Bug 2513140 (CVE-2026-68091)

Summary:	CVE-2026-68091 kernel: HID: wacom: stop hardware after post-start probe failures
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
Whiteboard:
Fixed In Version:		Doc Type:	---
Doc Text:	A flaw was found in the Linux kernel's HID Wacom driver. When the `wacom_parse_and_register()` function encounters failures after starting the Human Interface Device (HID) hardware, its error handling path releases Wacom resources without properly stopping the HID hardware. This improper resource management could lead to system instability or a denial of service (DoS) condition.	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 2026-08-10 12:02:25 UTC

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

HID: wacom: stop hardware after post-start probe failures

wacom_parse_and_register() starts HID hardware before registering inputs
and initializing pad LEDs/remotes. Those later steps can fail, but their
error paths currently release Wacom resources without stopping the HID
hardware.

Route post-hid_hw_start() failures through hid_hw_stop() before
releasing driver resources.

This issue was identified during our ongoing static-analysis research while
reviewing kernel code.

Comment 1 gkamathe 2026-08-11 10:28:10 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026081000-CVE-2026-68091-6146@gregkh/T