---
id: "CVE-2026-56934"
page: "https://infrastack.ai/live/CVE-2026-56934"
kind: "vulnerability"
aliases: ["CVE-2026-56934"]
title: "Linux kernel ARM IOMMU page table flaw allows local privilege escalation"
severity: "unknown"
cvss: null
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["arm", "infrastructure", "kernel", "linux"]
not_affected_if: []
published_at: "2026-11-10T20:19:15+00:00"
first_seen_at: "2026-11-10T20:46:07+00:00"
updated_at: "2026-11-10T20:53:43+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-56934", "first_seen_at": "2026-11-10T20:46:07+00:00"}]
exploit_sources: []
---

# Linux kernel ARM IOMMU page table flaw allows local privilege escalation

Link for people: https://infrastack.ai/live/CVE-2026-56934 (this .md is for agents)

A logic error in the Arm LPAE IOMMU page table code (arm_lpae_split_blk_unmap) lets a local user with ordinary access escalate privileges. No user interaction is needed to exploit it.

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

## Timeline

- 2026-11-10T20:46:07+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-56934

## From the sources

In arm_lpae_split_blk_unmap of drivers/iommu/io-pgtable-arm-common.c, there is a possible Logic error due to a logic error in the code. This could lead to local escalation of privilege with User 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_