cpufreq: initialize policy rwsem before sysfs publication (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.22 % · percentile 12 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Received
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/c9d8435814f2ac533c40fe3f35d94235bc3a9443
- https://git.kernel.org/stable/c/82a54923700da5de83ce2b26c0b43f6b5005c8f1
- https://git.kernel.org/stable/c/b14987a0f73777644099f47f01aba3b0f9dc6c27
- https://git.kernel.org/stable/c/b22193eea2ce32c39dda5e09f9c2be2f3fd7eb4a
- https://git.kernel.org/stable/c/dc11263cb05ed519758fd135fe08d611bad1f241
- https://git.kernel.org/stable/c/27c9b491bf7604e83b50c3bbfa18a30266ff345f
- https://git.kernel.org/stable/c/2cee937f779f69b195b37bbec1e888da9bfe9d58
- https://git.kernel.org/stable/c/3e5d1bf4bd687beb2cb4e32a07af695455925588
European references
- ENISA EUVD · EUVD-2026-86758
- GCVE · GCVE-0-2026-97904
CERT-FR advisories
- CERTFR-2026-AVI-1385 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1375 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1289 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1253 — Multiples vulnérabilités dans le noyau Linux de Debian · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected 2fc3384dc75bf7333384c7a16d12c796f61c3f56 < c9d8435814f2ac533c40fe3f35d94235bc3a9443 ; affected 2fc3384dc75bf7333384c7a16d12c796f61c3f56 < 82a54923700da5de83ce2b26c0b43f6b5005c8f1 ; affected 2fc3384dc75bf7333384c7a16d12c796f61c3f56 < b14987a0f73777644099f47f01aba3b0f9dc6c27 ; affected 2fc3384dc75bf7333384c7a16d12c796f61c3f56 < b22193eea2ce32c39dda5e09f9c2be2f3fd7eb4a ; affected 2fc3384dc75bf7333384c7a16d12c796f61c3f56 < dc11263cb05ed519758fd135fe08d611bad1f241 ; affected 2fc3384dc75bf7333384c7a16d12c796f61c3f56 < 27c9b491bf7604e83b50c3bbfa18a30266ff345f |
| Linux · Linux | affected 4.2 ; unaffected 0 < 4.2 ; unaffected 5.10.271 ≤ 5.10.* ; unaffected 5.15.222 ≤ 5.15.* ; unaffected 6.1.189 ≤ 6.1.* ; unaffected 6.6.158 ≤ 6.6.* |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |