Bug 2467123 (CVE-2026-43143)

Summary:	CVE-2026-43143 kernel: mfd: core: Add locking around 'mfd_of_node_list'
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	rhel-process-autobot, watson-tool-maintainers
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
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Fixed In Version:		Doc Type:	---
Doc Text:	A flaw was found in the Linux kernel's multi-function device (mfd) core module. The `mfd_of_node_list` lacked proper locking mechanisms, allowing for unsafe manipulation of the list. This concurrency issue could lead to system crashes, resulting in a Denial of Service (DoS).	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 2026-05-06 13:05:32 UTC

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

mfd: core: Add locking around 'mfd_of_node_list'

Manipulating a list in the kernel isn't safe without some sort of
mutual exclusion. Add a mutex any time we access / modify
'mfd_of_node_list' to prevent possible crashes.

Comment 1 Keith Grant 2026-05-06 18:30:06 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026050625-CVE-2026-43143-1513@gregkh/T