25 June 2020

linux kernel vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 20.04 LTS
  • Ubuntu 19.10
  • Ubuntu 18.04 LTS

Summary

Several security issues were fixed in the NVIDIA graphics driver
kernel modules.

Software Description

  • linux – Linux kernel
  • linux-aws – Linux kernel for Amazon Web Services (AWS) systems
  • linux-azure – Linux kernel for Microsoft Azure Cloud systems
  • linux-gcp – Linux kernel for Google Cloud Platform (GCP) systems
  • linux-oracle – Linux kernel for Oracle Cloud systems
  • linux-aws-5.3 – Linux kernel for Amazon Web Services (AWS) systems
  • linux-azure-5.3 – Linux kernel for Microsoft Azure Cloud systems
  • linux-gcp-5.3 – Linux kernel for Google Cloud Platform (GCP) systems
  • linux-hwe – Linux hardware enablement (HWE) kernel
  • linux-oem – Linux kernel for OEM systems
  • linux-oem-osp1 – Linux kernel for OEM systems
  • linux-oracle-5.3 – Linux kernel for Oracle Cloud systems

Details

USN-4404-1 fixed vulnerabilities in the NVIDIA graphics drivers.
This update provides the corresponding updates for the NVIDIA Linux
DKMS kernel modules.

Original advisory details:

Thomas E. Carroll discovered that the NVIDIA Cuda grpahics driver did not
properly perform access control when performing IPC. An attacker could use
this to cause a denial of service or possibly execute arbitrary code.
(CVE-2020-5963)

It was discovered that the UVM driver in the NVIDIA graphics driver
contained a race condition. A local attacker could use this to cause a
denial of service. (CVE-2020-5967)

It was discovered that the NVIDIA virtual GPU guest drivers contained
an unspecified vulnerability that could potentially lead to privileged
operation execution. An attacker could use this to cause a denial of
service. (CVE-2020-5973)

Update instructions

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

Ubuntu 20.04 LTS
linux-image-5.4.0-1017-aws5.4.0-1017.17
linux-image-5.4.0-1018-gcp5.4.0-1018.18
linux-image-5.4.0-1018-oracle5.4.0-1018.18
linux-image-5.4.0-1019-azure5.4.0-1019.19
linux-image-5.4.0-39-generic5.4.0-39.43
linux-image-5.4.0-39-generic-lpae5.4.0-39.43
linux-image-5.4.0-39-lowlatency5.4.0-39.43
linux-image-aws – 5.4.0.1017.18
linux-image-azure – 5.4.0.1019.18
linux-image-gcp – 5.4.0.1018.16
linux-image-generic – 5.4.0.39.42
linux-image-generic-hwe-20.04 – 5.4.0.39.42
linux-image-generic-lpae – 5.4.0.39.42
linux-image-generic-lpae-hwe-20.04 – 5.4.0.39.42
linux-image-gke – 5.4.0.1018.16
linux-image-lowlatency – 5.4.0.39.42
linux-image-lowlatency-hwe-20.04 – 5.4.0.39.42
linux-image-oem – 5.4.0.39.42
linux-image-oem-osp1 – 5.4.0.39.42
linux-image-oracle – 5.4.0.1018.16
linux-image-virtual – 5.4.0.39.42
linux-image-virtual-hwe-20.04 – 5.4.0.39.42
Ubuntu 19.10
linux-image-5.3.0-1027-oracle5.3.0-1027.29
linux-image-5.3.0-1028-aws5.3.0-1028.30
linux-image-5.3.0-1029-gcp5.3.0-1029.31
linux-image-5.3.0-61-generic5.3.0-61.55
linux-image-5.3.0-61-generic-lpae5.3.0-61.55
linux-image-5.3.0-61-lowlatency5.3.0-61.55
linux-image-5.3.0-61-snapdragon5.3.0-61.55
linux-image-aws – 5.3.0.1028.38
linux-image-gcp – 5.3.0.1029.39
linux-image-generic – 5.3.0.61.51
linux-image-generic-lpae – 5.3.0.61.51
linux-image-gke – 5.3.0.1029.39
linux-image-lowlatency – 5.3.0.61.51
linux-image-oracle – 5.3.0.1027.42
linux-image-snapdragon – 5.3.0.61.51
linux-image-virtual – 5.3.0.61.51
Ubuntu 18.04 LTS
linux-image-4.15.0-1047-oracle4.15.0-1047.51
linux-image-4.15.0-1076-aws4.15.0-1076.80
linux-image-4.15.0-108-generic4.15.0-108.109
linux-image-4.15.0-108-generic-lpae4.15.0-108.109
linux-image-4.15.0-108-lowlatency4.15.0-108.109
linux-image-4.15.0-1090-oem4.15.0-1090.100
linux-image-5.0.0-1062-oem-osp15.0.0-1062.67
linux-image-5.3.0-1027-oracle5.3.0-1027.29~18.04.1
linux-image-5.3.0-1028-aws5.3.0-1028.30~18.04.1
linux-image-5.3.0-1029-gcp5.3.0-1029.31~18.04.1
linux-image-5.3.0-1031-azure5.3.0-1031.32~18.04.1
linux-image-5.3.0-61-generic5.3.0-61.55~18.04.1
linux-image-5.3.0-61-generic-lpae5.3.0-61.55~18.04.1
linux-image-5.3.0-61-lowlatency5.3.0-61.55~18.04.1
linux-image-aws – 5.3.0.1028.26
linux-image-aws-lts-18.04 – 4.15.0.1076.78
linux-image-azure – 5.3.0.1031.27
linux-image-gcp – 5.3.0.1029.23
linux-image-generic – 4.15.0.108.96
linux-image-generic-hwe-18.04 – 5.3.0.61.114
linux-image-generic-lpae – 4.15.0.108.96
linux-image-generic-lpae-hwe-18.04 – 5.3.0.61.114
linux-image-gkeop-5.3 – 5.3.0.61.114
linux-image-lowlatency – 4.15.0.108.96
linux-image-lowlatency-hwe-18.04 – 5.3.0.61.114
linux-image-oem – 4.15.0.1090.93
linux-image-oem-osp1 – 5.0.0.1062.60
linux-image-oracle – 5.3.0.1027.24
linux-image-oracle-edge – 5.3.0.1027.24
linux-image-oracle-lts-18.04 – 4.15.0.1047.56
linux-image-powerpc-e500mc – 4.15.0.108.96
linux-image-powerpc-smp – 4.15.0.108.96
linux-image-powerpc64-emb – 4.15.0.108.96
linux-image-powerpc64-smp – 4.15.0.108.96
linux-image-snapdragon-hwe-18.04 – 5.3.0.61.114
linux-image-virtual – 4.15.0.108.96
linux-image-virtual-hwe-18.04 – 5.3.0.61.114

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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



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