---
id: "CVE-2026-56916"
page: "https://infrastack.ai/live/CVE-2026-56916"
kind: "vulnerability"
aliases: ["CVE-2026-56916"]
title: "Trusty kernel: race in virtqueue buffer handling allows local privilege escalation"
severity: "unknown"
cvss: null
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: [{"name": "Trusty", "fixed": [], "affected": "", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["android", "infrastructure", "linux-kernel", "trusty"]
not_affected_if: ["no-local-code-execution"]
published_at: "2026-11-10T20:19:15+00:00"
first_seen_at: "2026-11-10T20:46:06+00:00"
updated_at: "2026-11-10T20:53:50+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-56916", "first_seen_at": "2026-11-10T20:46:06+00:00"}]
exploit_sources: []
---

# Trusty kernel: race in virtqueue buffer handling allows local privilege escalation

Link for people: https://infrastack.ai/live/CVE-2026-56916 (this .md is for agents)

A time-of-check/time-of-use race in the Trusty kernel's virtqueue code (trusty/kernel/lib/trusty/vqueue.c) lets a local process read a value twice with different results. The description says this can lead to privilege escalation on the device.

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

## Affected

- vendor:Trusty affected range not listed fixed no fixed version listed

## Timeline

- 2026-11-10T20:46:06+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-56916

## From the sources

In _vqueue_get_avail_buf_locked of trusty/kernel/lib/trusty/vqueue.c, there is a possible Double-read / TOCTOU due to a race condition. This could lead to local escalation of privilege with execution privileges needed. User interaction is for exploitation.

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