Bug 2482121 (CVE-2026-45874)

Summary:	CVE-2026-45874 kernel: phy: freescale: imx8qm-hsio: fix NULL pointer dereference
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, within the `phy: freescale: imx8qm-hsio` component. This vulnerability occurs when a specific pointer, `refclk_pad`, is not properly initialized and is later used without validation. This can lead to a NULL pointer dereference, which may cause the system to crash. Such a crash results in a Denial of Service (DoS), making the affected system unavailable.	Story Points:	---
Clone Of:		Environment:
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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 15:12:19 UTC

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

phy: freescale: imx8qm-hsio: fix NULL pointer dereference

During the probe the refclk_pad pointer is set to NULL if the
'fsl,refclk-pad-mode' property is not defined in the devicetree node. But
in imx_hsio_configure_clk_pad() this pointer is unconditionally used which
could result in a NULL pointer dereference. So check the pointer before to
use it.

Comment 1 Keith Grant 2026-05-28 03:36:12 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026052713-CVE-2026-45874-a1c7@gregkh/T