Bug 2516761 (CVE-2026-74332)

Summary:	CVE-2026-74332 kernel: ASoC: amd: acp-sdw-sof: Bound DAI link iteration
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 (Advanced Linux Sound Architecture System on Chip) AMD ACP SoundWire (SDW) SOF (Sound Open Firmware) driver. The `create_sdw_dailinks()` function, responsible for iterating through DAI (Digital Audio Interface) links, does not properly bound its iteration. This oversight could allow the function to read past the end of an allocated array, potentially leading to system instability or denial of service.	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 06:32:09 UTC

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

ASoC: amd: acp-sdw-sof: Bound DAI link iteration

create_sdw_dailinks() walks sof_dais until it finds an entry with
initialised cleared, but sof_dais is allocated with exactly num_ends
entries. If all entries are initialised, the loop reads past the end of
the array.

Pass the allocated entry count to create_sdw_dailinks() and stop before
reading past the array.

Comment 1 Keith Grant 2026-08-20 17:34:09 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026081555-CVE-2026-74332-d98e@gregkh/T