Bug 2541422 (CVE-2026-100078)

Summary:	CVE-2026-100078 kernel: wifi: iwlwifi: mei: pass correct argument to function
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:	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:
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Doc Text:	A flaw was found in the Linux kernel's Intel Wi-Fi driver (iwlwifi). An incorrect argument passed during communication over the Management Engine Interface (MEI) causes an invalid memory reference. A local authenticated attacker on a system with affected hardware could exploit this vulnerability to crash the system, resulting in a Denial of Service (DoS).	Story Points:	---
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Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2026-09-25 13:27:14 UTC

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

wifi: iwlwifi: mei: pass correct argument to function

The first argument to iwl_mei_write_cyclic_buf() should be the cldev
but the q_head pointer is passed instead. Fix it.

Comment 1 Mauro Matteo Cascella 2026-09-30 15:33:27 UTC

Upstream advisory:
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-100078.mbox