Bug 2467072 (CVE-2026-43231)

Summary:	CVE-2026-43231 kernel: media: radio-keene: fix memory leak in error path
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	unspecified	Docs Contact:
Priority:	unspecified
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 `media: radio-keene` driver within the Linux kernel. This vulnerability occurs due to a memory leak in the `usb_keene_probe()` function's error path. If device registration fails, the video for Linux 2 (v4l2) control handler is not properly released, causing memory to be consumed over time. This can eventually lead to a Denial of Service (DoS) condition, making the system unstable or unresponsive.	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 13:02:47 UTC

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

media: radio-keene: fix memory leak in error path

Fix a memory leak in usb_keene_probe(). The v4l2 control handler is
initialized and controls are added, but if v4l2_device_register() or
video_register_device() fails afterward, the handler was never freed,
leaking memory.

Add v4l2_ctrl_handler_free() call in the err_v4l2 error path to ensure
the control handler is properly freed for all error paths after it is
initialized.

Comment 1 Keith Grant 2026-05-06 22:27:14 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026050656-CVE-2026-43231-6c4b@gregkh/T