Bug 2482627 (CVE-2026-46179)

Summary:	CVE-2026-46179 kernel: ASoC: SOF: Don't allow pointer operations on unconfigured streams
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 Advanced Linux Sound Architecture (ALSA) System on Chip (ASoC) Sound Open Firmware (SOF) subsystem. This vulnerability occurs when reporting the pointer for a compressed stream, where the I/O frame position is divided by values that can be zero if the stream parameters are unconfigured. An attacker could potentially trigger a divide-by-zero error, leading to a system crash and a 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 2026-05-28 11:06:32 UTC

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

ASoC: SOF: Don't allow pointer operations on unconfigured streams

When reporting the pointer for a compressed stream we report the current
I/O frame position by dividing the position by the number of channels
multiplied by the number of container bytes. These values default to 0 and
are only configured as part of setting the stream parameters so this allows
a divide by zero to be configured. Validate that they are non zero,
returning an error if not

Comment 1 Keith Grant 2026-05-28 14:41:42 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026052829-CVE-2026-46179-2dba@gregkh/T