CWE
190 416 362
Advisory Published

USN-6020-1: Linux kernel (BlueField) vulnerabilities

First published: Fri Apr 14 2023(Updated: )

It was discovered that the System V IPC implementation in the Linux kernel did not properly handle large shared memory counts. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2021-3669) It was discovered that the KVM VMX implementation in the Linux kernel did not properly handle indirect branch prediction isolation between L1 and L2 VMs. An attacker in a guest VM could use this to expose sensitive information from the host OS or other guest VMs. (CVE-2022-2196) Gerald Lee discovered that the USB Gadget file system implementation in the Linux kernel contained a race condition, leading to a use-after-free vulnerability in some situations. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-4382) It was discovered that the RNDIS USB driver in the Linux kernel contained an integer overflow vulnerability. A local attacker with physical access could plug in a malicious USB device to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-23559)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/linux-image-5.4.0-1060-bluefield<5.4.0-1060.66
5.4.0-1060.66
=20.04
All of
ubuntu/linux-image-bluefield<5.4.0.1060.55
5.4.0.1060.55
=20.04

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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-2021-3669.

  • What is the severity of CVE-2021-3669?

    The severity of CVE-2021-3669 is not specified in the advisory.

  • How can CVE-2021-3669 be exploited?

    CVE-2021-3669 can be exploited by a local attacker to cause a denial of service by exhausting memory.

  • What is the recommended remedy for CVE-2021-3669?

    The recommended remedy for CVE-2021-3669 is to update to Linux kernel version 5.4.0-1060.66 or later.

  • Where can I find more information about CVE-2021-3669?

    More information about CVE-2021-3669 can be found at the following link: [CVE-2021-3669](https://ubuntu.com/security/CVE-2021-3669)

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