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.

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History

Fri, 09 Oct 2026 15:00:00 +0000

Type Values Removed Values Added
Description 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.
Title Code Execution in Host Sentry Process via Double Free in gVisor VFS MemoryFile
Weaknesses CWE-415
CWE-416
References
Metrics cvssV4_0

{'score': 8.5, 'vector': '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'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: Google

Published:

Updated: 2026-10-09T14:44:35.711Z

Reserved: 2026-09-22T14:46:37.727Z

Link: CVE-2026-95702

cve-icon Vulnrichment

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cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-09T15:17:20.447

Modified: 2026-10-09T16:35:35.900

Link: CVE-2026-95702

cve-icon Redhat

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cve-icon OpenCVE Enrichment

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Weaknesses