Bug 2467197 (CVE-2026-43165)

Summary:	CVE-2026-43165 kernel: hwmon: (nct7363) Fix a resource leak in nct7363_present_pwm_fanin
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 hwmon subsystem, specifically in the nct7363 driver. This resource leak occurs in the `nct7363_present_pwm_fanin` function because a device node reference is not properly released after being acquired. An attacker with local access could potentially exploit this to cause resource exhaustion, leading to a Denial of Service (DoS) on the system.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
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 13:10:15 UTC

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

hwmon: (nct7363) Fix a resource leak in nct7363_present_pwm_fanin

When calling of_parse_phandle_with_args(), the caller is responsible
to call of_node_put() to release the reference of device node.
In nct7363_present_pwm_fanin, it does not release the reference,
causing a resource leak.

Comment 1 Keith Grant 2026-05-06 19:37:48 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026050633-CVE-2026-43165-a628@gregkh/T