Bug 2516249 (CVE-2026-72445)

Summary:	CVE-2026-72445 kernel: ALSA: usb-audio: qcom: clear opened when stream enable fails
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
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 ALSA USB audio driver for QCOM devices. An attacker, by providing an invalid service interval during stream enablement, can cause the audio substream to become unresponsive. This can lead to a Denial of Service (DoS) for the affected audio device, requiring a disable or disconnect to restore functionality.	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 06:02:38 UTC

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

ALSA: usb-audio: qcom: clear opened when stream enable fails

On enable, subs->opened is set before the service_interval is validated;
an invalid interval jumps to the response label without clearing it, so
the substream is wedged at -EBUSY until a disable or disconnect.

Clear subs->opened on the enable error path.

Comment 1 gkamathe 2026-08-17 12:43:18 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026081530-CVE-2026-72445-e0bc@gregkh/T