Advisory Published

USN-4413-1: Linux kernel vulnerabilities

First published: Thu Jul 02 2020(Updated: )

Matthew Sheets discovered that the SELinux network label handling implementation in the Linux kernel could be coerced into de-referencing a NULL pointer. A remote attacker could use this to cause a denial of service (system crash). (CVE-2020-10711) It was discovered that the SCSI generic (sg) driver in the Linux kernel did not properly handle certain error conditions correctly. A local privileged attacker could use this to cause a denial of service (system crash). (CVE-2020-12770) It was discovered that the USB Gadget device driver in the Linux kernel did not validate arguments passed from configfs in some situations. A local attacker could possibly use this to cause a denial of service (system crash) or possibly expose sensitive information. (CVE-2020-13143) Dmitry Vyukov discovered that the SELinux netlink security hook in the Linux kernel did not validate messages in some situations. A privileged attacker could use this to bypass SELinux netlink restrictions. (CVE-2020-10751) It was discovered that the KVM implementation in the Linux kernel did not properly deallocate memory on initialization for some processors. A local attacker could possibly use this to cause a denial of service. (CVE-2020-12768)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/linux-image-5.0.0-1043-gke<5.0.0-1043.44
5.0.0-1043.44
=18.04
All of
ubuntu/linux-image-5.0.0-1063-oem-osp1<5.0.0-1063.68
5.0.0-1063.68
=18.04
All of
ubuntu/linux-image-gke-5.0<5.0.0.1043.28
5.0.0.1043.28
=18.04
All of
ubuntu/linux-image-oem-osp1<5.0.0.1063.61
5.0.0.1063.61
=18.04

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the severity of CVE-2020-10711?

    The severity of CVE-2020-10711 is denial of service (system crash).

  • How can a remote attacker exploit CVE-2020-10711?

    A remote attacker can exploit CVE-2020-10711 by coercing the SELinux network label handling implementation in the Linux kernel into dereferencing a NULL pointer.

  • Which version of the Linux kernel is affected by CVE-2020-10711?

    The Linux kernel version 5.0.0-1043-gke is affected by CVE-2020-10711.

  • What is the remedy for CVE-2020-10711?

    The remedy for CVE-2020-10711 is to upgrade to version 5.0.0-1043.44 of the linux-image-5.0.0-1043-gke package.

  • Where can I find more information about CVE-2020-10711?

    More information about CVE-2020-10711 can be found at the following link: [https://ubuntu.com/security/CVE-2020-10711](https://ubuntu.com/security/CVE-2020-10711)

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