Medium severity5.7NVD Advisory· Published May 27, 2026· Updated Jun 17, 2026
CVE-2026-48066
CVE-2026-48066
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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Affected products
2Patches
Vulnerability mechanics
References
3News mentions
1- Mcdope Pam Usb: 15 CVEs Disclosed in a Single Day — RCE, Auth Bypass, and Race ConditionsVypr Intelligence · May 27, 2026