Bug 2467082 (CVE-2026-43142)

Summary:	CVE-2026-43142 kernel: media: iris: gen1: Destroy internal buffers after FW releases
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's media: iris: gen1 driver. This vulnerability occurs because the driver fails to destroy internal buffers after the firmware releases them. This oversight leads to stale memory allocations, particularly when display resolutions change and new buffers are required. Over time, this can result in significant memory waste, potentially leading to a Denial of Service (DoS) due to resource exhaustion.	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 2026-05-06 13:03:18 UTC

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

media: iris: gen1: Destroy internal buffers after FW releases

After the firmware releases internal buffers, the driver was not
destroying them. This left stale allocations that were no longer used,
especially across resolution changes where new buffers are allocated per
the updated requirements. As a result, memory was wasted until session
close.

Destroy internal buffers once the release response is received from the
firmware.

Comment 1 Keith Grant 2026-05-06 18:28:08 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026050625-CVE-2026-43142-42a0@gregkh/T