Bug 2404108 (CVE-2025-39971)

Summary:	CVE-2025-39971 kernel: i40e: fix idx validation in config queues msg
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 in the Intel i40e network driver such that in the function i40e_vc_config_queues_msg(), when iterating over vf->ch[idx], the idx value is not properly validated against the range of active/initialized traffic classes (TCs). An attacker with local privileges could supply a malformed value causing an out-of-bounds access, potentially leading to memory corruption, system crash, or possible arbitrary code execution.	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 2025-10-15 08:02:30 UTC

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

i40e: fix idx validation in config queues msg

Ensure idx is within range of active/initialized TCs when iterating over
vf->ch[idx] in i40e_vc_config_queues_msg().

Comment 1 Alexander B 2025-10-16 10:59:59 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025101556-CVE-2025-39971-97e2@gregkh/T

Comment 6 errata-xmlrpc 2025-11-17 09:26:45 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2025:21469 https://access.redhat.com/errata/RHSA-2025:21469

Comment 7 errata-xmlrpc 2025-11-24 02:36:07 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2025:21917 https://access.redhat.com/errata/RHSA-2025:21917

Comment 8 errata-xmlrpc 2025-11-24 06:19:25 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2025:21920 https://access.redhat.com/errata/RHSA-2025:21920

Comment 9 errata-xmlrpc 2025-11-24 10:21:12 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2025:21933 https://access.redhat.com/errata/RHSA-2025:21933

Comment 10 errata-xmlrpc 2025-12-01 09:21:23 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2025:22395 https://access.redhat.com/errata/RHSA-2025:22395

Comment 11 errata-xmlrpc 2025-12-02 10:57:18 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2025:22571 https://access.redhat.com/errata/RHSA-2025:22571

Comment 12 errata-xmlrpc 2026-01-07 00:47:03 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Extended Update Support

Via RHSA-2026:0173 https://access.redhat.com/errata/RHSA-2026:0173

Comment 15 errata-xmlrpc 2026-01-14 00:19:12 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-2026:0536 https://access.redhat.com/errata/RHSA-2026:0536

Comment 16 errata-xmlrpc 2026-01-15 01:08:00 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.2 Advanced Update Support

Via RHSA-2026:0643 https://access.redhat.com/errata/RHSA-2026:0643

Comment 17 errata-xmlrpc 2026-01-28 00:23:11 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:1443 https://access.redhat.com/errata/RHSA-2026:1443

Comment 18 errata-xmlrpc 2026-01-28 00:27:32 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-2026:1445 https://access.redhat.com/errata/RHSA-2026:1445

Comment 19 errata-xmlrpc 2026-01-28 00:29:14 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:1441 https://access.redhat.com/errata/RHSA-2026:1441

Comment 20 errata-xmlrpc 2026-01-28 15:04:21 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions

Via RHSA-2026:1495 https://access.redhat.com/errata/RHSA-2026:1495

Comment 21 errata-xmlrpc 2026-01-28 15:08:07 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions

Via RHSA-2026:1494 https://access.redhat.com/errata/RHSA-2026:1494

Comment 22 errata-xmlrpc 2026-01-29 13:36:46 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7 Extended Lifecycle Support

Via RHSA-2026:1581 https://access.redhat.com/errata/RHSA-2026:1581

Comment 23 errata-xmlrpc 2026-02-02 01:13:58 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7 Extended Lifecycle Support

Via RHSA-2026:1623 https://access.redhat.com/errata/RHSA-2026:1623

Comment 24 errata-xmlrpc 2026-02-04 09:03:18 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-2026:1886 https://access.redhat.com/errata/RHSA-2026:1886