---
id: CVE-2026-95702
title: >-
  Use-after-free vulnerability in VFS in Google gVisor prior to release
  20260831.0 on all platforms allows a local attacker with standard container
  privileges to achieve code execution in the host sentry process by
  double-freeing the backi…
summary: >-
  Use-after-free vulnerability in VFS in Google gVisor prior to release
  20260831.0 on all platforms allows a local attacker with standard container
  privileges to achieve code execution in the host sentry process by
  double-freeing the backi…
severity: high
cvss: 8.5
cvssVector: 'CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'
cwe:
  - CWE-415
  - CWE-416
  - CWE-825
vendor: Google
product: gVisor
affected:
  - gVisor < 20260831.0
published: '2026-10-09'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T19:17:49.723'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-95702'
references:
  - url: >-
      https://github.com/google/gvisor/commit/25c75149bc0eeaa6a3a49b9bbe3473588b2af6df
    label: cve-coordination@google.com
  - url: >-
      https://github.com/google/gvisor/commit/90bc4fc36fe442257a06ba15df00371561c183ed
    label: cve-coordination@google.com
  - url: >-
      https://github.com/google/gvisor/commit/e4efb89c787ef15b09e68d561f1303380e1d5a77
    label: cve-coordination@google.com
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-95702.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-95702'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2548662'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-95702'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-95702'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-15T18:14:55.174894Z'
cvssSource: cna
epss: 0.00084
epssPercentile: 0.00247
ingestedAt: '2026-10-09T16:02:33.390Z'
scores:
  cna: 8.5
  vendor: 7.8
---

## Overview

Use-after-free vulnerability in VFS in Google gVisor prior to release 20260831.0 on all platforms allows a local attacker with standard container privileges to achieve code execution in the host sentry process by double-freeing the backing MemoryFile from an in-sandbox overlay filesystem. The sentry process remains confined by host-level Linux seccomp and namespace boundaries.

## Remediation

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

## Vendor advisories

- **Red Hat VEX** · Important · updated 2026-10-16 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-95702.json)