Bug 2536678 (CVE-2026-90101)

Summary:	CVE-2026-90101 kernel: bnxt_en: Fix call to hardware monitoring event handler
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:	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:
Fixed In Version:		Doc Type:	---
Doc Text:	A flaw was found in the Linux kernel's Broadcom NetXtreme-C/E (bnxt_en) network adapter driver. The driver incorrectly calls the hardware monitoring event handler function `hwmon_notify_event()` with an incorrect parameter. This improper function call can lead to undefined behavior and may result in a system crash, causing a Denial of Service (DoS).	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 2026-09-17 19:05:06 UTC

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

bnxt_en: Fix call to hardware monitoring event handler

The first parameter of hwmon_notify_event() is supposed to be the hardware
monitoring device. The bnxt driver calls it with the platform device as
first parameter instead. This API break results in undefined behavior and
may result in a crash.

Pass the hardware monitoring device as parameter instead to fix the
problem.

Comment 1 Keith Grant 2026-09-22 21:38:57 UTC

Upstream advisory:
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-90101.mbox