Bug 2375531 (CVE-2025-38087)

Summary:	CVE-2025-38087 kernel: net/sched: fix use-after-free in taprio_dev_notifier
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
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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 2025-06-30 08:01:16 UTC

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

net/sched: fix use-after-free in taprio_dev_notifier

Since taprio’s taprio_dev_notifier() isn’t protected by an
RCU read-side critical section, a race with advance_sched()
can lead to a use-after-free.

Adding rcu_read_lock() inside taprio_dev_notifier() prevents this.

Comment 1 Avinash Hanwate 2025-06-30 15:00:01 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025063052-CVE-2025-38087-cd0f@gregkh/T

Comment 4 errata-xmlrpc 2025-07-28 03:01:35 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Extended Update Support

Via RHSA-2025:11810 https://access.redhat.com/errata/RHSA-2025:11810

Comment 5 errata-xmlrpc 2025-08-04 09:20:56 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2025:12662 https://access.redhat.com/errata/RHSA-2025:12662

Comment 6 errata-xmlrpc 2025-08-04 16:18:38 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2025:12746 https://access.redhat.com/errata/RHSA-2025:12746