6.3 CVE-2026-48980

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.
https://nvd.nist.gov/vuln/detail/CVE-2026-48980

Categories

CWE-454 : External Initialization of Trusted Variables or Data Stores
A product system should be reluctant to trust variables that have been initialized outside of its trust boundary, especially if they are initialized by users. The variables may have been initialized incorrectly. If an attacker can initialize the variable, then they can influence what the vulnerable system will do.

References

 

AFFECTED (from MITRE)

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Vendor	Product	Versions
mcdope	pam_usb	< 0.9.2 [affected]
© 2022 The MITRE Corporation. This work is reproduced and distributed with the permission of The MITRE Corporation.

CPE

cpe	start	end

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REMEDIATION

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EXPLOITS

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Exploit-db.com

id	description	date
No known exploits

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POC Github

Url
No known exploits

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Other Nist (github, ...)

Url
No known exploits

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CAPEC

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Common Attack Pattern Enumerations and Classifications

id	description	severity
No entry

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