USN-4404-2: Linux kernel vulnerabilities

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-aws – 5.4.0-1017.17; linux-image-5.4.0-1018-gcp – 5.4.0-1018.18; linux-image-5.4.0-1018-oracle – 5.4.0-1018.18; linux-image-5.4.0-1019-azure – 5.4.0-1019.19; linux-image-5.4.0-39-generic – 5.4.0-39.43; linux-image-5.4.0-39-generic-lpae – 5.4.0-39.43; linux-image-5.4.0-39-lowlatency – 5.4.0-39.43; 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-oracle – 5.3.0-1027.29; linux-image-5.3.0-1028-aws – 5.3.0-1028.30; linux-image-5.3.0-1029-gcp – 5.3.0-1029.31; linux-image-5.3.0-61-generic – 5.3.0-61.55; linux-image-5.3.0-61-generic-lpae – 5.3.0-61.55; linux-image-5.3.0-61-lowlatency – 5.3.0-61.55; linux-image-5.3.0-61-snapdragon – 5.3.0-61.55; 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-oracle – 4.15.0-1047.51; linux-image-4.15.0-1076-aws – 4.15.0-1076.80; linux-image-4.15.0-108-generic – 4.15.0-108.109; linux-image-4.15.0-108-generic-lpae – 4.15.0-108.109; linux-image-4.15.0-108-lowlatency – 4.15.0-108.109; linux-image-4.15.0-1090-oem – 4.15.0-1090.100; linux-image-5.0.0-1062-oem-osp1 – 5.0.0-1062.67; linux-image-5.3.0-1027-oracle – 5.3.0-1027.29~18.04.1; linux-image-5.3.0-1028-aws – 5.3.0-1028.30~18.04.1; linux-image-5.3.0-1029-gcp – 5.3.0-1029.31~18.04.1; linux-image-5.3.0-1031-azure – 5.3.0-1031.32~18.04.1; linux-image-5.3.0-61-generic – 5.3.0-61.55~18.04.1; linux-image-5.3.0-61-generic-lpae – 5.3.0-61.55~18.04.1; linux-image-5.3.0-61-lowlatency – 5.3.0-61.55~18.04.1; 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

Source: USN-4404-2: Linux kernel vulnerabilities

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