Bug 2536516 (CVE-2026-92498)

Summary:	CVE-2026-92498 kernel: wifi: ath6kl: avoid buffer overreads in WMI event handlers
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:	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 ath6kl Wi-Fi driver. Insufficient length checks in several Wireless Management Interface (WMI) event handlers, specifically `ath6kl_wmi_scan_complete_rx()`, `ath6kl_wmi_addba_req_event_rx()`, and `ath6kl_wmi_delba_req_event_rx()`, allow the system to read beyond the allocated buffer. This buffer overread could lead to information disclosure or potentially a denial of service (DoS) by crashing the system.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
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Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2026-09-17 18:16:01 UTC

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

wifi: ath6kl: avoid buffer overreads in WMI event handlers

The following WMI event handlers currently read from the event buffer
without first verifying that the message was large enough to hold the
expected event:
ath6kl_wmi_scan_complete_rx()
ath6kl_wmi_addba_req_event_rx()
ath6kl_wmi_delba_req_event_rx()

Add length checks to prevent overread.

Comment 1 gkamathe 2026-09-20 18:47:20 UTC

Upstream advisory:
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-92498.mbox