cpufreq: initialize policy rwsem before sysfs publication (CVE-2026-97904) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-97904

cpufreq: initialize policy rwsem before sysfs publication

Answer in brief

CVE-2026-97904 records a Unknown severity vulnerability in cpufreq: initialize policy rwsem before sysfs publication. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 25, 2026Updated Sep 25, 2026Source checked Sep 25, 2026First seen by HOL Sep 25, 2026Material review Sep 25, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=2fc3384dc75bf7333384c7a16d12c796f61c3f56 <dc11263cb05ed519758fd135fe08d611bad1f241 \|\| >=2fc3384dc75bf7333384c7a16d12c796f61c3f56 <27c9b491bf7604e83b50c3bbfa18a30266ff345f \|\| >=2fc3384dc75bf7333384c7a16d12c796f61c3f56 <2cee937f779f69b195b37bbec1e888da9bfe9d58 \|\| >=2fc3384dc75bf7333384c7a16d12c796f61c3f56 <3e5d1bf4bd687beb2cb4e32a07af695455925588	dc11263cb05ed519758fd135fe08d611bad1f241, 27c9b491bf7604e83b50c3bbfa18a30266ff345f, 2cee937f779f69b195b37bbec1e888da9bfe9d58, 3e5d1bf4bd687beb2cb4e32a07af695455925588
Linux/Linuxgeneric	4.2	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to dc11263cb05ed519758fd135fe08d611bad1f241 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 25, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 25, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 25, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.