CWE
416 362
Advisory Published

USN-4068-1: Linux kernel vulnerabilities

First published: Tue Jul 23 2019(Updated: )

Adam Zabrocki discovered that the Intel i915 kernel mode graphics driver in the Linux kernel did not properly restrict mmap() ranges in some situations. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2019-11085) It was discovered that a race condition leading to a use-after-free existed in the Reliable Datagram Sockets (RDS) protocol implementation in the Linux kernel. The RDS protocol is disabled via blocklist by default in Ubuntu. If enabled, a local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2019-11815) 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-4.15.0-1018-oracle<4.15.0-1018.20
4.15.0-1018.20
=18.04
All of
ubuntu/linux-image-4.15.0-1037-gcp<4.15.0-1037.39
4.15.0-1037.39
=18.04
All of
ubuntu/linux-image-4.15.0-1039-kvm<4.15.0-1039.39
4.15.0-1039.39
=18.04
All of
ubuntu/linux-image-4.15.0-1041-raspi2<4.15.0-1041.44
4.15.0-1041.44
=18.04
All of
ubuntu/linux-image-4.15.0-1044-aws<4.15.0-1044.46
4.15.0-1044.46
=18.04
All of
ubuntu/linux-image-4.15.0-1058-snapdragon<4.15.0-1058.64
4.15.0-1058.64
=18.04
All of
ubuntu/linux-image-4.15.0-55-generic<4.15.0-55.60
4.15.0-55.60
=18.04
All of
ubuntu/linux-image-4.15.0-55-generic-lpae<4.15.0-55.60
4.15.0-55.60
=18.04
All of
ubuntu/linux-image-4.15.0-55-lowlatency<4.15.0-55.60
4.15.0-55.60
=18.04
All of
ubuntu/linux-image-aws<4.15.0.1044.43
4.15.0.1044.43
=18.04
All of
ubuntu/linux-image-gcp<4.15.0.1037.39
4.15.0.1037.39
=18.04
All of
ubuntu/linux-image-generic<4.15.0.55.57
4.15.0.55.57
=18.04
All of
ubuntu/linux-image-generic-lpae<4.15.0.55.57
4.15.0.55.57
=18.04
All of
ubuntu/linux-image-kvm<4.15.0.1039.39
4.15.0.1039.39
=18.04
All of
ubuntu/linux-image-lowlatency<4.15.0.55.57
4.15.0.55.57
=18.04
All of
ubuntu/linux-image-oracle<4.15.0.1018.21
4.15.0.1018.21
=18.04
All of
ubuntu/linux-image-raspi2<4.15.0.1041.39
4.15.0.1041.39
=18.04
All of
ubuntu/linux-image-snapdragon<4.15.0.1058.61
4.15.0.1058.61
=18.04
All of
ubuntu/linux-image-virtual<4.15.0.55.57
4.15.0.55.57
=18.04

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the vulnerability in USN-4068-1?

    The vulnerability in USN-4068-1 is CVE-2019-11085, which is a kernel mode graphics driver vulnerability in the Intel i915 driver in the Linux kernel.

  • How can a local attacker exploit CVE-2019-11085?

    A local attacker can exploit CVE-2019-11085 by causing a denial of service (system crash) or possibly executing arbitrary code through the mmap() function.

  • Which versions of Ubuntu are affected by the vulnerability in USN-4068-1?

    The vulnerability in USN-4068-1 affects Ubuntu 18.04.

  • How do I fix the vulnerability in USN-4068-1?

    To fix the vulnerability in USN-4068-1, update your system to the specified kernel versions: linux-image-4.15.0-1018-oracle (4.15.0-1018.20), linux-image-4.15.0-1037-gcp (4.15.0-1037.39), linux-image-4.15.0-1039-kvm (4.15.0-1039.39), linux-image-4.15.0-1041-raspi2 (4.15.0-1041.44), linux-image-4.15.0-1044-aws (4.15.0-1044.46), linux-image-4.15.0-1058-snapdragon (4.15.0-1058.64), linux-image-4.15.0-55-generic (4.15.0-55.60), linux-image-4.15.0-55-generic-lpae (4.15.0-55.60), linux-image-4.15.0-55-lowlatency (4.15.0-55.60), linux-image-aws (4.15.0.1044.43), linux-image-gcp (4.15.0.1037.39), linux-image-generic (4.15.0.55.57), linux-image-generic-lpae (4.15.0.55.57), linux-image-kvm (4.15.0.1039.39), linux-image-lowlatency (4.15.0.55.57), linux-image-oracle (4.15.0.1018.21), linux-image-raspi2 (4.15.0.1041.39), linux-image-snapdragon (4.15.0.1058.61), linux-image-virtual (4.15.0.55.57).

  • Where can I find more information about USN-4068-1?

    You can find more information about USN-4068-1 and the associated vulnerabilities on the Ubuntu website.

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