Bug 2365024 (CVE-2025-37823)

Summary:	CVE-2025-37823 kernel: net_sched: hfsc: Fix a potential UAF in hfsc_dequeue() too
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	CC:	dfreiber, drow, jburrell, vkumar
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2025-05-08 07:02:06 UTC

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

net_sched: hfsc: Fix a potential UAF in hfsc_dequeue() too

Similarly to the previous patch, we need to safe guard hfsc_dequeue()
too. But for this one, we don't have a reliable reproducer.

Comment 1 Avinash Hanwate 2025-05-08 11:12:11 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025050821-CVE-2025-37823-d739@gregkh/T

Comment 3 errata-xmlrpc 2025-09-02 06:45:24 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2025:15005 https://access.redhat.com/errata/RHSA-2025:15005

Comment 4 errata-xmlrpc 2025-09-02 06:54:19 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2025:15011 https://access.redhat.com/errata/RHSA-2025:15011

Comment 6 errata-xmlrpc 2025-10-02 09:54:02 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Extended Update Support

Via RHSA-2025:17241 https://access.redhat.com/errata/RHSA-2025:17241

Comment 9 errata-xmlrpc 2025-10-13 00:22:47 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2025:17734 https://access.redhat.com/errata/RHSA-2025:17734

Comment 11 errata-xmlrpc 2025-10-15 07:05:07 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions

Via RHSA-2025:18054 https://access.redhat.com/errata/RHSA-2025:18054

Comment 12 errata-xmlrpc 2025-10-15 11:36:44 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions

Via RHSA-2025:18098 https://access.redhat.com/errata/RHSA-2025:18098