USN-5044-1: Linux kernel vulnerabilities
23889
08 December 2021
08 December 2021
CLOSED
MEDIUM
CVE-2021-3564,CVE-2021-3573,CVE-2021-3587
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
- https://people.canonical.com/~ubuntu-security/cve/CVE-2021-3573
- https://people.canonical.com/~ubuntu-security/cve/CVE-2021-3564
- https://people.canonical.com/~ubuntu-security/cve/CVE-2021-3587
- https://ubuntu.com/security/notices/USN-5044-1
History
2021-12-08: Initial vulnerability report published.