CWE
119 416 362
Advisory Published

USN-5361-1: Linux kernel vulnerabilities

First published: Fri Apr 01 2022(Updated: )

It was discovered that the VFIO PCI driver in the Linux kernel did not properly handle attempts to access disabled memory spaces. A local attacker could use this to cause a denial of service (system crash). (CVE-2020-12888) Mathy Vanhoef discovered that the Linux kernel’s WiFi implementation did not properly verify certain fragmented frames. A physically proximate attacker could possibly use this issue to inject or decrypt packets. (CVE-2020-26141) Mathy Vanhoef discovered that the Linux kernel’s WiFi implementation accepted plaintext fragments in certain situations. A physically proximate attacker could use this issue to inject packets. (CVE-2020-26145) It was discovered that a race condition existed in the Atheros Ath9k WiFi driver in the Linux kernel. An attacker could possibly use this to expose sensitive information (WiFi network traffic). (CVE-2020-3702) It was discovered a race condition existed in the Unix domain socket implementation in 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-2021-0920) It was discovered that the IPv6 implementation in the Linux kernel contained 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-2021-0935) Zygo Blaxell discovered that the btrfs file system implementation in the Linux kernel contained a race condition during certain cloning operations. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2021-28964) Dan Carpenter discovered that the block device manager (dm) implementation in the Linux kernel contained a buffer overflow in the ioctl for listing devices. A privileged local attacker could use this to cause a denial of service (system crash). (CVE-2021-31916) It was discovered that the Option USB High Speed Mobile device driver in the Linux kernel did not properly handle error conditions. A physically proximate attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-37159) It was discovered that the network packet filtering implementation in the Linux kernel did not properly initialize information in certain circumstances. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2021-39636) 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) Luo Likang discovered that the FireDTV Firewire driver in the Linux kernel did not properly perform bounds checking in some situations. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-42739) Brendan Dolan-Gavitt discovered that the Marvell WiFi-Ex USB device driver in the Linux kernel did not properly handle some error conditions. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2021-43976) Amit Klein discovered that the IPv4 implementation in the Linux kernel could disclose internal state in some situations. An attacker could possibly use this to expose sensitive information. (CVE-2021-45486)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/linux-image-4.4.0-223-lowlatency<4.4.0-223.256
4.4.0-223.256
=16.04
All of
ubuntu/linux-image-virtual<4.4.0.223.230
4.4.0.223.230
=16.04
All of
ubuntu/linux-image-generic<4.4.0.223.230
4.4.0.223.230
=16.04
All of
ubuntu/linux-image-4.4.0-223-generic<4.4.0-223.256
4.4.0-223.256
=16.04
All of
ubuntu/linux-image-aws<4.4.0.1139.144
4.4.0.1139.144
=16.04
All of
ubuntu/linux-image-4.4.0-1104-kvm<4.4.0-1104.113
4.4.0-1104.113
=16.04
All of
ubuntu/linux-image-kvm<4.4.0.1104.102
4.4.0.1104.102
=16.04
All of
ubuntu/linux-image-4.4.0-1139-aws<4.4.0-1139.153
4.4.0-1139.153
=16.04
All of
ubuntu/linux-image-lowlatency<4.4.0.223.230
4.4.0.223.230
=16.04
All of
ubuntu/linux-image-4.4.0-223-generic<4.4.0-223.256~14.04.1
4.4.0-223.256~14.04.1
=14.04
All of
ubuntu/linux-image-lowlatency-lts-xenial<4.4.0.223.194
4.4.0.223.194
=14.04
All of
ubuntu/linux-image-generic-lts-xenial<4.4.0.223.194
4.4.0.223.194
=14.04
All of
ubuntu/linux-image-aws<4.4.0.1103.101
4.4.0.1103.101
=14.04
All of
ubuntu/linux-image-4.4.0-1103-aws<4.4.0-1103.108
4.4.0-1103.108
=14.04
All of
ubuntu/linux-image-4.4.0-223-lowlatency<4.4.0-223.256~14.04.1
4.4.0-223.256~14.04.1
=14.04
All of
ubuntu/linux-image-virtual-lts-xenial<4.4.0.223.194
4.4.0.223.194
=14.04

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the vulnerability ID for this advisory?

    The vulnerability ID for this advisory is USN-5361-1.

  • What is the severity of USN-5361-1?

    The severity of USN-5361-1 is not specified in the information provided.

  • How does the VFIO PCI driver vulnerability (CVE-2020-12888) affect the Linux kernel?

    The VFIO PCI driver vulnerability in the Linux kernel allows a local attacker to cause a denial of service (system crash) by improperly handling attempts to access disabled memory spaces.

  • What is the impact of the WiFi implementation vulnerability (CVE-2021-42739) on the Linux kernel?

    The WiFi implementation vulnerability in the Linux kernel allows an attacker within Wi-Fi range to decrypt traffic, inject malicious packets, and potentially impersonate network services or deploy RADIUS attacks.

  • What are the affected software versions for USN-5361-1?

    The affected software versions for USN-5361-1 include Ubuntu 16.04 and 14.04 with various Linux kernel versions.

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