Bug 2393533 (CVE-2025-39702)

Summary:	CVE-2025-39702 kernel: ipv6: sr: Fix MAC comparison to be constant-time
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:	---
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Hardware:	All
OS:	Linux
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
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Description OSIDB Bzimport 2025-09-05 18:04:47 UTC

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

ipv6: sr: Fix MAC comparison to be constant-time

To prevent timing attacks, MACs need to be compared in constant time.
Use the appropriate helper function for this.

Comment 1 Keith Grant 2025-09-05 19:56:56 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025090548-CVE-2025-39702-cb30@gregkh/T

Comment 3 errata-xmlrpc 2025-11-03 02:27:11 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2025:19409 https://access.redhat.com/errata/RHSA-2025:19409

Comment 4 errata-xmlrpc 2025-11-03 11:36:00 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2025:19469 https://access.redhat.com/errata/RHSA-2025:19469

Comment 6 errata-xmlrpc 2025-11-12 08:08:42 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions

Via RHSA-2025:21091 https://access.redhat.com/errata/RHSA-2025:21091

Comment 7 errata-xmlrpc 2025-11-12 11:25:13 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2025:21112 https://access.redhat.com/errata/RHSA-2025:21112

Comment 8 errata-xmlrpc 2025-11-12 12:22:10 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2025:21118 https://access.redhat.com/errata/RHSA-2025:21118

Comment 9 errata-xmlrpc 2025-11-12 15:05:09 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions

Via RHSA-2025:21136 https://access.redhat.com/errata/RHSA-2025:21136

Comment 10 errata-xmlrpc 2025-11-19 12:27:23 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Extended Update Support

Via RHSA-2025:21760 https://access.redhat.com/errata/RHSA-2025:21760

Comment 11 errata-xmlrpc 2025-11-25 17:16:02 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2025:22095 https://access.redhat.com/errata/RHSA-2025:22095

Comment 12 errata-xmlrpc 2025-11-25 18:13:48 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2025:22124 https://access.redhat.com/errata/RHSA-2025:22124