CWE
416 476 362
Advisory Published

USN-5756-3: Linux kernel (Azure) vulnerabilities

First published: Mon Dec 12 2022(Updated: )

Jann Horn discovered that the Linux kernel did not properly track memory allocations for anonymous VMA mappings in some situations, leading to potential data structure reuse. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-42703) It was discovered that a memory leak existed in the IPv6 implementation of the Linux kernel. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2022-3524) It was discovered that a race condition existed in the Bluetooth subsystem 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-2022-3564) It was discovered that the ISDN implementation of the Linux kernel contained a use-after-free vulnerability. A privileged user could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-3565) It was discovered that the TCP implementation in the Linux kernel contained a data race condition. An attacker could possibly use this to cause undesired behaviors. (CVE-2022-3566) It was discovered that the IPv6 implementation in the Linux kernel contained a data race condition. An attacker could possibly use this to cause undesired behaviors. (CVE-2022-3567) It was discovered that the Realtek RTL8152 USB Ethernet adapter driver in the Linux kernel did not properly handle certain error conditions. A local attacker with physical access could plug in a specially crafted USB device to cause a denial of service (memory exhaustion). (CVE-2022-3594) It was discovered that a null pointer dereference existed in the NILFS2 file system implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash). (CVE-2022-3621)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/linux-image-azure-lts-20.04<5.4.0.1098.92
5.4.0.1098.92
=20.04
All of
ubuntu/linux-image-5.4.0-1098-azure<5.4.0-1098.104
5.4.0-1098.104
=20.04
All of
ubuntu/linux-image-azure<5.4.0.1098.72
5.4.0.1098.72
=18.04
All of
ubuntu/linux-image-5.4.0-1098-azure<5.4.0-1098.104~18.04.2
5.4.0-1098.104~18.04.2
=18.04

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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-5756-3.

  • What is the severity of the vulnerabilities?

    The severity of the vulnerabilities is not specified in the provided information.

  • Which packages and versions are affected?

    The linux-image-azure-lts-20.04 package version 5.4.0.1098.92, the linux-image-5.4.0-1098-azure package version 5.4.0-1098.104, and the linux-image-azure package version 5.4.0.1098.72 are affected.

  • How can I fix the vulnerabilities?

    To fix the vulnerabilities, update the affected packages to the recommended versions: linux-image-azure-lts-20.04 (5.4.0.1098.92), linux-image-5.4.0-1098-azure (5.4.0-1098.104), and linux-image-azure (5.4.0.1098.72).

  • Where can I find more information about the vulnerabilities?

    You can find more information about the vulnerabilities in the following references: [CVE-2022-42703](https://ubuntu.com/security/CVE-2022-42703), [CVE-2022-3524](https://ubuntu.com/security/CVE-2022-3524), and [CVE-2022-3594](https://ubuntu.com/security/CVE-2022-3594).

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