Ubuntu has notified today of vulnerabilities in Linux Kernel.
Packages then need updates as the following list:
linux – Linux kernel
linux-aws – Linux kernel for Amazon Web Services (AWS) systems
linux-aws-5.4 – Linux kernel for Amazon Web Services (AWS) systems
linux-azure – Linux kernel for Microsoft Azure Cloud systems
linux-azure-5.4 – Linux kernel for Microsoft Azure cloud systems
linux-gcp – Linux kernel for Google Cloud Platform (GCP) systems
linux-gcp-5.4 – Linux kernel for Google Cloud Platform (GCP) systems
linux-hwe-5.4 – Linux hardware enablement (HWE) kernel
linux-kvm – Linux kernel for cloud environments
linux-oracle – Linux kernel for Oracle Cloud systems
linux-oracle-5.4 – Linux kernel for Oracle Cloud systems
linux-raspi – Linux kernel for Raspberry Pi (V8) systems
linux-raspi-5.4 – Linux kernel for Raspberry Pi (V8) systems
It was discovered that the AMD Cryptographic Coprocessor device driver in
the Linux kernel did not properly deallocate memory in some situations. A
local attacker could use this to cause a denial of service (memory
exhaustion). (CVE-2019-18808)
It was discovered that the Conexant 23885 TV card device driver for the
Linux kernel did not properly deallocate memory in some error conditions. A
local attacker could use this to cause a denial of service (memory
exhaustion). (CVE-2019-19054)
It was discovered that the VFIO PCI driver in the Linux kernel did not
properly handle attempts to access disabled memory spaces. A local attacker
could use this to cause a denial of service (system crash).
(CVE-2020-12888)
It was discovered that the state of network RNG in the Linux kernel was
potentially observable. A remote attacker could use this to expose
sensitive information. (CVE-2020-16166)
It was discovered that the NFS client implementation in the Linux kernel
did not properly perform bounds checking before copying security labels in
some situations. A local attacker could use this to cause a denial of
service (system crash) or possibly execute arbitrary code. (CVE-2020-25212).
The problem can be corrected by updating your system to the following package versions:
Ubuntu 20.04
linux-image-5.4.0-1019-raspi – 5.4.0-1019.21
linux-image-5.4.0-1024-kvm – 5.4.0-1024.24
linux-image-5.4.0-1025-aws – 5.4.0-1025.25
linux-image-5.4.0-1025-gcp– 5.4.0-1025.25
linux-image-5.4.0-1025-oracle- 5.4.0-1025.25
linux-image-5.4.0-1026-azure – 5.4.0-1026.26
linux-image-5.4.0-48-generic – 5.4.0-48.52
linux-image-5.4.0-48-generic–lpae
linux-image-aws – 5.4.0.1025.26
linux-image-azure – 5.4.0.1026.25
linux-image-gcp – 5.4.0.1025.22
linux-image-generic – 5.4.0.48.51
linux-image-generic-lpae – 5.4.0.48.51
linux-image-gke – 5.4.0.1025.22
linux-image-kvm – 5.4.0.1024.22
linux-image-lowlatency – 5.4.0.48.51
linux-image-oem – 5.4.0.48.51
linux-image-oem-osp1 – 5.4.0.48.51
linux-image-oracle – 5.4.0.1025.22
linux-image-raspi – 5.4.0.1019.54
linux-image-raspi2 – 5.4.0.1019.54
linux-image-virtual – 5.4.0.48.51
Ubuntu 18.04
linux-image-5.4.0-1019-raspi – 5.4.0-1019.21~18.04.1
linux-image-5.4.0-1025-aws – 5.4.0-1025.25~18.04.1
linux-image-5.4.0-1025-gcp – 5.4.0-1025.25~18.04.1
linux-image-5.4.0-1025-oracle – 5.4.0-1025.25~18.04.1
linux-image-5.4.0-1026-azure – 5.4.0-1026.26~18.04.1
linux-image-5.4.0-48-generic – 5.4.0-48.52~18.04.1
linux-image-5.4.0-48-generic-lpae – 5.4.0-48.52~18.04.1
linux-image-5.4.0-48-lowlatency – 5.4.0-48.52~18.04.1
linux-image-aws – 5.4.0.1025.10
linux-image-azure – 5.4.0.1026.9
linux-image-gcp – 5.4.0.1025.13
linux-image-generic-hwe-18.04 – 5.4.0.48.52~18.04.42
linux-image-generic-lpae-hwe-18.04 – 5.4.0.48.52~18.04.42
linux-image-lowlatency-hwe-18.04 – 5.4.0.48.52~18.04.42
linux-image-oracle – 5.4.0.1025.9
linux-image-raspi-hwe-18.04 – 5.4.0.1019.23
linux-image-snapdragon-hwe-18.04 – 5.4.0.48.52~18.04.42
linux-image-virtual-hwe-18.04 – 5.4.0.48.52~18.04.42
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.