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9.2 Critical

CVE-2026-112917 Docker Desktop WSL2 AF_VSOCK isolation bypass via 32-bit socketcall

Description

In Docker Desktop for Windows with the WSL2 backend, an unprivileged Linux container can use 32-bit socketcall to bypass the default seccomp restriction on AF_VSOCK. This can expose host-facing services and Windows files accessible to the logged-in user. The issue affects x86-64 WSL2; LinuxKit-based backends are unaffected. The issue is fully fixed only with Docker Desktop 4.98.0 or later and WSL 3.0.3 or later. Docker Desktop 4.98.0 or later running on an older WSL remains affected.

CVSS 4.0 detail

Vector CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N

Exploitable with local access to the machine, with an ordinary account and without any user action; an attacker can seriously compromise confidentiality, integrity or availability.

Attack vector
Local
Attack complexity
Low
Attack requirements
None
Privileges required
Low
Interaction
None
Confidentiality
High
Integrity
High
Availability
None
Confidentiality of other systems
High
Integrity of other systems
High
Availability of other systems
None

Affected products and versions

Product Affected versions Fixed in
Docker Desktop 4.98 earliest → < 4.98.0 4.98.0

References

Timeline

  1. Published
  2. Last modified

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