All Vulnerability Reports

USN-5044-1: Linux kernel vulnerabilities


Severity

Medium

Vendor

VMware Tanzu

Versions Affected

  • Canonical Ubuntu 16.04

Description

It was discovered that the bluetooth subsystem in the Linux kernel did not properly handle HCI device initialization failure, leading to a double-free vulnerability. An attacker could use this to cause a denial of service or possibly execute arbitrary code. (CVE-2021-3564)

It was discovered that the bluetooth subsystem in the Linux kernel did not properly handle HCI device detach events, leading to a use-after-free vulnerability. An attacker could use this to cause a denial of service or possibly execute arbitrary code. (CVE-2021-3573)

It was discovered that the NFC implementation in the Linux kernel did not properly handle failed connect events leading to a NULL pointer dereference. A local attacker could use this to cause a denial of service. (CVE-2021-3587)

CVEs contained in this USN include: CVE-2021-3573, CVE-2021-3564, CVE-2021-3587

Affected VMware Products and Versions

Severity is medium unless otherwise noted.

  • Isolation Segment
    • 2.7.x versions with Xenial Stemcells prior to 456.176
    • 2.8.x versions with Xenial Stemcells prior to 621.141
    • 2.9.x versions with Xenial Stemcells prior to 621.141
    • 2.10.x versions with Xenial Stemcells prior to 621.141
    • 2.11.x versions with Xenial Stemcells prior to 621.141
  • Operations Manager
    • 2.9.x versions prior to 2.9.21
    • 2.10.x versions prior to 2.10.17
  • VMware Tanzu Application Service for VMs
    • 2.7.x versions with Xenial Stemcells prior to 456.176
    • 2.8.x versions with Xenial Stemcells prior to 621.141
    • 2.9.x versions with Xenial Stemcells prior to 621.141
    • 2.10.x versions with Xenial Stemcells prior to 621.141
    • 2.11.x versions with Xenial Stemcells prior to 621.141
    • 2.12.x versions with Xenial Stemcells prior to 621.141

Mitigation

Users of affected products are strongly encouraged to follow the mitigation below. On the Tanzu Network product page for each release, check the Depends On section and/or Release Notes for this information. Releases that have fixed this issue include:

  • Isolation Segment
    • 2.7.x: Upgrade Xenial Stemcells to 456.176 or greater
    • 2.8.x: Upgrade Xenial Stemcells to 621.141 or greater
    • 2.9.x: Upgrade Xenial Stemcells to 621.141 or greater
    • 2.10.x: Upgrade Xenial Stemcells to 621.141 or greater
    • 2.11.x: Upgrade Xenial Stemcells to 621.141 or greater
  • Operations Manager
    • 2.9.21
    • 2.10.17
  • VMware Tanzu Application Service for VMs
    • 2.7.x: Upgrade Xenial Stemcells to 456.176 or greater
    • 2.8.x: Upgrade Xenial Stemcells to 621.141 or greater
    • 2.9.x: Upgrade Xenial Stemcells to 621.141 or greater
    • 2.10.x: Upgrade Xenial Stemcells to 621.141 or greater
    • 2.11.x: Upgrade Xenial Stemcells to 621.141 or greater
    • 2.12.x: Upgrade Xenial Stemcells to 621.141 or greater

References

History

2021-12-08: Initial vulnerability report published.