CVE-2026-95702

high

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.

References

https://github.com/google/gvisor/commit/e4efb89c787ef15b09e68d561f1303380e1d5a77

https://github.com/google/gvisor/commit/90bc4fc36fe442257a06ba15df00371561c183ed

https://github.com/google/gvisor/commit/25c75149bc0eeaa6a3a49b9bbe3473588b2af6df

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-95816

Details

Source: Mitre, NVD

Published: 2026-10-09

Updated: 2026-10-09

Risk Information

CVSS v2

Base Score: 4.6

Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:P/A:P

Severity: Medium

CVSS v3

Base Score: 7.8

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Severity: High

CVSS v4

Base 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

Severity: High