Bug 2536239 (CVE-2026-90345)

Summary:	CVE-2026-90345 kernel: wifi: brcmfmac: fix P2P action frame handling without device vif
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:
Fixed In Version:		Doc Type:	---
Doc Text:	A flaw was found in the `brcmfmac` Wi-Fi driver in the Linux kernel. This vulnerability occurs because certain paths for handling Wi-Fi Peer-to-Peer (P2P) action frames incorrectly assume that a P2P device virtual interface (vif) is always present. A local attacker could potentially send specially crafted non-P2P public action frames, or trigger an action-frame abort after the P2P device vif has been removed, leading 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 2026-09-17 17:03:32 UTC

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

wifi: brcmfmac: fix P2P action frame handling without device vif

Some P2P action frame paths assume the P2P device vif is always
available. That is not true when userspace sends non-P2P public action
frames through the primary interface, or when action-frame abort runs
after the P2P device vif has not been created.

Fall back to the primary vif when aborting an action frame without a P2P
device vif, and guard P2P device saved IE access before using it for
peer channel search.

Comment 1 gkamathe 2026-09-22 05:05:43 UTC

Upstream advisory:
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-90345.mbox