CWE
416 362
Advisory Published

USN-6092-1: Linux kernel (Azure) vulnerabilities

First published: Thu May 18 2023(Updated: )

Jordy Zomer and Alexandra Sandulescu discovered that the Linux kernel did not properly implement speculative execution barriers in usercopy functions in certain situations. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2023-0459) Xingyuan Mo discovered that the x86 KVM implementation in the Linux kernel did not properly initialize some data structures. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2023-1513) It was discovered that a use-after-free vulnerability existed in the iSCSI TCP implementation in the Linux kernel. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2023-2162) It was discovered that the NET/ROM protocol implementation in the Linux kernel contained a race condition 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-2023-32269) Duoming Zhou discovered that a race condition existed in the infrared receiver/transceiver driver in the Linux kernel, leading to a use-after- free vulnerability. A privileged attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-1118)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/linux-image-4.15.0-1165-azure<4.15.0-1165.180
4.15.0-1165.180
=18.04
All of
ubuntu/linux-image-azure-lts-18.04<4.15.0.1165.133
4.15.0.1165.133
=18.04
All of
ubuntu/linux-image-4.15.0-1165-azure<4.15.0-1165.180~16.04.1
4.15.0-1165.180~16.04.1
=16.04
All of
ubuntu/linux-image-azure<4.15.0.1165.149
4.15.0.1165.149
=16.04
All of
ubuntu/linux-image-4.15.0-1165-azure<4.15.0-1165.180~14.04.1
4.15.0-1165.180~14.04.1
=14.04
All of
ubuntu/linux-image-azure<4.15.0.1165.131
4.15.0.1165.131
=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 CVE-2023-0459.

  • How does the vulnerability in the Linux kernel impact Azure?

    The vulnerability allows a local attacker to expose sensitive information (kernel memory) in certain situations.

  • Which versions of the Linux kernel are affected?

    The Linux kernel versions 4.15.0-1165.180, 4.15.0.1165.133, 4.15.0-1165.180~16.04.1, 4.15.0.1165.149, 4.15.0-1165.180~14.04.1, and 4.15.0.1165.131 are affected.

  • How can I fix the vulnerability in Ubuntu 18.04?

    To fix the vulnerability in Ubuntu 18.04, update the linux-image-4.15.0-1165-azure package to version 4.15.0-1165.180.

  • Are there any known exploits for this vulnerability?

    No known exploits for this vulnerability have been reported.

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