Bug 2540462 (CVE-2026-97500)

Summary:	CVE-2026-97500 kernel: wifi: rtw89: phy: check length before parsing PHY status IE
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 Realtek Wi-Fi driver (rtw89). The driver fails to validate the length of physical layer (PHY) status information elements before parsing received data. A malicious or malfunctioning wireless device could exploit this flaw by providing status data with an unexpected length, triggering an out-of-bounds memory read. This issue primarily leads to a kernel crash and a Denial of Service (DoS).	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
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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 2026-09-24 16:55:08 UTC

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

wifi: rtw89: phy: check length before parsing PHY status IE

Hardware might report PHY status IE with unexpected length, and parser
might access out of range. Check the length ahead.

Comment 1 Mauro Matteo Cascella 2026-09-30 09:03:56 UTC

Upstream advisory:
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-97500.mbox