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
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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:	---
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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