Severity

High

Vendor

Canonical Ubuntu

Versions Affected

• Canonical Ubuntu 18.04

Description

William Liu and Jamie Hill-Daniel discovered that the file system context functionality in the Linux kernel contained an integer underflow vulnerability, leading to an out-of-bounds write. A local attacker could use this to cause a denial of service (system crash) or execute arbitrary code.

CVEs contained in this USN include: CVE-2022-0185.

Affected Cloud Foundry Products and Versions

Severity is high unless otherwise noted.

• Bionic Stemcells
  • 1.x versions prior to 1.59
  • All other stemcells not listed.

Mitigation

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 1.59 or greater
  • All other stemcells should be upgraded to the latest version available on bosh.io.

References

• USN Notice
• CVE-2022-0185

History

2022-03-11: Initial vulnerability report published.