Bug 2525451 (CVE-2026-80616)

Summary:	CVE-2026-80616 kernel: ieee802154: Avoid calling WARN_ON() on -ENOMEM in cfg802154_switch_netns()
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	rhel-process-autobot, watson-tool-maintainers
Target Milestone:	---	Keywords:	Security
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's ieee802154 component. An unnecessary warning message (WARN_ON) can be triggered when memory allocation fails in the `cfg802154_switch_netns()` function. This can lead to diagnostic messages being logged due to deliberate fault injections, but does not pose a direct security risk such as arbitrary code execution or denial of service.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
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 2026-08-28 07:45:39 UTC

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

ieee802154: Avoid calling WARN_ON() on -ENOMEM in cfg802154_switch_netns()

It's pointless to call WARN_ON() in case of an allocation failure in
dev_change_net_namespace() and device_rename(), since it only leads to
useless splats caused by deliberate fault injections, so avoid it.

Found by Linux Verification Center (linuxtesting.org) with Syzkaller.

Comment 1 gkamathe 2026-09-01 11:24:00 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026082835-CVE-2026-80616-39d3@gregkh/T