Bug 2464377 (CVE-2026-43014)

Summary:	CVE-2026-43014 kernel: net: macb: properly unregister fixed rate clocks
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	unspecified	CC:	rhel-process-autobot, watson-tool-maintainers
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	---
Doc Text:	A flaw was found in the Linux kernel's macb network driver. The driver improperly handles the unregistration of fixed rate clocks, causing a resource leak. This issue can lead to resource exhaustion, potentially allowing a local attacker to cause a Denial of Service (DoS) by making the system unresponsive or unstable.	Story Points:	---
Clone Of:		Environment:
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Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2026-05-01 15:03:16 UTC

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

net: macb: properly unregister fixed rate clocks

The additional resources allocated with clk_register_fixed_rate() need
to be released with clk_unregister_fixed_rate(), otherwise they are lost.

Comment 1 Keith Grant 2026-05-01 16:27:49 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026050156-CVE-2026-43014-d106@gregkh/T