Advisory Published

USN-5485-2: Linux kernel (OEM) vulnerabilities

First published: Fri Jul 01 2022(Updated: )

It was discovered that some Intel processors did not completely perform cleanup actions on multi-core shared buffers. A local attacker could possibly use this to expose sensitive information. (CVE-2022-21123) It was discovered that some Intel processors did not completely perform cleanup actions on microarchitectural fill buffers. A local attacker could possibly use this to expose sensitive information. (CVE-2022-21125) It was discovered that some Intel processors did not properly perform cleanup during specific special register write operations. A local attacker could possibly use this to expose sensitive information. (CVE-2022-21166)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/linux-image-oem-20.04c<5.14.0.1044.40
5.14.0.1044.40
Ubuntu Ubuntu=20.04
All of
ubuntu/linux-image-oem-20.04b<5.14.0.1044.40
5.14.0.1044.40
Ubuntu Ubuntu=20.04
All of
ubuntu/linux-image-oem-20.04<5.14.0.1044.40
5.14.0.1044.40
Ubuntu Ubuntu=20.04
All of
ubuntu/linux-image-5.14.0-1044-oem<5.14.0-1044.49
5.14.0-1044.49
Ubuntu Ubuntu=20.04

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the severity of USN-5485-2?

    The severity of USN-5485-2 is not specified in the provided information.

  • How can the vulnerabilities in USN-5485-2 be exploited?

    The provided information does not specify how the vulnerabilities in USN-5485-2 can be exploited.

  • Which software versions are affected by USN-5485-2?

    The affected software versions for USN-5485-2 are linux-image-oem-20.04c, linux-image-oem-20.04b, linux-image-oem-20.04d, linux-image-oem-20.04, and linux-image-5.14.0-1044-oem.

  • How do I fix the vulnerabilities in USN-5485-2?

    To fix the vulnerabilities in USN-5485-2, update the affected software versions to linux-image-oem-20.04c version 5.14.0.1044.40 or higher, linux-image-oem-20.04b version 5.14.0.1044.40 or higher, linux-image-oem-20.04d version 5.14.0.1044.40 or higher, linux-image-oem-20.04 version 5.14.0.1044.40 or higher, or linux-image-5.14.0-1044-oem version 5.14.0-1044.49 or higher.

  • Where can I find more information about USN-5485-2?

    You can find more information about USN-5485-2 at the following references: [CVE-2022-21125](https://ubuntu.com/security/CVE-2022-21125), [CVE-2022-21123](https://ubuntu.com/security/CVE-2022-21123), [CVE-2022-21166](https://ubuntu.com/security/CVE-2022-21166).

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