Bug 2507065 (CVE-2026-64489)

Summary:	CVE-2026-64489 kernel: ALSA: ymfpci: check snd_ctl_new1() return value
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 ALSA (Advanced Linux Sound Architecture) ymfpci driver in the Linux kernel. This vulnerability occurs because the 'snd_ctl_new1()' function, which allocates memory, may return a null value if memory allocation fails. The driver then attempts to use this null value without proper checks, leading to a null pointer dereference. A local attacker could exploit this to cause a denial of service (DoS), resulting in a system crash.	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 2026-07-25 10:03:11 UTC

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

ALSA: ymfpci: check snd_ctl_new1() return value

snd_ctl_new1() can return NULL when memory allocation fails.
snd_ymfpci_create_spdif_controls() does not check the return value
before dereferencing kctl->id.device, which can lead to a NULL pointer
dereference.

Add NULL checks after snd_ctl_new1() calls and return -ENOMEM if any
fails.

Comment 1 Mauro Matteo Cascella 2026-07-29 22:36:37 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026072550-CVE-2026-64489-5b95@gregkh/T