Advisory Published

USN-5572-2: Linux kernel (AWS) vulnerabilities

First published: Tue Aug 30 2022(Updated: )

Roger Pau Monné discovered that the Xen virtual block driver in the Linux kernel did not properly initialize memory pages to be used for shared communication with the backend. A local attacker could use this to expose sensitive information (guest kernel memory). (CVE-2022-26365) Roger Pau Monné discovered that the Xen paravirtualization frontend in the Linux kernel did not properly initialize memory pages to be used for shared communication with the backend. A local attacker could use this to expose sensitive information (guest kernel memory). (CVE-2022-33740) It was discovered that the Xen paravirtualization frontend in the Linux kernel incorrectly shared unrelated data when communicating with certain backends. A local attacker could use this to cause a denial of service (guest crash) or expose sensitive information (guest kernel memory). (CVE-2022-33741)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/linux-image-4.4.0-1112-aws<4.4.0-1112.118
4.4.0-1112.118
=14.04
All of
ubuntu/linux-image-aws<4.4.0.1112.109
4.4.0.1112.109
=14.04

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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-2022-26365.

  • What is the impact of CVE-2022-26365?

    CVE-2022-26365 can be used by a local attacker to expose sensitive information from guest kernel memory.

  • Which Linux kernel versions are affected by CVE-2022-26365?

    Linux kernel versions 4.4.0-1112-aws and 4.4.0.1112.109 on Ubuntu 14.04 are affected by CVE-2022-26365.

  • How can I fix the vulnerability?

    To fix the vulnerability, update to Linux kernel version 4.4.0-1112.118 on Ubuntu 14.04.

  • Where can I find more information about CVE-2022-26365?

    More information about CVE-2022-26365 can be found at the following URL: https://ubuntu.com/security/CVE-2022-26365

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