previous invocation has finished—resulting in a data race when the PAM stack is invoked concurrently from multiple threads.

Recommendations Update to version 0.9.1.

Fix

Race Condition

NULL Pointer Dereference

Weakness Enumeration

CWE-362

CWE-476

Related Identifiers

CVE-2026-48066

Affected Products

Pam Usb

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2026-48066 · Security Note
• https://github.com/mcdope/pam_usb/issues/350 · Note
• https://github.com/mcdope/pam_usb/issues/55 · Note
• https://github.com/mcdope/pam_usb/security/advisories/GHSA-qg76-57wq-mpv6 · Note
• https://t.me/CVEtracker/55165 · Telegram Post