CWE
119 416 476 362
Advisory Published

USN-5779-1: Linux kernel (Azure) vulnerabilities

First published: Wed Dec 14 2022(Updated: )

It was discovered that the NFSD implementation in the Linux kernel did not properly handle some RPC messages, leading to a buffer overflow. A remote attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-43945) 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-fde<5.15.0.1029.36.6
5.15.0.1029.36.6
=22.04
All of
ubuntu/linux-image-azure-lts-22.04<5.15.0.1029.25
5.15.0.1029.25
=22.04
All of
ubuntu/linux-image-azure<5.15.0.1029.25
5.15.0.1029.25
=22.04
All of
ubuntu/linux-image-5.15.0-1029-azure<5.15.0-1029.36
5.15.0-1029.36
=22.04
All of
ubuntu/linux-image-5.15.0-1029-azure-fde<5.15.0-1029.36.1
5.15.0-1029.36.1
=22.04
All of
ubuntu/linux-image-azure<5.15.0.1029.36~20.04.19
5.15.0.1029.36~20.04.19
=20.04
All of
ubuntu/linux-image-5.15.0-1029-azure<5.15.0-1029.36~20.04.1
5.15.0-1029.36~20.04.1
=20.04

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the severity of USN-5779-1?

    The severity of USN-5779-1 is high.

  • How does the NFSD vulnerability in USN-5779-1 impact the system?

    The NFSD vulnerability in USN-5779-1 can lead to a denial of service (system crash) or possible execution of arbitrary code.

  • Which versions of Ubuntu are affected by the Linux kernel vulnerabilities in USN-5779-1?

    The Linux kernel vulnerabilities in USN-5779-1 affect Ubuntu version 22.04 and 20.04.

  • What is the recommended remedy for USN-5779-1 on Ubuntu 22.04?

    The recommended remedy for USN-5779-1 on Ubuntu 22.04 is to update the linux-image-azure-fde package to version 5.15.0.1029.36.6.

  • Where can I find more information about the Linux kernel vulnerabilities in USN-5779-1?

    You can find more information about the Linux kernel vulnerabilities in USN-5779-1 on the Ubuntu security advisory page.

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