Bug 2514456 (CVE-2026-68443)

Summary:	CVE-2026-68443 kernel: hwmon: (gigabyte_waterforce) Stop device IO before calling hid_hw_stop
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:	akhatavk, aos-team-art-private, asdas, dpaolell, jdelft, jupierce, lgarciaa, mbiarnes, ppalepu, ppostler, prdhamdh, rhel-process-autobot, sghai, sidsharm, suppawar, vlaad, 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 `gigabyte_waterforce` hwmon driver. A race condition exists because `hid_hw_stop()` does not properly stop device I/O. This can occur during a driver probe failure after I/O has been initiated, leading to a Use-After-Free (UAF) vulnerability. An attacker could potentially exploit this to achieve arbitrary code execution or cause a denial of service.	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 2026-08-12 00:22:35 UTC

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

hwmon: (gigabyte_waterforce) Stop device IO before calling hid_hw_stop

Calling hid_hw_stop() does not stop the device IO.
This results in a race condition between hid_input_report() and the point
immediately following the execution of hid_device_io_start() within
the driver probe function. If the probe operation fails after "io start"
has been initiated, this race condition will result in a UAF vulnerability.

Fix the problem by calling hid_device_io_stop() before calling
hid_hw_stop().

Comment 1 gkamathe 2026-08-12 05:01:39 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026081257-CVE-2026-68443-1fc8@gregkh/T