Bug 2394615 (CVE-2025-39757)

Summary: CVE-2025-39757 kernel: ALSA: usb-audio: Validate UAC3 cluster segment descriptors
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedKeywords: Security
Target Milestone: ---   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: ---
Doc Text:
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 2025-09-11 17:02:30 UTC 
In the Linux kernel, the following vulnerability has been resolved:

ALSA: usb-audio: Validate UAC3 cluster segment descriptors

UAC3 class segment descriptors need to be verified whether their sizes
match with the declared lengths and whether they fit with the
allocated buffer sizes, too.  Otherwise malicious firmware may lead to
the unexpected OOB accesses.
Comment 1 Jon Moroney 2025-09-11 19:48:37 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025091144-CVE-2025-39757-e212@gregkh/T
Comment 4 errata-xmlrpc 2025-10-13 04:01:38 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2025:17760 https://access.redhat.com/errata/RHSA-2025:17760
Comment 5 errata-xmlrpc 2025-10-13 08:59:10 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2025:17776 https://access.redhat.com/errata/RHSA-2025:17776