CWE
190 416 362
Advisory Published

USN-4069-1: Linux kernel vulnerabilities

First published: Tue Jul 23 2019(Updated: )

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-gke<5.0.0.1011.11
5.0.0.1011.11
=19.04
All of
ubuntu/linux-image-5.0.0-1017-snapdragon<5.0.0-1017.18
5.0.0-1017.18
=19.04
All of
ubuntu/linux-image-5.0.0-21-generic<5.0.0-21.22
5.0.0-21.22
=19.04
All of
ubuntu/linux-image-5.0.0-1013-raspi2<5.0.0-1013.13
5.0.0-1013.13
=19.04
All of
ubuntu/linux-image-gcp<5.0.0.1011.11
5.0.0.1011.11
=19.04
All of
ubuntu/linux-image-5.0.0-1012-azure<5.0.0-1012.12
5.0.0-1012.12
=19.04
All of
ubuntu/linux-image-azure<5.0.0.1012.11
5.0.0.1012.11
=19.04
All of
ubuntu/linux-image-5.0.0-21-generic-lpae<5.0.0-21.22
5.0.0-21.22
=19.04
All of
ubuntu/linux-image-generic<5.0.0.21.22
5.0.0.21.22
=19.04
All of
ubuntu/linux-image-virtual<5.0.0.21.22
5.0.0.21.22
=19.04
All of
ubuntu/linux-image-5.0.0-21-lowlatency<5.0.0-21.22
5.0.0-21.22
=19.04
All of
ubuntu/linux-image-raspi2<5.0.0.1013.10
5.0.0.1013.10
=19.04
All of
ubuntu/linux-image-aws<5.0.0.1011.11
5.0.0.1011.11
=19.04
All of
ubuntu/linux-image-generic-lpae<5.0.0.21.22
5.0.0.21.22
=19.04
All of
ubuntu/linux-image-snapdragon<5.0.0.1017.10
5.0.0.1017.10
=19.04
All of
ubuntu/linux-image-5.0.0-1011-kvm<5.0.0-1011.12
5.0.0-1011.12
=19.04
All of
ubuntu/linux-image-kvm<5.0.0.1011.11
5.0.0.1011.11
=19.04
All of
ubuntu/linux-image-5.0.0-1011-gcp<5.0.0-1011.11
5.0.0-1011.11
=19.04
All of
ubuntu/linux-image-lowlatency<5.0.0.21.22
5.0.0.21.22
=19.04
All of
ubuntu/linux-image-5.0.0-1011-aws<5.0.0-1011.12
5.0.0-1011.12
=19.04

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the vulnerability ID for this Linux kernel vulnerability?

    The vulnerability ID for this Linux kernel vulnerability is CVE-2019-11487.

  • What is the impact of the vulnerability?

    The vulnerability could lead to potential use-after-free issues, causing a denial of service (system crash) or possibly arbitrary code execution.

  • Which version of the Linux kernel is affected by this vulnerability?

    The Linux kernel versions affected by this vulnerability are 5.0.0.1011.11, 5.0.0-1017.18, 5.0.0-21.22, 5.0.0-1013.13, and 5.0.0.1012.11.

  • How do I fix this Linux kernel vulnerability?

    To fix this vulnerability, update your Linux kernel to version 5.0.0.1011.11, 5.0.0-1017.18, 5.0.0-21.22, 5.0.0-1013.13, or 5.0.0.1012.11.

  • Where can I find more information about this vulnerability?

    You can find more information about this vulnerability at the following references: [CVE-2019-11487](https://ubuntu.com/security/CVE-2019-11487), [CVE-2019-11599](https://ubuntu.com/security/CVE-2019-11599), [CVE-2019-11833](https://ubuntu.com/security/CVE-2019-11833).

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