CVE-2026-97904

medium

Description

In the Linux kernel, the following vulnerability has been resolved: cpufreq: initialize policy rwsem before sysfs publication cpufreq_policy_alloc() initializes policy->rwsem after kobject_init_and_add() has created the policy sysfs directory and its default attributes. A sysfs access can therefore reach a policy callback before the semaphore has been initialized. Initialize policy->rwsem before publishing the policy kobject so sysfs callbacks always see an initialized semaphore.

References

https://git.kernel.org/stable/c/dc11263cb05ed519758fd135fe08d611bad1f241

https://git.kernel.org/stable/c/c9d8435814f2ac533c40fe3f35d94235bc3a9443

https://git.kernel.org/stable/c/b22193eea2ce32c39dda5e09f9c2be2f3fd7eb4a

https://git.kernel.org/stable/c/b14987a0f73777644099f47f01aba3b0f9dc6c27

https://git.kernel.org/stable/c/82a54923700da5de83ce2b26c0b43f6b5005c8f1

https://git.kernel.org/stable/c/3e5d1bf4bd687beb2cb4e32a07af695455925588

https://git.kernel.org/stable/c/2cee937f779f69b195b37bbec1e888da9bfe9d58

https://git.kernel.org/stable/c/27c9b491bf7604e83b50c3bbfa18a30266ff345f

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-86758

Details

Source: Mitre, NVD

Published: 2026-09-25

Updated: 2026-10-03

Risk Information

CVSS v2

Base Score: 7.2

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 5.5

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Severity: Medium

EPSS

EPSS: 0.0021