CVE-2026-112917
Docker Desktop WSL2 AF_VSOCK isolation bypass via 32-bit socketcall
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.
Fixes and workarounds
Fix
Upgrade to Docker Desktop 4.98.0 or later and WSL 3.0.3 or later. Both are required.
Source: CNA: DockerAffected products and versions
| Product | Versions | Authority |
|---|---|---|
| Docker Desktop Docker Platforms: Windows |
≥ 4.98.0; < * (unaffected, semver)
Other versions: affected |
CNA: Docker |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 9.2 critical |
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 | CNA: Docker |
| 4.0 / 9.2 critical |
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X | NVD: [email protected] |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://docs.docker.com/desktop/release-notes/#4980CNA: Docker · release-notes
- https://github.com/microsoft/WSL/releases/tag/3.0.3CNA: Docker · release-notes
- https://github.com/microsoft/WSL2-Linux-Kernel/releases/tag/linux-msft-wsl-6.18.54.1CNA: Docker · release-notes
- https://docs.docker.com/desktop/release-notes/#4980[email protected]
- https://github.com/microsoft/WSL/releases/tag/3.0.3[email protected]
- https://github.com/microsoft/WSL2-Linux-Kernel/releases/tag/linux-msft-wsl-6.18.54.1[email protected]
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