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    CVE-2026-48066

    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.

    Published:May 27, 2026
    Last Modified:May 29, 2026
    EPS:May 27, 2026
    EPSS Score:0.00016
    CVSS Score:5.7

    Affected Products

    Vendor
    Mcdope
    Product
    Pam Usb

    Exploits

    No exploit reference

    Related CVEs

    CVE-2026-48980 (CVSS 6.3) — pam_usb provides hardware authentication for Linux using removable media. In versions prior to 0.9.2, getenv(…
    CVE-2026-48983 (CVSS 5.8) — pam_usb provides hardware authentication for Linux using ordinary removable media. In versions prior to 0.9.2,…
    CVE-2026-48982 (CVSS 5.8) — pam_usb provides hardware authentication for Linux using ordinary removable media. In versions prior to 0.9.2,…
    CVE-2026-48981 (CVSS 6.7) — pam_usb provides hardware authentication for Linux using ordinary removable media. In versions prior to 0.9.2,…
    CVE-2026-48985 (CVSS 5.5) — pam_usb provides hardware authentication for Linux using ordinary removable media. In versions 0.9.1 and below…
    CVE-2026-48986 (CVSS 4.7) — pam_usb provides hardware authentication for Linux using removable media. In pam_usb 0.9.1 and earlier, usb_ge…
    CVE-2026-48984 (CVSS 4.7) — pam_usb provides hardware authentication for Linux using ordinary removable media. In versions 0.9.1 and below…
    CVE-2026-44712 (CVSS 8.2) — pam_usb provides hardware authentication for Linux using ordinary removable media. Prior to 0.8.7, a crafted U…
    CVE-2026-44709 (CVSS 7.8) — pam_usb provides hardware authentication for Linux using ordinary removable media. Prior to 0.8.7, pamusb-pine…
    CVE-2026-44710 (CVSS 4.6) — pam_usb provides hardware authentication for Linux using ordinary removable media. Prior to 0.8.7, src/device.…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High