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fix(security): warn when Landlock may silently degrade #868

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Merged
ericksoa merged 3 commits into from
Apr 11, 2026
Merged

fix(security): warn when Landlock may silently degrade #868

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3d2d2bf
fix(security): warn when Landlock may silently degrade
fdzdev Mar 31, 2026
854a046
Merge branch 'main' into fix/landlock-degradation-warn
cv Apr 3, 2026
692cb97
Merge remote-tracking branch 'origin/main' into fix/landlock-degradat…
Apr 11, 2026
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27 changes: 27 additions & 0 deletions src/lib/onboard.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -2687,6 +2687,33 @@ async function createSandbox(
}

console.log(` ✓ Sandbox '${sandboxName}' created`);

try {
if (process.platform === "darwin") {
const vmKernel = runCapture("docker info --format '{{.KernelVersion}}'", { ignoreError: true }).trim();
if (vmKernel) {
const parts = vmKernel.split(".");
const major = parseInt(parts[0], 10);
const minor = parseInt(parts[1], 10);
if (!isNaN(major) && !isNaN(minor) && (major < 5 || (major === 5 && minor < 13))) {
console.warn(` ⚠ Landlock: Docker VM kernel ${vmKernel} does not support Landlock (requires ≥5.13).`);
console.warn(" Sandbox filesystem restrictions will silently degrade (best_effort mode).");
}
}
} else if (process.platform === "linux") {
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const uname = runCapture("uname -r", { ignoreError: true }).trim();
if (uname) {
const parts = uname.split(".");
const major = parseInt(parts[0], 10);
const minor = parseInt(parts[1], 10);
if (!isNaN(major) && !isNaN(minor) && (major < 5 || (major === 5 && minor < 13))) {
console.warn(` ⚠ Landlock: Kernel ${uname} does not support Landlock (requires ≥5.13).`);
console.warn(" Sandbox filesystem restrictions will silently degrade (best_effort mode).");
}
}
}
} catch {}

return sandboxName;
}

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