Bug 2516257 (CVE-2026-72259)

Summary:	CVE-2026-72259 kernel: ASoC: mediatek: mt8192: Release reserved memory on cleanup
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 ASoC (Audio System on Chip) Mediatek MT8192 audio driver. This vulnerability occurs because the driver fails to release reserved memory after a successful assignment during the probe process. This oversight can lead to a memory leak, potentially causing system instability or a Denial of Service (DoS) due to resource exhaustion over extended operation.	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 2026-08-15 06:03:01 UTC

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

ASoC: mediatek: mt8192: Release reserved memory on cleanup

The MT8192 AFE probe calls of_reserved_mem_device_init() and falls
back to preallocated buffers when no reserved memory region is
available. When the reserved memory assignment succeeds, however, the
driver never releases it.

Register a devm cleanup action after a successful reserved-memory
assignment so the assignment is released on probe failure and driver
unbind.

Comment 1 gkamathe 2026-08-17 14:13:12 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026081554-CVE-2026-72259-a20a@gregkh/T