CWE
416 362
Advisory Published

USN-5413-1: Linux kernel vulnerabilities

First published: Thu May 12 2022(Updated: )

Jeremy Cline discovered a use-after-free in the nouveau graphics driver of the Linux kernel during device removal. A privileged or physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2020-27820) It was discovered that a race condition existed in the network scheduling subsystem of the Linux kernel, 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-2021-39713) It was discovered that the Parallel NFS (pNFS) implementation in the Linux kernel did not properly perform bounds checking in some situations. An attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-4157) It was discovered that the ST21NFCA NFC driver in the Linux kernel did not properly validate the size of certain data in EVT_TRANSACTION events. A physically proximate attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-26490) It was discovered that the Xilinx USB2 device gadget driver in the Linux kernel did not properly validate endpoint indices from the host. A physically proximate attacker could possibly use this to cause a denial of service (system crash). (CVE-2022-27223) It was discovered that the EMS CAN/USB interface implementation in the Linux kernel contained a double-free vulnerability when handling certain error conditions. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2022-28390)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/linux-image-virtual<4.4.0.224.231
4.4.0.224.231
=16.04
All of
ubuntu/linux-image-generic<4.4.0.224.231
4.4.0.224.231
=16.04
All of
ubuntu/linux-image-aws<4.4.0.1140.145
4.4.0.1140.145
=16.04
All of
ubuntu/linux-image-4.4.0-224-lowlatency<4.4.0-224.257
4.4.0-224.257
=16.04
All of
ubuntu/linux-image-4.4.0-1105-kvm<4.4.0-1105.114
4.4.0-1105.114
=16.04
All of
ubuntu/linux-image-4.4.0-1140-aws<4.4.0-1140.154
4.4.0-1140.154
=16.04
All of
ubuntu/linux-image-kvm<4.4.0.1105.103
4.4.0.1105.103
=16.04
All of
ubuntu/linux-image-4.4.0-224-generic<4.4.0-224.257
4.4.0-224.257
=16.04
All of
ubuntu/linux-image-lowlatency<4.4.0.224.231
4.4.0.224.231
=16.04
All of
ubuntu/linux-image-generic-lts-xenial<4.4.0.224.195
4.4.0.224.195
=14.04
All of
ubuntu/linux-image-4.4.0-224-generic<4.4.0-224.257~14.04.1
4.4.0-224.257~14.04.1
=14.04
All of
ubuntu/linux-image-lowlatency-lts-xenial<4.4.0.224.195
4.4.0.224.195
=14.04
All of
ubuntu/linux-image-4.4.0-224-lowlatency<4.4.0-224.257~14.04.1
4.4.0-224.257~14.04.1
=14.04
All of
ubuntu/linux-image-virtual-lts-xenial<4.4.0.224.195
4.4.0.224.195
=14.04

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the vulnerability ID for this Linux kernel vulnerability?

    The vulnerability ID for this Linux kernel vulnerability is CVE-2020-27820.

  • What is the impact of CVE-2020-27820?

    CVE-2020-27820 can be used by a privileged or physically proximate attacker to cause a denial of service (system crash).

  • Which version of the Linux kernel is affected by this vulnerability?

    The Linux kernel versions 4.4.0.224.231 and earlier are affected by this vulnerability.

  • How can I fix CVE-2020-27820?

    To fix CVE-2020-27820, update the Linux kernel to version 4.4.0.224.231 or later.

  • Where can I find more information about this vulnerability?

    More information about this vulnerability can be found at the following references: [CVE-2020-27820](https://ubuntu.com/security/CVE-2021-4157), [CVE-2022-26490](https://ubuntu.com/security/CVE-2022-26490), [CVE-2022-28390](https://ubuntu.com/security/CVE-2022-28390).

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