Bug 2363751 (CVE-2023-53050)

Summary:	CVE-2023-53050 kernel: thunderbolt: Fix memory leak in margining
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	dfreiber, drow, jburrell, vkumar
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	---
Doc Text:	A flaw was found in the Thunderbolt module in the Linux kernel. The missing release of memory allocated for the margining for the upstream port of the router can cause a memory leak, potentially impacting system stability and resulting in a denial of service.	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 2025-05-02 16:04:17 UTC

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

thunderbolt: Fix memory leak in margining

Memory for the usb4->margining needs to be relased for the upstream port
of the router as well, even though the debugfs directory gets released
with the router device removal. Fix this.

Comment 1 Avinash Hanwate 2025-05-05 04:47:02 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025050206-CVE-2023-53050-6072@gregkh/T