Advisory Published

USN-4411-1: Linux kernel vulnerabilities

First published: Mon Jul 06 2020(Updated: )

It was discovered that the elf handling code in the Linux kernel did not initialize memory before using it in certain situations. A local attacker could use this to possibly expose sensitive information (kernel memory). (CVE-2020-10732) 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) 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-5.4.0-1013-raspi<5.4.0-1013.13
5.4.0-1013.13
=20.04
All of
ubuntu/linux-image-5.4.0-1018-aws<5.4.0-1018.18
5.4.0-1018.18
=20.04
All of
ubuntu/linux-image-5.4.0-1019-gcp<5.4.0-1019.19
5.4.0-1019.19
=20.04
All of
ubuntu/linux-image-5.4.0-1019-oracle<5.4.0-1019.19
5.4.0-1019.19
=20.04
All of
ubuntu/linux-image-5.4.0-1020-azure<5.4.0-1020.20
5.4.0-1020.20
=20.04
All of
ubuntu/linux-image-5.4.0-28-generic<5.4.0-28.32
5.4.0-28.32
=20.04
All of
ubuntu/linux-image-5.4.0-40-generic<5.4.0-40.44
5.4.0-40.44
=20.04
All of
ubuntu/linux-image-5.4.0-40-generic-lpae<5.4.0-40.44
5.4.0-40.44
=20.04
All of
ubuntu/linux-image-5.4.0-40-lowlatency<5.4.0-40.44
5.4.0-40.44
=20.04
All of
ubuntu/linux-image-aws<5.4.0.1018.19
5.4.0.1018.19
=20.04
All of
ubuntu/linux-image-azure<5.4.0.1020.19
5.4.0.1020.19
=20.04
All of
ubuntu/linux-image-gcp<5.4.0.1019.17
5.4.0.1019.17
=20.04
All of
ubuntu/linux-image-generic<5.4.0.40.43
5.4.0.40.43
=20.04
All of
ubuntu/linux-image-generic-lpae<5.4.0.40.43
5.4.0.40.43
=20.04
All of
ubuntu/linux-image-gke<5.4.0.1019.17
5.4.0.1019.17
=20.04
All of
ubuntu/linux-image-kvm<5.4.0.1018.17
5.4.0.1018.17
=20.04
All of
ubuntu/linux-image-lowlatency<5.4.0.40.43
5.4.0.40.43
=20.04
All of
ubuntu/linux-image-oem<5.4.0.40.43
5.4.0.40.43
=20.04
All of
ubuntu/linux-image-oem-osp1<5.4.0.40.43
5.4.0.40.43
=20.04
All of
ubuntu/linux-image-oracle<5.4.0.1019.17
5.4.0.1019.17
=20.04
All of
ubuntu/linux-image-raspi<5.4.0.1013.13
5.4.0.1013.13
=20.04
All of
ubuntu/linux-image-raspi2<5.4.0.1013.13
5.4.0.1013.13
=20.04
All of
ubuntu/linux-image-virtual<5.4.0.40.43
5.4.0.40.43
=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-2020-10732.

  • What is the severity of CVE-2020-10732?

    The severity of CVE-2020-10732 is not mentioned in the advisory.

  • Which versions of Ubuntu are affected by this vulnerability?

    Ubuntu 20.04 is affected by this vulnerability.

  • How do I fix the vulnerability CVE-2020-10732?

    To fix this vulnerability, update to Linux kernel version 5.4.0-1013.13 or later.

  • Where can I find more information about this vulnerability?

    You can find more information about this vulnerability at the following URLs: [CVE-2020-13143](https://ubuntu.com/security/CVE-2020-13143), [CVE-2020-12768](https://ubuntu.com/security/CVE-2020-12768), [CVE-2020-10711](https://ubuntu.com/security/CVE-2020-10711).

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