CWE
362
Advisory Published

USN-5116-1: Linux kernel vulnerabilities

First published: Wed Oct 20 2021(Updated: )

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) Alois Wohlschlager discovered that the overlay file system in the Linux kernel did not restrict private clones in some situations. An attacker could use this to expose sensitive information. (CVE-2021-3732) It was discovered that the KVM hypervisor implementation in the Linux kernel did not properly compute the access permissions for shadow pages in some situations. A local attacker could use this to cause a denial of service. (CVE-2021-38198) It was discovered that the Xilinx 10/100 Ethernet Lite device driver in the Linux kernel could report pointer addresses in some situations. An attacker could use this information to ease the exploitation of another vulnerability. (CVE-2021-38205) It was discovered that the ext4 file system in the Linux kernel contained a race condition when writing xattrs to an inode. A local attacker could use this to cause a denial of service or possibly gain administrative privileges. (CVE-2021-40490) 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)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/linux-image-5.4.0-89-generic<5.4.0-89.100
5.4.0-89.100
=20.04
All of
ubuntu/linux-image-virtual<5.4.0.89.93
5.4.0.89.93
=20.04
All of
ubuntu/linux-image-generic<5.4.0.89.93
5.4.0.89.93
=20.04
All of
ubuntu/linux-image-oem<5.4.0.89.93
5.4.0.89.93
=20.04
All of
ubuntu/linux-image-5.4.0-1020-bluefield<5.4.0-1020.23
5.4.0-1020.23
=20.04
All of
ubuntu/linux-image-5.4.0-89-generic-lpae<5.4.0-89.100
5.4.0-89.100
=20.04
All of
ubuntu/linux-image-bluefield<5.4.0.1020.21
5.4.0.1020.21
=20.04
All of
ubuntu/linux-image-oem-osp1<5.4.0.89.93
5.4.0.89.93
=20.04
All of
ubuntu/linux-image-5.4.0-1048-kvm<5.4.0-1048.50
5.4.0-1048.50
=20.04
All of
ubuntu/linux-image-5.4.0-89-lowlatency<5.4.0-89.100
5.4.0-89.100
=20.04
All of
ubuntu/linux-image-kvm<5.4.0.1048.47
5.4.0.1048.47
=20.04
All of
ubuntu/linux-image-generic-lpae<5.4.0.89.93
5.4.0.89.93
=20.04
All of
ubuntu/linux-image-lowlatency<5.4.0.89.93
5.4.0.89.93
=20.04
All of
ubuntu/linux-image-generic-hwe-18.04<5.4.0.89.100~18.04.79
5.4.0.89.100~18.04.79
=18.04
All of
ubuntu/linux-image-snapdragon-hwe-18.04<5.4.0.89.100~18.04.79
5.4.0.89.100~18.04.79
=18.04
All of
ubuntu/linux-image-5.4.0-89-generic<5.4.0-89.100~18.04.1
5.4.0-89.100~18.04.1
=18.04
All of
ubuntu/linux-image-oem<5.4.0.89.100~18.04.79
5.4.0.89.100~18.04.79
=18.04
All of
ubuntu/linux-image-5.4.0-89-generic-lpae<5.4.0-89.100~18.04.1
5.4.0-89.100~18.04.1
=18.04
All of
ubuntu/linux-image-oem-osp1<5.4.0.89.100~18.04.79
5.4.0.89.100~18.04.79
=18.04
All of
ubuntu/linux-image-generic-lpae-hwe-18.04<5.4.0.89.100~18.04.79
5.4.0.89.100~18.04.79
=18.04
All of
ubuntu/linux-image-5.4.0-1055-gcp<5.4.0-1055.59~18.04.1
5.4.0-1055.59~18.04.1
=18.04
All of
ubuntu/linux-image-virtual-hwe-18.04<5.4.0.89.100~18.04.79
5.4.0.89.100~18.04.79
=18.04
All of
ubuntu/linux-image-gcp<5.4.0.1055.41
5.4.0.1055.41
=18.04
All of
ubuntu/linux-image-5.4.0-89-lowlatency<5.4.0-89.100~18.04.1
5.4.0-89.100~18.04.1
=18.04
All of
ubuntu/linux-image-lowlatency-hwe-18.04<5.4.0.89.100~18.04.79
5.4.0.89.100~18.04.79
=18.04

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the vulnerability ID of this advisory?

    The vulnerability ID of this advisory is USN-5116-1.

  • What is the severity of USN-5116-1?

    The severity of USN-5116-1 is not specified in the information provided.

  • What is the affected software for USN-5116-1?

    The affected software for USN-5116-1 is the Linux kernel with specific versions mentioned in the advisory.

  • How can an attacker exploit CVE-2020-3702?

    An attacker can exploit CVE-2020-3702 by leveraging a race condition in the Atheros Ath9k WiFi driver to expose sensitive information.

  • Where can I find more information about this vulnerability?

    You can find more information about this vulnerability on the Ubuntu Security Notices website using the provided reference links.

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