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USN-4144-1: Linux kernel vulnerabilities | Cloud Foundry

Description

# ## 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](<https://bosh.io/stemcells/#ubuntu-xenial>). ## References * [USN-4144-1](<https://usn.ubuntu.com/4144-1>) * [CVE-2018-20976](<https://people.canonical.com/~ubuntu-security/cve/CVE-2018-20976>) * [CVE-2019-15538](<https://people.canonical.com/~ubuntu-security/cve/CVE-2019-15538>)


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