Bug 2536765 (CVE-2026-93133)

Summary:	CVE-2026-93133 kernel: ACPI: RISC-V: Check acpi_get_handle() status in riscv_acpi_add_prt_dep()
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
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. In the `riscv_acpi_add_prt_dep()` function, the `acpi_get_handle()` call can fail, leading to the `link_handle` variable being uninitialized. This oversight could potentially lead to system instability or unexpected behavior.	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 19:29:27 UTC

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

ACPI: RISC-V: Check acpi_get_handle() status in riscv_acpi_add_prt_dep()

In riscv_acpi_add_prt_dep(), the acpi_get_handle() call can fail which
would leave link_handle uninitialized.

Fix it by checking the acpi_get_handle() return status and skip the entry
if it fails.

Comment 1 gkamathe 2026-09-18 18:01:10 UTC

Upstream advisory:
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-93133.mbox