CVE-2026-48064

Katalog CVE

CVSS 8.1 · High EPSS 0,54%

Kerentanan Incorrect Authorization. Skor CVSS 3.1 8.1 (High) menurut github.com.

Deskripsi (NVD)

pam_usb provides hardware authentication for Linux using ordinary removable media. Prior to 0.9.1, when a PAM service is configured with deny_remote=false in pam_usb (commonly done for display managers such as gdm-password or lightdm to bypass process/TTY heuristics for local sessions), the PAM_RHOST check in pusb_do_auth() is also skipped. PAM_RHOST is set by remote daemons (sshd, XDMCP servers) to identify the remote client address. Because the check is gated inside if (opts.deny_remote), a genuine remote XDMCP connection reaches the USB device authentication step instead of being rejected. This vulnerability is fixed in 0.9.1.

Rincian

Terbit di NVD

27 Mei 2026

Terakhir diubah

17 Juni 2026

Status NVD

Deferred

CVSS 3.1

8.1 (High), sumber github.com
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-863: Incorrect Authorization

EPSS (30 hari)

0,54% peluang dieksploitasi; lebih tinggi dari 44,1% CVE lain

Produk dan versi terdampak

NVD belum mencantumkan data produk (CPE) untuk CVE ini. Produk yang terdampak biasanya disebut di deskripsi dan di advisory vendor pada daftar referensi.

Referensi dan perbaikan

• https://github.com/mcdope/pam_usb/issues/348
• https://github.com/mcdope/pam_usb/security/advisories/GHSA-w38v-cw9r-x9p6