Bug 2552221 (CVE-2026-98411)

Summary:	CVE-2026-98411 kernel: power: sequencing: fix NULL-pointer dereference in pwrseq_device_register()
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 power sequencing subsystem. When device registration encounters a naming failure, the error-handling path attempts to clean up data structures before they are initialized. This issue leads to an invalid pointer dereference, which can cause the kernel to crash and result in a Denial of Service (DoS).	Story Points:	---
Clone Of:		Environment:
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Regression:	---	Mount Type:	---
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Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2026-10-14 13:50:19 UTC

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

power: sequencing: fix NULL-pointer dereference in pwrseq_device_register()

If dev_set_name() fails in pwrseq_device_register(), we jump to the
err_put_pwrseq label before initializing pwrseq->targets.
pwrseq_release() will try to iterate over targets unconditionally and
subsequently dereference an invalid pointer. Move the call to
dev_set_name() after the list head is initialized.

Comment 1 Mauro Matteo Cascella 2026-10-16 09:52:46 UTC

Upstream advisory:
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98411.mbox