CWE
416
Advisory Published

USN-3468-1: Linux kernel vulnerabilities

First published: Tue Oct 31 2017(Updated: )

It was discovered that the KVM subsystem in the Linux kernel did not properly bound guest IRQs. A local attacker in a guest VM could use this to cause a denial of service (host system crash). (CVE-2017-1000252) It was discovered that the Flash-Friendly File System (f2fs) implementation in the Linux kernel did not properly validate superblock metadata. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-10663) Anthony Perard discovered that the Xen virtual block driver did not properly initialize some data structures before passing them to user space. A local attacker in a guest VM could use this to expose sensitive information from the host OS or other guest VMs. (CVE-2017-10911) It was discovered that a use-after-free vulnerability existed in the POSIX message queue implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-11176) Dave Chinner discovered that the XFS filesystem did not enforce that the realtime inode flag was settable only on filesystems on a realtime device. A local attacker could use this to cause a denial of service (system crash). (CVE-2017-14340)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/linux-image-generic-lpae<4.10.0.38.38
4.10.0.38.38
=17.04
All of
ubuntu/linux-image-4.10.0-38-generic<4.10.0-38.42
4.10.0-38.42
=17.04
All of
ubuntu/linux-image-4.10.0-38-generic-lpae<4.10.0-38.42
4.10.0-38.42
=17.04
All of
ubuntu/linux-image-4.10.0-1020-raspi2<4.10.0-1020.23
4.10.0-1020.23
=17.04
All of
ubuntu/linux-image-4.10.0-38-lowlatency<4.10.0-38.42
4.10.0-38.42
=17.04
All of
ubuntu/linux-image-generic<4.10.0.38.38
4.10.0.38.38
=17.04
All of
ubuntu/linux-image-lowlatency<4.10.0.38.38
4.10.0.38.38
=17.04
All of
ubuntu/linux-image-raspi2<4.10.0.1020.21
4.10.0.1020.21
=17.04

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the severity of USN-3468-1?

    The severity of USN-3468-1 is high.

  • How can a local attacker exploit CVE-2017-1000252?

    A local attacker in a guest VM can exploit CVE-2017-1000252 to cause a denial of service (host system crash).

  • Which Linux kernel versions are affected by USN-3468-1?

    Linux kernel versions 4.10.0.38.38, 4.10.0-38.42, 4.10.0-1020.23, and 4.10.0-38.42-lowlatency are affected by USN-3468-1.

  • How can I fix the Linux kernel vulnerabilities in USN-3468-1?

    To fix the Linux kernel vulnerabilities in USN-3468-1, update to version 4.10.0.38.38 or later.

  • Where can I find more information about USN-3468-1?

    You can find more information about USN-3468-1 on the Ubuntu security website.

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