What’s Vulnerable › Vulnerabilities

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

• Severity: high (CVSS 8.5 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-09 · updated 2026-10-15
• Weakness: CWE-415

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 products

• Google gVisor: before 20260831.0 — fixed in 20260831.0

How to fix

Upgrade to a fixed version: Google gVisor 20260831.0. Check the vendor advisory for mitigations.

References

• https://github.com/google/gvisor/commit/25c75149bc0eeaa6a3a49b9bbe3473588b2af6df
• https://github.com/google/gvisor/commit/90bc4fc36fe442257a06ba15df00371561c183ed
• https://github.com/google/gvisor/commit/e4efb89c787ef15b09e68d561f1303380e1d5a77

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