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Fencer Vulns
high 8.5

CVE-2026-95702 json

Code Execution in Host Sentry Process via Double Free in gVisor VFS MemoryFile

published 2026-10-09 30 d ago modified 2026-10-15 24 d ago also EUVD-2026-95816

cvss
8.5
version 4.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.1%
EPSS 0.1% chance of exploitation in 30 days, percentile 0%
public exploits
0
none known

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 backing MemoryFile from an in-sandbox overlay filesystem. The sentry process remains confined by host-level Linux seccomp and namespace boundaries.

Patch / fix

  • Google gVisor 20260831.0
  • golang-gvisor-gvisor Debian 14 0.0~20261026.0-1

debian advisories DEBIAN-CVE-2026-95702

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-95702 updated cvss 7.8

gvisor.dev/gvisor: gVisor: Arbitrary code execution via use-after-free in VFS

  • Red Hat Enterprise Linux 8 podman, podman-tests, podman-docker, podman-remote, podman-gvproxy, podman-plugins, +2 more
    not affected: vulnerable code not in execute path
  • Red Hat Enterprise Linux 9 podman, podman-tests, podman-docker, podman-remote, podman-gvproxy, podman-plugins, +4 more Red Hat Enterprise Linux 10 gvisor-tap-vsock 0.8.7-1.el10
    not affected: component not present
  • Red Hat OpenShift Container Platform 4 podman, podman-tests, podman-docker, podman-remote, podman-gvproxy, podman-plugins, +2 more
    not affected: vulnerable code not in execute path

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
24 d ago

Exploit prediction

0.08% chance of exploitation in the next 30 days, higher than 0% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 4.0 8.5 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
CNA 4.0 8.5 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected products

  • Google gVisor

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.