cpufreq: Fix hotplug-suspend race during reboot (Linux Linux)

CVE-2026-64373
MEDIUM 4.7

En bref

Source
NVD
EPSS
EPSS 0.09 % · centile 0 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Analyzed

Description

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 ]

Faiblesses (CWE)

  • CWE-362 — Situation de compétition

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1MEDIUM 4.7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:HNVD · nvd@nist.gov (Primary)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linuxaffected 65650b35133ff20f0c9ef0abd5c3c66dbce3ae57 < 6d5dd354c37abaf4d60400c55c71f23ba2b33639 ; affected 65650b35133ff20f0c9ef0abd5c3c66dbce3ae57 < 9103078c7b3091a2fbb52af176f95982ee7dd7f8 ; affected 65650b35133ff20f0c9ef0abd5c3c66dbce3ae57 < cd4524ff6567fa4458a5bec4b017105e671d393e ; affected 65650b35133ff20f0c9ef0abd5c3c66dbce3ae57 < 73255d702c7560185fd5951aadcf7eb057c2f453 ; affected 65650b35133ff20f0c9ef0abd5c3c66dbce3ae57 < a0ef2fc89d28ca62923376c4b8ffaa57136a36be ; affected 65650b35133ff20f0c9ef0abd5c3c66dbce3ae57 < 6e175c00c62dca3d91b987015808b5d52e8db2b4
Linux · Linuxaffected 5.4 ; unaffected 0 < 5.4 ; unaffected 5.10.261 ≤ 5.10.* ; unaffected 5.15.212 ≤ 5.15.* ; unaffected 6.1.178 ≤ 6.1.* ; unaffected 6.6.145 ≤ 6.6.*

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD