Bug 2467147 (CVE-2026-43267)

Summary:	CVE-2026-43267 kernel: wifi: rtw89: fix potential zero beacon interval in beacon tracking
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
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Fixed In Version:		Doc Type:	---
Doc Text:	A flaw was found in the `rtw89` Wi-Fi driver within the Linux kernel. This vulnerability occurs when the beacon interval, a timing parameter used in Wi-Fi communication, is set to zero. This can lead to a division by zero error during subsequent calculations, potentially causing system instability or a denial of service (DoS). An attacker could potentially exploit this by sending a specially crafted Wi-Fi beacon.	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 2026-05-06 13:06:52 UTC

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

wifi: rtw89: fix potential zero beacon interval in beacon tracking

During fuzz testing, it was discovered that bss_conf->beacon_int
might be zero, which could result in a division by zero error in
subsequent calculations. Set a default value of 100 TU if the
interval is zero to ensure stability.

Comment 1 Keith Grant 2026-05-06 23:52:36 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026050609-CVE-2026-43267-d9b7@gregkh/T