Bug 2516302 (CVE-2026-72024)

Summary:	CVE-2026-72024 kernel: mac802154: remove interfaces with RCU list deletion
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:	rhel-process-autobot, watson-tool-maintainers
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	---
Doc Text:	A flaw was found in the mac802154 component of the Linux kernel. When network interfaces are removed, the system incorrectly manages memory, which can cause a program to try and use memory that is no longer available or has been corrupted. This vulnerability could lead to system instability or a denial of service, making the affected system unresponsive.	Story Points:	---
Clone Of:		Environment:
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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 2026-08-15 06:05:23 UTC

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

mac802154: remove interfaces with RCU list deletion

Queue wake, stop, and disable paths walk local->interfaces under RCU.
The bulk hardware teardown path removes entries with list_del(), so an
asynchronous transmit completion can follow a poisoned list node in
ieee802154_wake_queue().

Use list_del_rcu() as in the single-interface removal path. The following
unregister_netdevice() waits for in-flight RCU readers before freeing the
netdevice, so no separate grace-period wait is needed.

Comment 1 Keith Grant 2026-08-17 16:23:26 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026081510-CVE-2026-72024-7fde@gregkh/T