CVEvulnerability

CVE-2026-48792

4.4 MEDIUM Published 2026-05-27 Modified 2026-10-26 Official page ↗
Status
Deferred
Published
2026-05-27
Last modified
2026-10-26
Assigner
[email protected]
CVSS 3.1 ([email protected])
4.4 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Weaknesses
CWE-390, CWE-693

Description

pam_usb provides hardware authentication for Linux using ordinary removable media. Prior to 0.9.1, src/evdev.c silently ignores EACCES errors when opening /dev/input/event* nodes, causing pusb_has_virtual_input_device() to return 0 (no virtual devices found) even when every open() call failed due to insufficient permissions. The caller in src/local.c cannot distinguish a clean absence of virtual devices from a permission-denied scan, and acts on the false negative by continuing authentication without denying. This vulnerability is fixed in 0.9.1.

Related

Weakness · CWE (2)

  • CWE-390 Detection of Error Condition Without Action weakness
  • CWE-693 Protection Mechanism Failure weakness

References