CWE
190 416 362
Advisory Published

USN-4069-2: Linux kernel (HWE) vulnerabilities

First published: Thu Aug 01 2019(Updated: )

USN-4069-1 fixed vulnerabilities in the Linux kernel for Ubuntu 19.04. This update provides the corresponding updates for the Linux Hardware Enablement (HWE) kernel from Ubuntu 19.04 for Ubuntu 18.04 LTS. It was discovered that an integer overflow existed in the Linux kernel when reference counting pages, leading to potential use-after-free issues. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2019-11487) Jann Horn discovered that a race condition existed in the Linux kernel when performing core dumps. A local attacker could use this to cause a denial of service (system crash) or expose sensitive information. (CVE-2019-11599) It was discovered that the ext4 file system implementation in the Linux kernel did not properly zero out memory in some situations. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2019-11833) It was discovered that the Bluetooth Human Interface Device Protocol (HIDP) implementation in the Linux kernel did not properly verify strings were NULL terminated in certain situations. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2019-11884)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/linux-image-5.0.0-23-generic<5.0.0-23.24~18.04.1
5.0.0-23.24~18.04.1
=18.04
All of
ubuntu/linux-image-5.0.0-23-generic-lpae<5.0.0-23.24~18.04.1
5.0.0-23.24~18.04.1
=18.04
All of
ubuntu/linux-image-5.0.0-23-lowlatency<5.0.0-23.24~18.04.1
5.0.0-23.24~18.04.1
=18.04
All of
ubuntu/linux-image-generic-hwe-18.04<5.0.0.23.80
5.0.0.23.80
=18.04
All of
ubuntu/linux-image-generic-lpae-hwe-18.04<5.0.0.23.80
5.0.0.23.80
=18.04
All of
ubuntu/linux-image-lowlatency-hwe-18.04<5.0.0.23.80
5.0.0.23.80
=18.04
All of
ubuntu/linux-image-snapdragon-hwe-18.04<5.0.0.23.80
5.0.0.23.80
=18.04
All of
ubuntu/linux-image-virtual-hwe-18.04<5.0.0.23.80
5.0.0.23.80
=18.04

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is USN-4069-2?

    USN-4069-2 is a vulnerability in the Linux kernel for Ubuntu 18.04 LTS.

  • How does USN-4069-2 affect Ubuntu 18.04?

    USN-4069-2 affects Ubuntu 18.04 LTS by introducing vulnerabilities in the Linux kernel.

  • What is the severity of USN-4069-2?

    The severity of USN-4069-2 is not specified.

  • How can I fix USN-4069-2?

    To fix USN-4069-2, update the Linux kernel to version 5.0.0-23.24~18.04.1 or later.

  • Where can I find more information about USN-4069-2?

    You can find more information about USN-4069-2 on the Ubuntu security website.

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