Bug 2492754 (CVE-2026-53257)

Summary:	CVE-2026-53257 kernel: wifi: cfg80211: enforce HE/EHT cap/oper consistency
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
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 Linux kernel. An issue within the mac80211 Wi-Fi subsystem, specifically related to the enforcement of High Efficiency (HE) and Extremely High Throughput (EHT) capabilities and operations, could lead to a system crash. This vulnerability arises when HE/EHT capabilities are set without corresponding operational elements, potentially allowing a local or adjacent network attacker to trigger a denial of service.	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 2026-06-25 10:03:58 UTC

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

wifi: cfg80211: enforce HE/EHT cap/oper consistency

Xiang Mei reports that mac80211 could crash if eht_cap is set
but eht_oper isn't. Rather than fixing that for the individual
user(s), enforce that both HE/EHT have consistent elements.

Comment 1 Keith Grant 2026-06-25 23:11:47 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026062515-CVE-2026-53257-5df7@gregkh/T