Advisory Published

USN-6766-2: Linux kernel vulnerabilities

First published: Wed May 15 2024(Updated: )

It was discovered that the Open vSwitch implementation in the Linux kernel could overflow its stack during recursive action operations under certain conditions. A local attacker could use this to cause a denial of service (system crash). (CVE-2024-1151) Sander Wiebing, Alvise de Faveri Tron, Herbert Bos, and Cristiano Giuffrida discovered that the Linux kernel mitigations for the initial Branch History Injection vulnerability (CVE-2022-0001) were insufficient for Intel processors. A local attacker could potentially use this to expose sensitive information. (CVE-2024-2201) Chenyuan Yang discovered that the RDS Protocol implementation in the Linux kernel contained an out-of-bounds read vulnerability. An attacker could use this to possibly cause a denial of service (system crash). (CVE-2024-23849) Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems:

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/linux-image-5.15.0-1054-raspi<5.15.0-1054.57
5.15.0-1054.57
Ubuntu=22.04
All of
ubuntu/linux-image-raspi<5.15.0.1054.52
5.15.0.1054.52
Ubuntu=22.04
All of
ubuntu/linux-image-raspi-nolpae<5.15.0.1054.52
5.15.0.1054.52
Ubuntu=22.04
All of
ubuntu/linux-image-5.15.0-106-generic<5.15.0-106.116~20.04.1
5.15.0-106.116~20.04.1
Ubuntu=20.04
All of
ubuntu/linux-image-5.15.0-106-generic-64k<5.15.0-106.116~20.04.1
5.15.0-106.116~20.04.1
Ubuntu=20.04
All of
ubuntu/linux-image-5.15.0-106-generic-lpae<5.15.0-106.116~20.04.1
5.15.0-106.116~20.04.1
Ubuntu=20.04
All of
ubuntu/linux-image-generic-64k-hwe-20.04<5.15.0.106.116~20.04.1
5.15.0.106.116~20.04.1
Ubuntu=20.04
All of
ubuntu/linux-image-generic-hwe-20.04<5.15.0.106.116~20.04.1
5.15.0.106.116~20.04.1
Ubuntu=20.04
All of
ubuntu/linux-image-generic-lpae-hwe-20.04<5.15.0.106.116~20.04.1
5.15.0.106.116~20.04.1
Ubuntu=20.04
All of
ubuntu/linux-image-oem-20.04<5.15.0.106.116~20.04.1
5.15.0.106.116~20.04.1
Ubuntu=20.04
All of
ubuntu/linux-image-oem-20.04b<5.15.0.106.116~20.04.1
5.15.0.106.116~20.04.1
Ubuntu=20.04
All of
ubuntu/linux-image-oem-20.04c<5.15.0.106.116~20.04.1
5.15.0.106.116~20.04.1
Ubuntu=20.04
All of
ubuntu/linux-image-virtual-hwe-20.04<5.15.0.106.116~20.04.1
5.15.0.106.116~20.04.1
Ubuntu=20.04

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Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the severity of USN-6766-2?

    USN-6766-2 is classified as a denial of service vulnerability that can lead to a system crash.

  • How do I fix USN-6766-2?

    To fix USN-6766-2, upgrade your system to the patched versions of the affected packages as specified in the advisory.

  • Which systems are affected by USN-6766-2?

    USN-6766-2 affects Ubuntu 22.04 and 20.04 systems running specific versions of the linux-image packages.

  • Is there a risk of exploitation for USN-6766-2?

    Yes, a local attacker could potentially exploit USN-6766-2 to cause a denial of service.

  • What specific versions of linux-image are vulnerable in USN-6766-2?

    The vulnerable versions include linux-image-5.15.0-1054-57 and 5.15.0-106.116~20.04.1 among others.

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