---
id: "CVE-2026-0178"
page: "https://infrastack.ai/live/CVE-2026-0178"
kind: "vulnerability"
aliases: ["CVE-2026-0178"]
title: "Linux arm64 SMMU driver: stale entries let local code bypass DMA isolation"
severity: "unknown"
cvss: null
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["arm64", "infrastructure", "kernel", "linux", "smmu"]
not_affected_if: ["no-arm-smmu-v3-hardware", "x86-only-hosts"]
published_at: "2026-11-10T20:17:20+00:00"
first_seen_at: "2026-11-10T20:46:00+00:00"
updated_at: "2026-11-10T20:54:13+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-0178", "first_seen_at": "2026-11-10T20:46:00+00:00"}]
exploit_sources: []
---

# Linux arm64 SMMU driver: stale entries let local code bypass DMA isolation

Link for people: https://infrastack.ai/live/CVE-2026-0178 (this .md is for agents)

In the arm-smmu-v3 driver, a logic error leaves stale stream table entries that can bypass direct memory access isolation. A local process with system-level execution privileges can escalate its privileges.

_Summary, check and fix written by a model from the sources; labelled as such._

## Timeline

- 2026-11-10T20:46:00+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-0178

## From the sources

In multiple functions of arm-smmu-v3.c, there is a possible way to bypass direct memory access isolation via stale stream table entries 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.

---

_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_