CVE-2026-56946

Not scored yetLast modified Nov 13, 2026

Description

In smmu_unmap_visit_leaf of arm-smmu-v3.c, there is a possible way to release active direct memory access page references during unmapping due to a logic error. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.

Metrics

No CVSS score has been published yet.

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

No affected versions have been published.

Timeline

Published
Nov 10, 2026
Last modified
Nov 13, 2026
NVD status
Awaiting Analysis

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CVE-2026-56946: Unscored | Vulnix