USN-4489-1: Linux kernel vulnerability
Severity
High
Vendor
Canonical Ubuntu
Versions Affected
- Canonical Ubuntu 16.04
Description
Or Cohen discovered that the AF_PACKET implementation in the Linux kernel did not properly perform bounds checking in some situations. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code.
CVEs contained in this USN include: CVE-2020-14386.
Affected Cloud Foundry Products and Versions
Severity is high unless otherwise noted.
- Xenial Stemcells
- 250.x versions prior to 250.206
- 315.x versions prior to 315.193
- 456.x versions prior to 456.120
- 621.x versions prior to 621.84
- 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:
- Xenial Stemcells
- Upgrade 250.x versions to 250.206 or greater
- Upgrade 315.x versions to 315.193 or greater
- Upgrade 456.x versions to 456.120 or greater
- Upgrade 621.x versions to 621.84 or greater
- All other stemcells should be upgraded to the latest version available on bosh.io.
References
History
2020-09-24: Initial vulnerability report published.
