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.
Metrics
Affected Vendors & Products
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Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
| Link | Providers |
|---|---|
| https://github.com/google/gvisor/commit/573a9e73cf844f |
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History
Fri, 25 Sep 2026 15:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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. | |
| Title | Host Root Sandbox Escape in gVisor via Character Device Passthrough and CUSE | |
| Weaknesses | CWE-269 CWE-668 |
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| References |
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| Metrics |
cvssV4_0
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Status: PUBLISHED
Assigner: Google
Published:
Updated: 2026-09-25T16:07:52.560Z
Reserved: 2026-09-23T17:12:31.415Z
Link: CVE-2026-96812
No data.
Status : Awaiting Analysis
Published: 2026-09-25T15:17:57.097
Modified: 2026-09-25T17:17:20.543
Link: CVE-2026-96812
No data.
OpenCVE Enrichment
Updated: 2026-09-25T19:15:11Z