Bug 2540476 (CVE-2026-93825)

Summary:	CVE-2026-93825 kernel: spi: Add NULL check for spi_get_device_id() in spi_get_device_match_data()
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
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 Serial Peripheral Interface (SPI) subsystem. This vulnerability allows a local user to cause a Denial of Service (DoS) through a system crash. The issue occurs because the spi_get_device_match_data() function does not verify whether a device identifier exists before accessing it, leading to a NULL pointer dereference when a driver override is configured without a matching SPI entry.	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 2026-09-24 16:58:26 UTC

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

spi: Add NULL check for spi_get_device_id() in spi_get_device_match_data()

Prevent NULL pointer dereference when spi_get_device_id() returns NULL,
which can happen when using driver_override without matching SPI ID entry.

Comment 1 Mauro Matteo Cascella 2026-09-28 15:36:05 UTC

Upstream advisory:
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-93825.mbox