Bug 2464483 (CVE-2026-31760)

Summary:	CVE-2026-31760 kernel: gpib: lpvo_usb: fix memory leak on disconnect
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 Linux kernel's `gpib: lpvo_usb` driver. This memory leak vulnerability occurs when the driver fails to release references to USB devices upon disconnection. A local user with the ability to connect and disconnect USB devices could repeatedly trigger this flaw, leading to resource exhaustion and potentially a Denial of Service (DoS) condition on the system.	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 2026-05-01 15:09:19 UTC

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

gpib: lpvo_usb: fix memory leak on disconnect

The driver iterates over the registered USB interfaces during GPIB
attach and takes a reference to their USB devices until a match is
found. These references are never released which leads to a memory leak
when devices are disconnected.

Fix the leak by dropping the unnecessary references.

Comment 1 Keith Grant 2026-05-01 22:37:29 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026050145-CVE-2026-31760-05cb@gregkh/T