Vulnerability Description
pam_usb provides hardware authentication for Linux using removable media. In versions prior to 0.9.2, getenv() environment variables XRDP_SESSION, DISPLAY and TMUX allow environment variable injection into local-check logic. These environment variables influence whether a current session is local or remote, and a PAM module that runs in the context of setuid binaries (sudo, su), getenv() returns attacker-controlled values whenever the process environment has been manipulated by a local user. This issue has been fixed in version 0.9.2.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/mcdope/pam_usb/releases/tag/0.9.2
- https://github.com/mcdope/pam_usb/security/advisories/GHSA-qr83-mf3h-fvqr
FAQ
What is CVE-2026-48980?
CVE-2026-48980 is a vulnerability with a CVSS score of 6.3 (MEDIUM). pam_usb provides hardware authentication for Linux using removable media. In versions prior to 0.9.2, getenv() environment variables XRDP_SESSION, DISPLAY and TMUX allow environment variable injectio...
How severe is CVE-2026-48980?
CVE-2026-48980 has been rated MEDIUM with a CVSS base score of 6.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-48980?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.