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Vulnerability · Published Oct 9, 2026 · Assigned by Google

CVE-2026-95702Code Execution in Host Sentry Process via Double Free in gVisor VFS MemoryFile

High 8.5

In plain English

A high-severity use-after-free in gVisor from Google. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 0% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)8.5High
Exploit odds (30 days)<0.1%top 99.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12golang-gvisor-gvisorno fix listedDEBIAN-CVE-2026-95702
Debian:13golang-gvisor-gvisorno fix listedDEBIAN-CVE-2026-95702
Debian:14golang-gvisor-gvisor0.0~20261026.0-1DEBIAN-CVE-2026-95702
Ubuntu:24.04:LTSgolang-gvisor-gvisorno fix listedUBUNTU-CVE-2026-95702
Ubuntu:26.04:LTSgolang-gvisor-gvisorno fix listedUBUNTU-CVE-2026-95702
Ubuntu:26.10golang-gvisor-gvisorno fix listedUBUNTU-CVE-2026-95702

Affected products (as reported)

VendorProductVersions
Google gVisor 0 – before 20260831.0

Weakness: CWE-416, CWE-415 · 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

References