CWE
416
Advisory Published

USN-6346-1: Linux kernel (Raspberry Pi) vulnerabilities

First published: Wed Sep 06 2023(Updated: )

Daniel Moghimi discovered that some Intel(R) Processors did not properly clear microarchitectural state after speculative execution of various instructions. A local unprivileged user could use this to obtain to sensitive information. (CVE-2022-40982) Tavis Ormandy discovered that some AMD processors did not properly handle speculative execution of certain vector register instructions. A local attacker could use this to expose sensitive information. (CVE-2023-20593) It was discovered that the universal 32bit network packet classifier implementation 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-2023-3609) It was discovered that the Quick Fair Queueing network scheduler implementation in the Linux kernel contained an out-of-bounds write vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-3611) It was discovered that the network packet classifier with netfilter/firewall marks implementation in the Linux kernel did not properly handle reference counting, 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-2023-3776)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/linux-image-5.4.0-1092-raspi<5.4.0-1092.103
5.4.0-1092.103
=20.04
All of
ubuntu/linux-image-raspi<5.4.0.1092.122
5.4.0.1092.122
=20.04
All of
ubuntu/linux-image-raspi2<5.4.0.1092.122
5.4.0.1092.122
=20.04
All of
ubuntu/linux-image-5.4.0-1092-raspi<5.4.0-1092.103~18.04.1
5.4.0-1092.103~18.04.1
=18.04
All of
ubuntu/linux-image-raspi-hwe-18.04<5.4.0.1092.89
5.4.0.1092.89
=18.04

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the vulnerability ID for this Linux kernel vulnerability?

    The vulnerability ID for this Linux kernel vulnerability is CVE-2022-40982.

  • How can a local unprivileged user exploit this vulnerability?

    A local unprivileged user can exploit this vulnerability to obtain sensitive information.

  • What versions of Linux kernel are affected by this vulnerability?

    Versions 5.4.0-1092.103, 5.4.0.1092.122, 5.4.0.1092.122, 5.4.0-1092.103~18.04.1, and 5.4.0.1092.89 of Linux kernel are affected by this vulnerability.

  • How can I fix this Linux kernel vulnerability?

    To fix this Linux kernel vulnerability, update to version 5.4.0-1092.103 of the Linux kernel.

  • Where can I find more information about this vulnerability?

    You can find more information about this vulnerability on the Ubuntu Security website.

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