Bug 2552214 (CVE-2026-98412)

Summary:	CVE-2026-98412 kernel: power: sequencing: fix NULL-pointer dereference in pwrseq_unit_new()
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. If a memory allocation failure occurs while setting up dependencies in pwrseq_unit_setup_deps(), error handling cleans up the partially allocated unit without having initialized its internal list. This uninitialized state leads to a NULL pointer dereference during cleanup, causing a kernel crash and resulting in 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 2026-10-14 13:46:32 UTC

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

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

If memory allocation fails in pwrseq_unit_setup_deps(), pwrseq_unit_put()
is called to release the partially initialized unit. However, we've
never initialized unit->list and pwrseq_unit_release() will
unconditionally call list_del() on it. Initialize unit->list right after
allocating the unit struct.

Comment 1 Mauro Matteo Cascella 2026-10-16 10:02:26 UTC

Upstream advisory:
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98412.mbox