Bug 2559570 (CVE-2026-98874)

Summary:	CVE-2026-98874 kernel: wifi: iwlwifi: mld: don't WARN on WoWLAN suspend w/o netdetect
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:	akhatavk, aos-team-art-private, asdas, dpaolell, jdelft, jupierce, lgarciaa, mbiarnes, ppalepu, ppostler, prdhamdh, rhel-process-autobot, sghai, sidsharm, suppawar, vlaad, 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 Linux kernel's iwlwifi driver. A local user can trigger an unintended kernel warning by configuring Wake on Wireless LAN (WoWLAN) and suspending the system while disconnected from a network. On systems configured to panic or halt on kernel warnings, this flaw may lead to a system crash and a denial of service (DoS).	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 2026-10-23 12:03:45 UTC

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

wifi: iwlwifi: mld: don't WARN on WoWLAN suspend w/o netdetect

Clearly, from a user perspective, it must be valid to configure
WoWLAN and then suspend while not connected to a network. Since
mac80211 doesn't distinguish these cases and simply calls the
driver to suspend whenever WoWLAN is configured, the driver has
to cleanly handle the case where it's called for WoWLAN, it's
not connected but there's also no netdetect configured.

Remove the WARN_ON() and keep returning 1 to disconnect and
then suspend.

Comment 1 Mauro Matteo Cascella 2026-10-26 10:20:35 UTC

Upstream advisory:
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98874.mbox