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USN-5298-1: Linux kernel vulnerabilities

Severity

Medium

Vendor

VMware Tanzu

Versions Affected

• Canonical Ubuntu 16.04
• Canonical Ubuntu 18.04

Description

It was discovered that the Packet network protocol implementation in the Linux kernel contained a double-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-22600) Jürgen Groß discovered that the Xen subsystem within the Linux kernel did not adequately limit the number of events driver domains (unprivileged PV backends) could send to other guest VMs. An attacker in a driver domain could use this to cause a denial of service in other guest VMs. (CVE-2021-28711, CVE-2021-28712, CVE-2021-28713) Jürgen Groß discovered that the Xen network backend driver in the Linux kernel did not adequately limit the amount of queued packets when a guest did not process them. An attacker in a guest VM can use this to cause a denial of service (excessive kernel memory consumption) in the network backend domain. (CVE-2021-28714, CVE-2021-28715) Szymon Heidrich discovered that the USB Gadget subsystem in the Linux kernel did not properly restrict the size of control requests for certain gadget types, leading to possible out of bounds reads or writes. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-39685) Jann Horn discovered a race condition in the Unix domain socket implementation in the Linux kernel that could result in a read-after-free. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-4083) Kirill Tkhai discovered that the XFS file system implementation in the Linux kernel did not calculate size correctly when pre-allocating space in some situations. A local attacker could use this to expose sensitive information. (CVE-2021-4155) Lin Ma discovered that the NFC Controller Interface (NCI) implementation in the Linux kernel contained a race condition, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-4202) Sushma Venkatesh Reddy discovered that the Intel i915 graphics driver in the Linux kernel did not perform a GPU TLB flush in some situations. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. (CVE-2022-0330) It was discovered that the VMware Virtual GPU driver in the Linux kernel did not properly handle certain failure conditions, leading to a stale entry in the file descriptor table. A local attacker could use this to expose sensitive information or possibly gain administrative privileges. (CVE-2022-22942)

CVEs contained in this USN include: CVE-2021-22600, CVE-2021-28713, CVE-2021-28714, CVE-2021-28715, CVE-2021-39685, CVE-2021-4083, CVE-2021-4155, CVE-2022-0330, CVE-2022-22942, CVE-2021-4202, CVE-2021-28711, CVE-2021-28712

Affected VMware Products and Versions

Severity is medium unless otherwise noted.

• Platform Automation Toolkit
  • 4.0.x versions prior to 4.0.13
  • 4.1.x versions prior to 4.1.13
  • 4.2.x versions prior to 4.2.8
  • 4.3.x versions prior to 4.3.5

• Isolation Segment
  • 2.7.x versions prior to 2.7.42, or later versions with Xenial Stemcells prior to 456.244
  • 2.10.x versions prior to 2.10.22, or later versions with Xenial Stemcells prior to 621.216
  • 2.11.x versions prior to 2.11.11, or later versions with Xenial Stemcells prior to 621.216
  • 2.12.x versions prior to 2.12.5, or later versions with Xenial Stemcells prior to 621.216

• Operations Manager
  • 2.9.x versions prior to 2.9.34
  • 2.10.x versions prior to 2.10.34

• VMware Tanzu Application Service for VMs
  • 2.7.x versions prior to 2.7.47, or later versions with Xenial Stemcells prior to 456.244
  • 2.10.x versions prior to 2.10.27, or later versions with Xenial Stemcells prior to 621.216
  • 2.11.x versions prior to 2.11.15, or later versions with Xenial Stemcells prior to 621.216
  • 2.12.x versions prior to 2.12.8, or later versions with Xenial Stemcells prior to 621.216

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:

• Platform Automation Toolkit
  • 4.0.13
  • 4.1.13
  • 4.2.8
  • 4.3.5

• Isolation Segment
  • 2.7.42, and upgrade Xenial Stemcells to 456.244 or greater
  • 2.10.22, and upgrade Xenial Stemcells to 621.216 or greater
  • 2.11.11, and upgrade Xenial Stemcells to 621.216 or greater
  • 2.12.5, and upgrade Xenial Stemcells to 621.216 or greater

• Operations Manager
  • 2.9.34
  • 2.10.34

• VMware Tanzu Application Service for VMs
  • 2.7.47, and upgrade Xenial Stemcells to 456.244 or greater
  • 2.10.27, and upgrade Xenial Stemcells to 621.216 or greater
  • 2.11.15, and upgrade Xenial Stemcells to 621.216 or greater
  • 2.12.8, and upgrade Xenial Stemcells to 621.216 or greater

References

• https://ubuntu.com/security/CVE-2021-22600
• https://ubuntu.com/security/CVE-2021-28713
• https://ubuntu.com/security/CVE-2021-28714
• https://ubuntu.com/security/CVE-2021-28715
• https://ubuntu.com/security/CVE-2021-39685
• https://ubuntu.com/security/CVE-2021-4083
• https://ubuntu.com/security/CVE-2021-4155
• https://ubuntu.com/security/CVE-2022-0330
• https://ubuntu.com/security/CVE-2022-22942
• https://ubuntu.com/security/CVE-2021-4202
• https://ubuntu.com/security/CVE-2021-28711
• https://ubuntu.com/security/CVE-2021-28712
• https://ubuntu.com/security/notices/USN-5298-1
• https://cloudfoundry.org/blog/usn-5298-1

History

2022-05-12: Initial vulnerability report published.