packages:
  - module: github.com/opencontainers/runc
    package: github.com/opencontainers/runc/libcontainer
    symbols:
      - mountToRootfs
    versions:
      - fixed: v1.0.0-rc9.0.20200122160610-2fc03cc11c77
description: |
    A race while mounting volumes allows a possible symlink-exchange
    attack, allowing a user whom can start multiple containers with
    custom volume mount configurations to escape the container.
published: 2021-04-14T20:04:52Z
cves:
  - CVE-2019-19921
ghsas:
  - GHSA-fh74-hm69-rqjw
credit: Leopold Schabel
links:
    pr: https://github.com/opencontainers/runc/pull/2207
    commit: https://github.com/opencontainers/runc/commit/2fc03cc11c775b7a8b2e48d7ee447cb9bef32ad0
    context:
      - https://github.com/opencontainers/runc/issues/2197