Bug 2432395 (CVE-2025-71158)

Summary:	CVE-2025-71158 kernel: Linux kernel: Denial of Service in gpio: mpsse driver via device unplug
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
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 `gpio: mpsse` driver. A local attacker with physical access could cause a system crash by unplugging a device while an Interrupt Request (IRQ) worker is actively running. This vulnerability leads to a Denial of Service (DoS) as the system becomes unresponsive.	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 2026-01-23 16:03:08 UTC

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

gpio: mpsse: ensure worker is torn down

When an IRQ worker is running, unplugging the device would cause a
crash. The sealevel hardware this driver was written for was not
hotpluggable, so I never realized it.

This change uses a spinlock to protect a list of workers, which
it tears down on disconnect.

Comment 1 Keith Grant 2026-01-23 18:42:00 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026012344-CVE-2025-71158-1cfa@gregkh/T