USN-5299-1: Linux kernel vulnerabilities

23733

12 May 2022

12 May 2022

CLOSED

MEDIUM

CVE-2020-26147,CVE-2020-26558,CVE-2021-0129,CVE-2021-28972,CVE-2021-33034,CVE-2021-34693,CVE-2021-3483,CVE-2021-3564,CVE-2021-3612,CVE-2021-3679,CVE-2021-38204,CVE-2021-42008,CVE-2021-45485

Severity

medium

Vendor

VMware Tanzu

Versions Affected

  • Canonical Ubuntu 16.04

Description

Mathy Vanhoef discovered that the Linux kernel’s WiFi implementation could reassemble mixed encrypted and plaintext fragments. A physically proximate attacker could possibly use this issue to inject packets or exfiltrate selected fragments. (CVE-2020-26147) It was discovered that the bluetooth subsystem in the Linux kernel did not properly perform access control. An authenticated attacker could possibly use this to expose sensitive information. (CVE-2020-26558, CVE-2021-0129) It was discovered that the RPA PCI Hotplug driver implementation in the Linux kernel did not properly handle device name writes via sysfs, leading to a buffer overflow. A privileged attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-28972) It was discovered that a use-after-free existed in the Bluetooth HCI driver of the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-33034) Norbert Slusarek discovered that the CAN broadcast manger (bcm) protocol implementation in the Linux kernel did not properly initialize memory in some situations. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2021-34693) 马哲宇 discovered that the IEEE 1394 (Firewire) nosy packet sniffer driver in the Linux kernel did not properly perform reference counting in some situations, 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-2021-3483) 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) Murray McAllister discovered that the joystick device interface in the Linux kernel did not properly validate data passed via an ioctl(). A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code on systems with a joystick device registered. (CVE-2021-3612) It was discovered that the tracing subsystem in the Linux kernel did not properly keep track of per-cpu ring buffer state. A privileged attacker could use this to cause a denial of service. (CVE-2021-3679) It was discovered that the MAX-3421 host USB device driver in the Linux kernel did not properly handle device removal events. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2021-38204) It was discovered that the 6pack network protocol driver in the Linux kernel did not properly perform validation checks. A privileged attacker could use this to cause a denial of service (system crash) or execute arbitrary code. (CVE-2021-42008) Amit Klein discovered that the IPv6 implementation in the Linux kernel could disclose internal state in some situations. An attacker could possibly use this to expose sensitive information. (CVE-2021-45485)

CVEs contained in this USN include: CVE-2021-28972, CVE-2021-3483, CVE-2020-26558, CVE-2021-33034, CVE-2020-26147, CVE-2021-0129, CVE-2021-3564, CVE-2021-34693, CVE-2021-3612, CVE-2021-3679, CVE-2021-38204, CVE-2021-42008, CVE-2021-45485

Affected VMware Products and Versions

Severity is medium unless otherwise noted.

  • Tanzu Greenplum for Kubernetes
    • All versions prior to 2.0.0
  • Isolation Segment
    • 2.7.x versions with Xenial Stemcells prior to 456.244
    • 2.8.x versions with Xenial Stemcells prior to 621.216
    • 2.9.x versions with Xenial Stemcells prior to 621.216
    • 2.10.x versions with Xenial Stemcells prior to 621.216
    • 2.11.x versions with Xenial Stemcells prior to 621.216
    • 2.12.x 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 with Xenial Stemcells prior to 456.244
    • 2.8.x versions with Xenial Stemcells prior to 621.216
    • 2.9.x versions with Xenial Stemcells prior to 621.216
    • 2.10.x versions with Xenial Stemcells prior to 621.216
    • 2.11.x versions with Xenial Stemcells prior to 621.216
    • 2.12.x 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:
  • Tanzu Greenplum for Kubernetes
    • 2.0.0
  • Isolation Segment
    • 2.7.x: Upgrade Xenial Stemcells to 456.244 or greater
    • 2.8.x: Upgrade Xenial Stemcells to 621.216 or greater
    • 2.9.x: Upgrade Xenial Stemcells to 621.216 or greater
    • 2.10.x: Upgrade Xenial Stemcells to 621.216 or greater
    • 2.11.x: Upgrade Xenial Stemcells to 621.216 or greater
    • 2.12.x: Upgrade Xenial Stemcells to 621.216 or greater
  • Operations Manager
    • 2.9.34
    • 2.10.34
  • VMware Tanzu Application Service for VMs
    • 2.7.x: Upgrade Xenial Stemcells to 456.244 or greater
    • 2.8.x: Upgrade Xenial Stemcells to 621.216 or greater
    • 2.9.x: Upgrade Xenial Stemcells to 621.216 or greater
    • 2.10.x: Upgrade Xenial Stemcells to 621.216 or greater
    • 2.11.x: Upgrade Xenial Stemcells to 621.216 or greater
    • 2.12.x: Upgrade Xenial Stemcells to 621.216 or greater

References

History

2022-05-12: Initial vulnerability report published.