Bug 2536470 (CVE-2026-90394)

Summary:	CVE-2026-90394 kernel: power: supply: sc2731_charger: cancel work on remove
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 `sc2731_charger` driver within the Linux kernel. This vulnerability occurs because the driver fails to properly cancel scheduled work during its removal process. When the driver is unregistered, it does not ensure that pending or running tasks are terminated before its allocated memory is released. This can lead to attempts to access freed memory, potentially causing system instability or a denial of service (DoS).	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 18:05:54 UTC

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

power: supply: sc2731_charger: cancel work on remove

The USB notifier and initial charger detection can schedule info->work.
The remove path unregisters the notifier, but does not cancel queued or
running work before the devm-allocated driver data is released.

Set the platform drvdata used by remove, then cancel the work after
unregistering the notifier.

This issue was found by a static analysis tool.

Comment 1 gkamathe 2026-09-21 09:00:47 UTC

Upstream advisory:
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-90394.mbox