Bug 2492401 (CVE-2026-53113)

Summary:	CVE-2026-53113 kernel: wifi: ath11k: fix memory leaks in beacon template setup
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
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's ath11k Wi-Fi driver. Specifically, the `ath11k_mac_setup_bcn_tmpl_ema()` and `ath11k_mac_setup_bcn_tmpl_mbssid()` functions, responsible for setting up beacon templates, fail to release allocated memory when an error occurs during parameter setup. This oversight can lead to memory leaks, potentially resulting in a Denial of Service (DoS) over time as system resources are exhausted.	Story Points:	---
Clone Of:		Environment:
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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 2026-06-24 18:10:18 UTC

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

wifi: ath11k: fix memory leaks in beacon template setup

The functions ath11k_mac_setup_bcn_tmpl_ema() and
ath11k_mac_setup_bcn_tmpl_mbssid() allocate memory for beacon templates
but fail to free it when parameter setup returns an error.

Since beacon templates must be released during normal execution, they
must also be released in the error handling paths to prevent memory
leaks.

Fix this by using unified exit paths with proper cleanup in the respective
error paths.

Compile tested only. Issue found using a prototype static analysis tool
and code review.

Comment 1 Mauro Matteo Cascella 2026-06-26 13:01:19 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026062414-CVE-2026-53113-c4f2@gregkh/T