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High, CVSS 7.5

Incorrect Authorization in runc

CVE-2019-16884GHSA-fgv8-vj5c-2ppq

What to do

Vendor fix available. Upgrade each affected package to the fixed version on its release line (github.com/opencontainers/runc 1.0.0-rc8.0.20190930145003-cad42f6e0932; github.com/opencontainers/selinux 1.3.1-0.20190929122143-5215b1806f52), redeploy, then verify what is actually installed.

This page has no inventory attached, so it cannot say whether you are affected. A vendor fix is not proof that your deployment is fixed.

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Affected packages

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS
7.5 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
EPSS
  • CVE-2019-16884: 4.41% estimated exploitation activity in the next 30 days; percentile 91.35 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.
Source description

As published by the source; long descriptions are shortened.

runc through 1.0.0-rc8, as used in Docker through 19.03.2-ce and other products, allows AppArmor restriction bypass because libcontainer/rootfslinux.go incorrectly checks mount targets, and thus a malicious Docker image can mount over a /proc directory.

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 1 · created ·

    Published from ghsa record GHSA-fgv8-vj5c-2ppq

Agent brief

Preview the exact text before you copy it. Commands are read-only suggestions; review them before running anything.

# Patch Next advisory brief: CVE-2019-16884

Advisory: Incorrect Authorization in runc
IDs: CVE-2019-16884, GHSA-fgv8-vj5c-2ppq
Record: https://patchnext.com/advisories/cve-2019-16884 (revision 1, source checked 26 Oct 2026, 15:04 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: High (CVSS 7.5)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: github.com/opencontainers/runc 1.0.0-rc8.0.20190930145003-cad42f6e0932; github.com/opencontainers/selinux 1.3.1-0.20190929122143-5215b1806f52. A vendor fix does not mean a deployment is fixed.

## Affected components
- Go github.com/opencontainers/runc: affected < 1.0.0-rc8.0.20190930145003-cad42f6e0932; fixed in 1.0.0-rc8.0.20190930145003-cad42f6e0932
- Go github.com/opencontainers/selinux: affected < 1.3.1-0.20190929122143-5215b1806f52; fixed in 1.3.1-0.20190929122143-5215b1806f52

## Suggested inspection (read-only)
- Go github.com/opencontainers/runc: check the installed version with your package manager.
- Go github.com/opencontainers/selinux: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on github.com/opencontainers/runc, github.com/opencontainers/selinux.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-fgv8-vj5c-2ppq (GitHub-reviewed advisory GHSA-fgv8-vj5c-2ppq lists affected ranges: Go github.com/opencontainers/runc >=0 =0 <1.3.1-0.20190929122143-5215b1806f52)

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