CVE-2021-46906

Katalog CVE

CVSS 5.5 · Medium EPSS 0,25%

Kerentanan Exposure of Resource to Wrong Sphere pada linux kernel. Skor CVSS 3.1 5.5 (Medium) menurut NVD.

Deskripsi (NVD)

In the Linux kernel, the following vulnerability has been resolved: HID: usbhid: fix info leak in hid_submit_ctrl In hid_submit_ctrl(), the way of calculating the report length doesn't take into account that report->size can be zero. When running the syzkaller reproducer, a report of size 0 causes hid_submit_ctrl) to calculate transfer_buffer_length as 16384. When this urb is passed to the usb core layer, KMSAN reports an info leak of 16384 bytes. To fix this, first modify hid_report_len() to account for the zero report size case by using DIV_ROUND_UP for the division. Then, call it from hid_submit_ctrl().

Rincian

Terbit di NVD

26 Februari 2024

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

5.5 (Medium), sumber NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-668: Exposure of Resource to Wrong Sphere

EPSS (30 hari)

0,25% peluang dieksploitasi; lebih tinggi dari 14,5% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://git.kernel.org/stable/c/0e280502be1b003c3483ae03fc60dea554fcfa82 patch
• https://git.kernel.org/stable/c/21883bff0fd854e07429a773ff18f1e9658f50e8 patch
• https://git.kernel.org/stable/c/41b1e71a2c57366b08dcca1a28b0d45ca69429ce patch
• https://git.kernel.org/stable/c/6be388f4a35d2ce5ef7dbf635a8964a5da7f799f patch
• https://git.kernel.org/stable/c/7f5a4b24cdbd7372770a02f23e347d7d9a9ac8f1 patch
• https://git.kernel.org/stable/c/8c064eece9a51856f3f275104520c7e3017fc5c0 patch
• https://git.kernel.org/stable/c/b1e3596416d74ce95cc0b7b38472329a3818f8a9 patch
• https://git.kernel.org/stable/c/c5d3c142f2d57d40c55e65d5622d319125a45366 patch