Bug 2559778 (CVE-2026-99023)

Summary:	CVE-2026-99023 kernel: power: sequencing: pcie-m2: Fix leaking array from of_regulator_bulk_get_all()
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
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 PCIe M.2 power sequencing driver. The driver fails to release memory allocated for regulator consumer arrays during error handling and device removal. A local attacker could exploit this issue by triggering repeated device probe failures or removal operations, resulting in a memory leak that can cause a Denial of Service (DoS) through system memory exhaustion.	Story Points:	---
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Last Closed:		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 2026-10-23 13:35:19 UTC

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

power: sequencing: pcie-m2: Fix leaking array from of_regulator_bulk_get_all()

of_regulator_bulk_get_all() allocates the consumers array and hands it to
the caller, who is expected to free it at an appropriate time.
pwrseq-pcie-m2.c never did, leading to a memory leak.

Add an explicit kfree() for the consumers array.

Comment 1 gkamathe 2026-10-27 10:31:45 UTC

Upstream advisory:
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-99023.mbox