USN-4144-1: Linux kernel vulnerabilities
Severity
Medium
Vendor
Canonical Ubuntu
Versions Affected
- Canonical Ubuntu 16.04
Description
It was discovered that the XFS file system in the Linux kernel did not properly handle mount failures in some situations. A local attacker could possibly use this to cause a denial of service (system crash) or execute arbitrary code. (CVE-2018-20976)
Benjamin Moody discovered that the XFS file system in the Linux kernel did not properly handle an error condition when out of disk quota. A local attacker could possibly use this to cause a denial of service. (CVE-2019-15538)
CVEs contained in this USN include: CVE-2018-20976, CVE-2019-15538
Affected Cloud Foundry Products and Versions
Severity is medium unless otherwise noted.
- Cloud Foundry BOSH xenial-stemcells are vulnerable, including:
- 456.x versions prior to 456.30
- 315.x versions prior to 315.103
- 250.x versions prior to 250.116
- 170.x versions prior to 170.140
- 97.x versions prior to 97.163
- All other stemcells not listed.
Mitigation
Users of affected products are strongly encouraged to follow one of the mitigations below:
- The Cloud Foundry project recommends upgrading the following BOSH xenial-stemcells:
- Upgrade 456.x versions to 456.30
- Upgrade 315.x versions to 315.103
- Upgrade 250.x versions to 250.116
- Upgrade 170.x versions to 170.140
- Upgrade 97.x versions to 97.163
- All other stemcells should be upgraded to the latest version available on bosh.io.
