Bug 2536664 (CVE-2026-90331)

Summary:	CVE-2026-90331 kernel: HID: asus: refactor the two workqueues and init sequence
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:	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 hid-asus driver. This vulnerability involves multiple issues, including an unchecked size in a function handling raw events and a potential use-after-free condition during device probing. These flaws could allow a local attacker to trigger memory corruption, leading to a denial of service or potentially escalating their privileges 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 2026-09-17 19:03:27 UTC

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

HID: asus: refactor the two workqueues and init sequence

Multiple issues have been found within the hid-asus driver:
- unchecked size in asus_raw_event()
- unclean teardown of asus_probe on failure
- possible use-after-free in asus_probe
- multiple workqueue used for jobs where one was enough
- sleeping calls in atomic context
- packets of incorrect size being sent to the keyboard controller

Join the two workqueues into one reusing the stopping mechanism
of the brightness workqueue, use the joined workqueue to also
move the asus_wmi_send_event() sleeping call away from atomic
context and add a size check in asus_raw_event().

Comment 1 gkamathe 2026-09-23 11:25:20 UTC

Upstream advisory:
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-90331.mbox