CVE-2025-71111

Katalog CVE

CVSS 4.7 · Medium EPSS 0,11%

Kerentanan Time-of-check Time-of-use (TOCTOU) Race Condition pada linux kernel. Skor CVSS 3.1 4.7 (Medium) menurut NVD.

Deskripsi (NVD)

In the Linux kernel, the following vulnerability has been resolved: hwmon: (w83791d) Convert macros to functions to avoid TOCTOU The macro FAN_FROM_REG evaluates its arguments multiple times. When used in lockless contexts involving shared driver data, this leads to Time-of-Check to Time-of-Use (TOCTOU) race conditions, potentially causing divide-by-zero errors. Convert the macro to a static function. This guarantees that arguments are evaluated only once (pass-by-value), preventing the race conditions. Additionally, in store_fan_div, move the calculation of the minimum limit inside the update lock. This ensures that the read-modify-write sequence operates on consistent data. Adhere to the principle of minimal changes by only converting macros that evaluate arguments multiple times and are used in lockless contexts.

Rincian

Terbit di NVD

14 Januari 2026

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition

EPSS (30 hari)

0,11% peluang dieksploitasi; lebih tinggi dari 1,0% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://git.kernel.org/stable/c/3dceb68f6ad33156032ef4da21a93d84059cca6d patch
• https://git.kernel.org/stable/c/670d7ef945d3a84683594429aea6ab2cdfa5ceb4 patch
• https://git.kernel.org/stable/c/a9fb6e8835a22f5796c1182ed612daed3fd273af patch
• https://git.kernel.org/stable/c/bf5b03227f2e6d4360004886d268f9df8993ef8f patch
• https://git.kernel.org/stable/c/c8cf0c2bdcccc6634b6915ff793b844e12436680 patch
• https://git.kernel.org/stable/c/f2b579a0c37c0df19603d719894a942a295f634a patch
• https://git.kernel.org/stable/c/f94800fbc26ccf7c81eb791707b038a57aa39a18 patch