Bug 2337324 (CVE-2024-55639)

Summary:	CVE-2024-55639 kernel: net: renesas: rswitch: avoid use-after-put for a device tree node
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	unspecified	CC:	dfreiber, drow, jburrell, vkumar
Target Milestone:	---	Keywords:	Security
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Hardware:	All
OS:	Linux
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
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Description OSIDB Bzimport 2025-01-13 11:55:25 UTC

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

net: renesas: rswitch: avoid use-after-put for a device tree node

The device tree node saved in the rswitch_device structure is used at
several driver locations. So passing this node to of_node_put() after
the first use is wrong.

Move of_node_put() for this node to exit paths.

Comment 1 Avinash Hanwate 2025-01-13 13:46:46 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025011159-CVE-2024-55639-b3d2@gregkh/T