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AUSCERT External Security Bulletin Redistribution
ESB-2020.2206
USN-4404-2: Linux kernel vulnerabilities
26 June 2020
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AusCERT Security Bulletin Summary
---------------------------------
Product: kernel
Publisher: Ubuntu
Operating System: Windows
UNIX variants (UNIX, Linux, OSX)
Ubuntu
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
Increased Privileges -- Existing Account
Denial of Service -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2020-5973 CVE-2020-5967 CVE-2020-5963
Original Bulletin:
https://usn.ubuntu.com/4404-2/
https://usn.ubuntu.com/4404-1/
Comment: This bulletin contains two (2) Ubuntu security advisories.
This advisory references vulnerabilities in products which run on
platforms other than Ubuntu. It is recommended that administrators
running kernel check for an updated version of the software for
their operating system.
- --------------------------BEGIN INCLUDED TEXT--------------------
USN-4404-2: Linux kernel vulnerabilities
25 June 2020
linux kernel vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 20.04 LTS
o Ubuntu 19.10
o Ubuntu 18.04 LTS
Summary
Several security issues were fixed in the NVIDIA graphics driver kernel
modules.
Software Description
o linux - Linux kernel
o linux-aws - Linux kernel for Amazon Web Services (AWS) systems
o linux-azure - Linux kernel for Microsoft Azure Cloud systems
o linux-gcp - Linux kernel for Google Cloud Platform (GCP) systems
o linux-oracle - Linux kernel for Oracle Cloud systems
o linux-aws-5.3 - Linux kernel for Amazon Web Services (AWS) systems
o linux-azure-5.3 - Linux kernel for Microsoft Azure Cloud systems
o linux-gcp-5.3 - Linux kernel for Google Cloud Platform (GCP) systems
o linux-hwe - Linux hardware enablement (HWE) kernel
o linux-oem - Linux kernel for OEM systems
o linux-oem-osp1 - Linux kernel for OEM systems
o 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
o USN-4404-1
o CVE-2020-5963
o CVE-2020-5967
o CVE-2020-5973
- ----------------------------------------------------------------------------
USN-4404-1: NVIDIA graphics drivers vulnerabilities
25 June 2020
nvidia-graphics-drivers-390, nvidia-graphics-drivers-440 vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 20.04 LTS
o Ubuntu 19.10
o Ubuntu 18.04 LTS
Summary
Several security issues were fixed in NVIDIA graphics drivers.
Software Description
o nvidia-graphics-drivers-390 - NVIDIA binary X.Org driver
o nvidia-graphics-drivers-440 - NVIDIA binary X.Org driver
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
xserver-xorg-video-nvidia-390 - 390.138-0ubuntu0.20.04.1
xserver-xorg-video-nvidia-440 - 440.100-0ubuntu0.20.04.1
Ubuntu 19.10
xserver-xorg-video-nvidia-390 - 390.138-0ubuntu0.19.10.1
xserver-xorg-video-nvidia-440 - 440.100-0ubuntu0.19.10.1
Ubuntu 18.04 LTS
xserver-xorg-video-nvidia-390 - 390.138-0ubuntu0.18.04.1
xserver-xorg-video-nvidia-440 - 440.100-0ubuntu0.18.04.1
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.
References
o CVE-2020-5963
o CVE-2020-5967
o CVE-2020-5973
- --------------------------END INCLUDED TEXT--------------------
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