---
id: CVE-2026-96812
title: >-
  Improper Exposure of Resource to Wrong Sphere in the host file helper (gofer)
  in Google gVisor prior to commit 573a9e73cf844f on Linux platforms with CUSE
  enabled allows a local attacker with container image deployment privileges to
  achi…
summary: >-
  Improper Exposure of Resource to Wrong Sphere in the host file helper (gofer)
  in Google gVisor prior to commit 573a9e73cf844f on Linux platforms with CUSE
  enabled allows a local attacker with container image deployment privileges to
  achi…
severity: high
cvss: 8.8
cvssVector: 'CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H'
cwe:
  - CWE-269
  - CWE-668
vendor: Google
product: gVisor
affected:
  - gVisor < 573a9e73cf844f
published: '2026-09-25'
updated: '2026-09-25'
sourceUpdated: '2026-09-25T17:17:20.543'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-96812'
references:
  - url: 'https://github.com/google/gvisor/commit/573a9e73cf844f'
    label: cve-coordination@google.com
tags:
  - nvd
  - cve.org
cvssSource: cna
ingestedAt: '2026-09-25T15:10:56.363Z'
---

## Overview

Improper Exposure of Resource to Wrong Sphere in the host file helper (gofer) in Google gVisor prior to commit 573a9e73cf844f on Linux platforms with CUSE enabled allows a local attacker with container image deployment privileges to achieve root code execution on the host system. By including a /dev/cuse character device node in a container image, opening the device passes through to the host, allowing the sandboxed attacker to register a host device and exploit CUSE unrestricted ioctl handling to overwrite root udev helper memory.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.