CWE
416 362
Advisory Published

USN-6162-1: Linux kernel (Intel IoTG) vulnerabilities

First published: Wed Jun 14 2023(Updated: )

Patryk Sondej and Piotr Krysiuk discovered that a race condition existed in the netfilter subsystem of the Linux kernel when processing batch requests, 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-2023-32233) Gwangun Jung discovered that the Quick Fair Queueing 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-2023-31436) Reima Ishii discovered that the nested KVM implementation for Intel x86 processors in the Linux kernel did not properly validate control registers in certain situations. An attacker in a guest VM could use this to cause a denial of service (guest crash). (CVE-2023-30456) It was discovered that the Broadcom FullMAC USB WiFi driver in the Linux kernel did not properly perform data buffer size validation in some situations. A physically proximate attacker could use this to craft a malicious USB device that when inserted, could cause a denial of service (system crash) or possibly expose sensitive information. (CVE-2023-1380) Jean-Baptiste Cayrou discovered that the shiftfs file system in the Ubuntu Linux kernel contained a race condition when handling inode locking in some situations. A local attacker could use this to cause a denial of service (kernel deadlock). (CVE-2023-2612)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/linux-image-intel-iotg<5.15.0.1031.36~20.04.23
5.15.0.1031.36~20.04.23
=20.04
All of
ubuntu/linux-image-5.15.0-1031-intel-iotg<5.15.0-1031.36~20.04.1
5.15.0-1031.36~20.04.1
=20.04
All of
ubuntu/linux-image-intel<5.15.0.1031.36~20.04.23
5.15.0.1031.36~20.04.23
=20.04

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the severity of USN-6162-1?

    The severity of USN-6162-1 is high.

  • What is the vulnerability description of USN-6162-1?

    USN-6162-1 is a use-after-free vulnerability in the netfilter subsystem of the Linux kernel when processing batch requests.

  • How can a local attacker exploit USN-6162-1?

    A local attacker can exploit USN-6162-1 to cause a denial of service (system crash) or possibly execute arbitrary code.

  • Which versions of Ubuntu are affected by USN-6162-1?

    USN-6162-1 affects Ubuntu 20.04.

  • How do I fix USN-6162-1?

    To fix USN-6162-1, update the affected software to version 5.15.0.1031.36~20.04.23 or later.

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