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Security Advisory

USN-5395-2: networkd-dispatcher regression




Canonical Ubuntu

Versions Affected

  • Canonical Ubuntu 18.04


USN-5395-1 fixed vulnerabilities in networkd-dispatcher. Unfortunately that update was incomplete and could introduce a regression. This update fixes the problem. We apologize for the inconvenience. Original advisory details: It was discovered that networkd-dispatcher incorrectly handled internal scripts. A local attacker could possibly use this issue to cause a race condition, escalate privileges and execute arbitrary code. (CVE-2022-29799, CVE-2022-29800) Update Instructions: Run `sudo ua fix USN-5395-2` to fix the vulnerability. The problem can be corrected by updating your system to the following package versions: networkd-dispatcher – 1.7-0ubuntu3.5 No subscription required

Affected Cloud Foundry Products and Versions

Severity is unknown unless otherwise noted.

  • Bionic Stemcells
    • 1.x versions prior to 1.84
    • All other stemcells not listed.
  • CF Deployment
    • All versions with Bionic Stemcells prior to 1.84


Users of affected products are strongly encouraged to follow the mitigations below. The Cloud Foundry project recommends upgrading the following releases:

  • Bionic Stemcells
    • Upgrade 1.x versions to 1.84 or greater
    • All other stemcells should be upgraded to the latest version available on
  • CF Deployment
    • For all versions, upgrade Bionic Stemcells to 1.84 or greater



2022-05-26: Initial vulnerability report published.

Cloud Foundry Foundation Security Team Profile Image

Cloud Foundry Foundation Security Team, AUTHOR