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Ubuntu Security Notice USN-4114-1

Ubuntu Security Notice USN-4114-1
Posted Sep 2, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4114-1 - Amit Klein and Benny Pinkas discovered that the Linux kernel did not sufficiently randomize IP ID values generated for connectionless networking protocols. A remote attacker could use this to track particular Linux devices. Praveen Pandey discovered that the Linux kernel did not properly validate sent signals in some situations on PowerPC systems with transactional memory disabled. A local attacker could use this to cause a denial of service. Various other issues were also addressed.

tags | advisory, remote, denial of service, kernel, local, protocol
systems | linux, ubuntu
advisories | CVE-2019-10638, CVE-2019-13648, CVE-2019-14283, CVE-2019-14284, CVE-2019-3900
MD5 | 635859f0d4e4c0dfd65dacd8d57d3a34

Ubuntu Security Notice USN-4114-1

Change Mirror Download
=========================================================================
Ubuntu Security Notice USN-4114-1
September 02, 2019

linux, linux-azure, linux-gcp, linux-gke-5.0, linux-hwe, linux-kvm,
linux-raspi2, linux-snapdragon vulnerabilities
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 19.04
- Ubuntu 18.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- linux: Linux kernel
- linux-azure: Linux kernel for Microsoft Azure Cloud systems
- linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems
- linux-kvm: Linux kernel for cloud environments
- linux-raspi2: Linux kernel for Raspberry Pi 2
- linux-snapdragon: Linux kernel for Snapdragon processors
- linux-gke-5.0: Linux kernel for Google Container Engine (GKE) systems
- linux-hwe: Linux hardware enablement (HWE) kernel

Details:

Amit Klein and Benny Pinkas discovered that the Linux kernel did not
sufficiently randomize IP ID values generated for connectionless networking
protocols. A remote attacker could use this to track particular Linux
devices. (CVE-2019-10638)

Praveen Pandey discovered that the Linux kernel did not properly validate
sent signals in some situations on PowerPC systems with transactional
memory disabled. A local attacker could use this to cause a denial of
service. (CVE-2019-13648)

It was discovered that the floppy driver in the Linux kernel did not
properly validate meta data, leading to a buffer overread. A local attacker
could use this to cause a denial of service (system crash).
(CVE-2019-14283)

It was discovered that the floppy driver in the Linux kernel did not
properly validate ioctl() calls, leading to a division-by-zero. A local
attacker could use this to cause a denial of service (system crash).
(CVE-2019-14284)

Jason Wang discovered that an infinite loop vulnerability existed in the
virtio net driver in the Linux kernel. A local attacker in a guest VM could
possibly use this to cause a denial of service in the host system.
(CVE-2019-3900)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 19.04:
linux-image-5.0.0-1015-gcp 5.0.0-1015.15
linux-image-5.0.0-1015-kvm 5.0.0-1015.16
linux-image-5.0.0-1015-raspi2 5.0.0-1015.15
linux-image-5.0.0-1018-azure 5.0.0-1018.19
linux-image-5.0.0-1019-snapdragon 5.0.0-1019.20
linux-image-5.0.0-27-generic 5.0.0-27.28
linux-image-5.0.0-27-generic-lpae 5.0.0-27.28
linux-image-5.0.0-27-lowlatency 5.0.0-27.28
linux-image-azure 5.0.0.1018.17
linux-image-gcp 5.0.0.1015.41
linux-image-generic 5.0.0.27.28
linux-image-generic-lpae 5.0.0.27.28
linux-image-gke 5.0.0.1015.41
linux-image-kvm 5.0.0.1015.15
linux-image-lowlatency 5.0.0.27.28
linux-image-raspi2 5.0.0.1015.12
linux-image-snapdragon 5.0.0.1019.12
linux-image-virtual 5.0.0.27.28

Ubuntu 18.04 LTS:
linux-image-5.0.0-1015-gke 5.0.0-1015.15~18.04.1
linux-image-5.0.0-1018-azure 5.0.0-1018.19~18.04.1
linux-image-5.0.0-27-generic 5.0.0-27.28~18.04.1
linux-image-5.0.0-27-generic-lpae 5.0.0-27.28~18.04.1
linux-image-5.0.0-27-lowlatency 5.0.0-27.28~18.04.1
linux-image-azure 5.0.0.1018.28
linux-image-generic-hwe-18.04 5.0.0.27.84
linux-image-generic-lpae-hwe-18.04 5.0.0.27.84
linux-image-gke-5.0 5.0.0.1015.5
linux-image-lowlatency-hwe-18.04 5.0.0.27.84
linux-image-snapdragon-hwe-18.04 5.0.0.27.84
linux-image-virtual-hwe-18.04 5.0.0.27.84

After a standard system update you need to reboot your computer to make
all the necessary changes.

ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
linux-powerpc), a standard system upgrade will automatically perform
this as well.

References:
https://usn.ubuntu.com/4114-1
CVE-2019-10638, CVE-2019-13648, CVE-2019-14283, CVE-2019-14284,
CVE-2019-3900

Package Information:
https://launchpad.net/ubuntu/+source/linux/5.0.0-27.28
https://launchpad.net/ubuntu/+source/linux-azure/5.0.0-1018.19
https://launchpad.net/ubuntu/+source/linux-gcp/5.0.0-1015.15
https://launchpad.net/ubuntu/+source/linux-kvm/5.0.0-1015.16
https://launchpad.net/ubuntu/+source/linux-raspi2/5.0.0-1015.15
https://launchpad.net/ubuntu/+source/linux-snapdragon/5.0.0-1019.20
https://launchpad.net/ubuntu/+source/linux-azure/5.0.0-1018.19~18.04.1
https://launchpad.net/ubuntu/+source/linux-gke-5.0/5.0.0-1015.15~18.04.1
https://launchpad.net/ubuntu/+source/linux-hwe/5.0.0-27.28~18.04.1
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