Bug 2481927 (CVE-2026-45996)

Summary:	CVE-2026-45996 kernel: spi: imx: fix use-after-free on unbind
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:	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, specifically within the `spi: imx` driver. This vulnerability, known as a use-after-free, occurs when the system attempts to access memory that has already been released, leading to unpredictable behavior. A local attacker could potentially exploit this issue to cause the system to crash, resulting in a denial of service, or in some cases, gain elevated privileges.	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 2026-05-27 15:02:45 UTC

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

spi: imx: fix use-after-free on unbind

The SPI subsystem frees the controller and any subsystem allocated
driver data as part of deregistration (unless the allocation is device
managed).

Take another reference before deregistering the controller so that the
driver data is not freed until the driver is done with it.

Comment 1 Keith Grant 2026-05-27 21:34:19 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026052741-CVE-2026-45996-8dc5@gregkh/T