Bug 2394601 (CVE-2025-39760)

Summary:	CVE-2025-39760 kernel: Linux kernel: Denial of Service via out-of-bounds read in USB configuration parsing
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	Keywords:	Security
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	---
Doc Text:	A flaw was found in the Linux kernel's USB core configuration parsing. Specifically, the `usb_parse_ss_endpoint_companion()` function incorrectly checks the descriptor type before its length, which can lead to reading data beyond the intended buffer. This out-of-bounds read vulnerability could allow a local attacker to cause a system crash, resulting in a Denial of Service (DoS).	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 17:01:37 UTC

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

usb: core: config: Prevent OOB read in SS endpoint companion parsing

usb_parse_ss_endpoint_companion() checks descriptor type before length,
enabling a potentially odd read outside of the buffer size.

Fix this up by checking the size first before looking at any of the
fields in the descriptor.

Comment 1 Jon Moroney 2025-09-11 20:24:04 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025091145-CVE-2025-39760-2d5f@gregkh/T

Comment 3 errata-xmlrpc 2026-02-02 03:22:01 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:1661 https://access.redhat.com/errata/RHSA-2026:1661

Comment 4 errata-xmlrpc 2026-02-02 03:53:41 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:1662 https://access.redhat.com/errata/RHSA-2026:1662

Comment 6 errata-xmlrpc 2026-02-09 02:13:15 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:2212 https://access.redhat.com/errata/RHSA-2026:2212

Comment 7 errata-xmlrpc 2026-02-16 17:27:30 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:2759 https://access.redhat.com/errata/RHSA-2026:2759

Comment 8 errata-xmlrpc 2026-02-17 00:43:03 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Extended Update Support

Via RHSA-2026:2766 https://access.redhat.com/errata/RHSA-2026:2766

Comment 9 errata-xmlrpc 2026-02-24 00:34:27 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:3124 https://access.redhat.com/errata/RHSA-2026:3124

Comment 10 errata-xmlrpc 2026-02-25 00:18:08 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions
  Red Hat Enterprise Linux 8.6 Telecommunications Update Service

Via RHSA-2026:3268 https://access.redhat.com/errata/RHSA-2026:3268

Comment 11 errata-xmlrpc 2026-02-25 00:18:54 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:3267 https://access.redhat.com/errata/RHSA-2026:3267

Comment 12 errata-xmlrpc 2026-02-25 04:03:34 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
  Red Hat Enterprise Linux 8.8 Telecommunications Update Service

Via RHSA-2026:3277 https://access.redhat.com/errata/RHSA-2026:3277

Comment 13 errata-xmlrpc 2026-02-25 08:01:42 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions

Via RHSA-2026:3293 https://access.redhat.com/errata/RHSA-2026:3293

Comment 14 errata-xmlrpc 2026-02-25 14:15:01 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:3358 https://access.redhat.com/errata/RHSA-2026:3358

Comment 15 errata-xmlrpc 2026-02-25 15:16:36 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On

Via RHSA-2026:3360 https://access.redhat.com/errata/RHSA-2026:3360

Comment 16 errata-xmlrpc 2026-02-25 18:58:20 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions

Via RHSA-2026:3375 https://access.redhat.com/errata/RHSA-2026:3375

Comment 17 errata-xmlrpc 2026-02-26 04:22:47 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.2 Advanced Update Support

Via RHSA-2026:3388 https://access.redhat.com/errata/RHSA-2026:3388

Comment 18 errata-xmlrpc 2026-03-03 09:51:21 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7 Extended Lifecycle Support

Via RHSA-2026:3634 https://access.redhat.com/errata/RHSA-2026:3634

Comment 19 errata-xmlrpc 2026-03-03 20:34:17 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7 Extended Lifecycle Support

Via RHSA-2026:3685 https://access.redhat.com/errata/RHSA-2026:3685

Comment 20 errata-xmlrpc 2026-03-09 09:41:38 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:4012 https://access.redhat.com/errata/RHSA-2026:4012