Bug 2468268 (CVE-2026-43473)

Summary:	CVE-2026-43473 kernel: scsi: mpi3mr: Add NULL checks when resetting request and reply queues
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
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's mpi3mr SCSI driver. When the creation of reply or request queues fails, the driver may attempt to access and modify memory that has already been freed during cleanup. This can be exploited by a local user, leading to a system crash and 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 2026-05-08 15:07:56 UTC

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

scsi: mpi3mr: Add NULL checks when resetting request and reply queues

The driver encountered a crash during resource cleanup when the reply and
request queues were NULL due to freed memory.  This issue occurred when the
creation of reply or request queues failed, and the driver freed the memory
first, but attempted to mem set the content of the freed memory, leading to
a system crash.

Add NULL pointer checks for reply and request queues before accessing the
reply/request memory during cleanup

Comment 1 Keith Grant 2026-05-09 01:59:38 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026050805-CVE-2026-43473-cae2@gregkh/T