CVE-2026-64373

Katalog CVE

CVSS 4.7 · Medium EPSS 0,09%

Kerentanan Concurrent Execution using Shared Resource with Improper Synchronization ('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: cpufreq: Fix hotplug-suspend race during reboot During system reboot, cpufreq_suspend() is called via the kernel_restart() -> device_shutdown() path. Unlike the normal system suspend path, the reboot path does not call freeze_processes(), so userspace processes and kernel threads remain active. This allows CPU hotplug operations to run concurrently with cpufreq_suspend(). The original code has no synchronization with CPU hotplug, leading to a race condition where governor_data can be freed by the hotplug path while cpufreq_suspend() is still accessing it, resulting in a null pointer dereference: Unable to handle kernel NULL pointer dereference Call Trace: do_kernel_fault+0x28/0x3c cpufreq_suspend+0xdc/0x160 device_shutdown+0x18/0x200 kernel_restart+0x40/0x80 arm64_sys_reboot+0x1b0/0x200 Fix this by adding cpus_read_lock()/cpus_read_unlock() to cpufreq_suspend() to block CPU hotplug operations while suspend is in progress. [ rjw: Changelog edits ]

Rincian

Terbit di NVD

25 Juli 2026

Terakhir diubah

8 September 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-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

EPSS (30 hari)

0,09% peluang dieksploitasi; lebih tinggi dari 0,4% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://git.kernel.org/stable/c/6d5dd354c37abaf4d60400c55c71f23ba2b33639 patch
• https://git.kernel.org/stable/c/6e175c00c62dca3d91b987015808b5d52e8db2b4 patch
• https://git.kernel.org/stable/c/73255d702c7560185fd5951aadcf7eb057c2f453 patch
• https://git.kernel.org/stable/c/9103078c7b3091a2fbb52af176f95982ee7dd7f8 patch
• https://git.kernel.org/stable/c/a0106b41f9a724868d390b8b3b4ea5ca0e04ea53 patch
• https://git.kernel.org/stable/c/a0ef2fc89d28ca62923376c4b8ffaa57136a36be patch
• https://git.kernel.org/stable/c/a9029dd55696c651ee46912afa2a166fa456bb3e patch
• https://git.kernel.org/stable/c/cd4524ff6567fa4458a5bec4b017105e671d393e patch