CVE-2026-96812 (GCVE-0-2026-96812)

Vulnerability from cvelistv5 – Published: 2026-09-25 14:47 – Updated: 2026-09-25 16:07
VLAI
Title
Host Root Sandbox Escape in gVisor via Character Device Passthrough and CUSE
Summary
Improper Exposure of Resource to Wrong Sphere in the host file helper (gofer) in Google gVisor prior to commit 573a9e73cf844f on Linux platforms with CUSE enabled allows a local attacker with container image deployment privileges to achieve root code execution on the host system. By including a /dev/cuse character device node in a container image, opening the device passes through to the host, allowing the sandboxed attacker to register a host device and exploit CUSE unrestricted ioctl handling to overwrite root udev helper memory.
Severity
8.8 (High)
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-25 16:07 UTC
CWE
  • CWE-668 - Exposure of Resource to Wrong Sphere
  • CWE-269 - Improper Privilege Management
Assigner
References
Impacted products
Vendor Product Version CPE status
Google gVisor Affected: 0 , < 573a9e73cf844f (git)
guessed Create a notification for this product.
Credits
Anthropic (using Claude)
Show details on NVD website
To clipboard 

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