CWE
416 476 362
Advisory Published

USN-5774-1: 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 race condition existed in the instruction emulator of the Linux kernel on Arm 64-bit systems. A local attacker could use this to cause a denial of service (system crash). (CVE-2022-20422) It was discovered that the KVM implementation in the Linux kernel did not properly handle virtual CPUs without APICs in certain situations. A local attacker could possibly use this to cause a denial of service (host system crash). (CVE-2022-2153) Hao Sun and Jiacheng Xu discovered that the NILFS file system 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-2022-2978) Abhishek Shah discovered a race condition in the PF_KEYv2 implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information (kernel memory). (CVE-2022-3028) It was discovered that the video4linux driver for Empia based TV cards in the Linux kernel did not properly perform reference counting in some situations, 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-2022-3239) 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) It was discovered that the IDT 77252 ATM PCI device driver in the Linux kernel did not properly remove any pending timers during device exit, resulting in a use-after-free vulnerability. A local attacker could possibly use this to cause a denial of service (system crash) or execute arbitrary code. (CVE-2022-3635) It was discovered that the Netlink Transformation (XFRM) subsystem in the Linux kernel contained a reference counting error. A local attacker could use this to cause a denial of service (system crash). (CVE-2022-36879) Xingyuan Mo and Gengjia Chen discovered that the Promise SuperTrak EX storage controller driver in the Linux kernel did not properly handle certain structures. A local attacker could potentially use this to expose sensitive information (kernel memory). (CVE-2022-40768)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/linux-image-4.15.0-1157-azure<4.15.0-1157.172
4.15.0-1157.172
=18.04
All of
ubuntu/linux-image-azure-lts-18.04<4.15.0.1157.125
4.15.0.1157.125
=18.04
All of
ubuntu/linux-image-4.15.0-1157-azure<4.15.0-1157.172~14.04.2
4.15.0-1157.172~14.04.2
=14.04
All of
ubuntu/linux-image-azure<4.15.0.1157.124
4.15.0.1157.124
=14.04

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Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the severity of USN-5774-1?

    The severity of USN-5774-1 is medium.

  • How does CVE-2022-42703 impact Linux kernel (Azure)?

    CVE-2022-42703 can potentially allow a local attacker to cause a denial of service (system crash) or execute arbitrary code in the Linux kernel (Azure).

  • What is the recommended remedy for Ubuntu 18.04 affected by USN-5774-1?

    For Ubuntu 18.04, the recommended remedy for USN-5774-1 is to update the linux-image-4.15.0-1157-azure package to version 4.15.0-1157.172.

  • How can I fix the vulnerability in Ubuntu 14.04 affected by USN-5774-1?

    To fix the vulnerability in Ubuntu 14.04, update the linux-image-4.15.0-1157-azure package to version 4.15.0-1157.172~14.04.2.

  • Where can I find more information about the vulnerabilities mentioned in USN-5774-1?

    You can find more information about the vulnerabilities mentioned in USN-5774-1 on Ubuntu's official security website.

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