Read the docs
TI-2026-70080 Aliases CVE-2026-95702

Double free in gVisor VFS lets local users run code in host sentry

Priority LOW 37CWE-415Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-415 and the CVSS impact.

Summary

Google gVisor before 20260831.0 is affected on all platforms. A double free of the backing MemoryFile from an in-sandbox overlay filesystem (CWE-415) lets a local attacker with standard container privileges achieve code execution in the host sentry process. The sentry process remains confined by host-level Linux seccomp and namespace boundaries.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00084 0th percentileScored 2026-11-07
Fix Fixed gVisor (Google): 20260831.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
GooglegVisorbefore 20260831.020260831.0Patch availableCNA
  • gVisor VendorGoogle Affected before 20260831.0 Fixed in 20260831.0 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:google:gvisor:*:*:*:*:*:*:*:*——Google
  • cpe:2.3:a:google:gvisor:*:*:*:*:*:*:*:* Versions — — ·Google

Remediation

Update Google gVisor to release 20260831.0, which fixes this flaw.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

  • Fix · CNA gVisor (Google) Fixed in 20260831.0

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

Not affected: 4 products
  • Red Hat Enterprise Linux 10
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9
  • Red Hat OpenShift Container Platform 4

Timeline

  1. 2026-10-09 Threatist record created from CVE-2026-95702
  2. 2026-10-11 Priority changed: MEDIUM → LOW
  3. 2026-10-12 Affected versions changed · Red Hat
  4. 2026-10-12 CVSS score added · Red Hat
  5. 2026-10-13 Affected versions changed · Red Hat
  6. 2026-10-16 CISA SSVC decision points changed
  7. 2026-10-16 Affected versions changed · Red Hat

References

Other 3

  • TI-2025-09686 Type confusion in Google Chrome KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-07390 Type confusion in Google Chrome KEVCVSS 3.1CRITICAL 9.6
  • TI-2024-04898 Type confusion in Google Chrome KEVCVSS 3.1CRITICAL 9.6
  • TI-2024-04600 Type confusion in Google Chrome KEVCVSS 3.1CRITICAL 9.6
  • TI-2024-04346 Use after free in Google Chrome KEVCVSS 3.1CRITICAL 9.6
  • TI-2023-05824 Integer overflow in Google Chrome KEVCVSS 3.1CRITICAL 9.6
See all 17247 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences