Bug 2532306 (CVE-2026-89572)

Summary:	CVE-2026-89572 kernel: cpufreq: apple-soc: Fix OPP table cleanup
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	akhatavk, aos-team-art-private, asdas, dpaolell, jdelft, jupierce, lgarciaa, mbiarnes, ppalepu, ppostler, prdhamdh, rhel-process-autobot, sghai, sidsharm, suppawar, vlaad, watson-tool-maintainers
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
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Doc Text:	A flaw was found in the `cpufreq` apple-soc driver of the Linux kernel. The `apple_soc_cpufreq_init()` function, responsible for adding Operating Performance Point (OPP) tables from firmware, does not properly remove these tables in certain failure scenarios. This improper cleanup can lead to resource management issues within the kernel.	Story Points:	---
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2026-09-11 22:15:45 UTC

In the Linux kernel, the following vulnerability has been resolved:

cpufreq: apple-soc: Fix OPP table cleanup

apple_soc_cpufreq_init() adds OPP tables from firmware, but
some failure paths do not remove them. The driver also uses
dev_pm_opp_remove_all_dynamic(), which is not the right cleanup
helper for OPP tables loaded from firmware.

Use the cpumask OPP helper after the policy CPU mask has been
populated. Pair it with the matching cpumask remove helper on
failure paths and in apple_soc_cpufreq_exit(). This also removes
the separate dev_pm_opp_set_sharing_cpus() call, as the cpumask
helper loads the DT OPP tables for all CPUs in the policy.

Comment 1 Keith Grant 2026-09-18 16:23:36 UTC

Upstream advisory:
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89572.mbox