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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2021.0105.3 USN-4689-2: Linux kernel vulnerabilities 21 January 2021 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Linux kernel Publisher: Ubuntu Operating System: Ubuntu Impact/Access: Increased Privileges -- Existing Account Denial of Service -- Existing Account Access Confidential Data -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2021-1056 CVE-2021-1053 CVE-2021-1052 Reference: ESB-2021.0097 Original Bulletin: https://ubuntu.com/security/notices/USN-4689-2 https://ubuntu.com/security/notices/USN-4689-3 https://ubuntu.com/security/notices/USN-4689-4 Comment: This bulletin contains three (3) Ubuntu security advisories. Revision History: January 21 2021: Vendor released update USN-4689-4 January 21 2021: Vendor minor update (USN-4689-3) details upstream release January 12 2021: Initial Release - --------------------------BEGIN INCLUDED TEXT-------------------- USN-4689-2: Linux kernel vulnerabilities 11 January 2021 Several security issues were fixed in the Linux kernel. Releases o Ubuntu 20.10 o Ubuntu 20.04 LTS o Ubuntu 18.04 LTS Packages o linux - Linux kernel o linux-aws - Linux kernel for Amazon Web Services (AWS) systems o linux-aws-5.4 - Linux kernel for Amazon Web Services (AWS) systems o linux-azure - Linux kernel for Microsoft Azure Cloud systems o linux-azure-4.15 - Linux kernel for Microsoft Azure Cloud systems o linux-azure-5.4 - Linux kernel for Microsoft Azure cloud systems o linux-gcp - Linux kernel for Google Cloud Platform (GCP) systems o linux-gcp-5.4 - Linux kernel for Google Cloud Platform (GCP) systems o linux-hwe-5.4 - Linux hardware enablement (HWE) kernel o linux-hwe-5.8 - Linux hardware enablement (HWE) kernel o linux-oem-5.6 - Linux kernel for OEM systems o linux-oracle - Linux kernel for Oracle Cloud systems o linux-oracle-5.4 - Linux kernel for Oracle Cloud systems Details USN-4689-1 fixed vulnerabilities in the NVIDIA graphics drivers. This update provides the corresponding updates for the NVIDIA Linux DKMS kernel modules. Original advisory details: It was discovered that the NVIDIA GPU display driver for the Linux kernel contained a vulnerability that allowed user-mode clients to access legacy privileged APIs. A local attacker could use this to cause a denial of service or escalate privileges. (CVE-2021-1052) It was discovered that the NVIDIA GPU display driver for the Linux kernel did not properly validate a pointer received from userspace in some situations. A local attacker could use this to cause a denial of service. (CVE-2021-1053) Xinyuan Lyu discovered that the NVIDIA GPU display driver for the Linux kernel did not properly restrict device-level GPU isolation. A local attacker could use this to cause a denial of service or possibly expose sensitive information. (CVE-2021-1056) Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 20.10 o linux-image-5.8.0-1015-oracle - 5.8.0-1015.16 o linux-image-5.8.0-1016-gcp - 5.8.0-1016.17 o linux-image-5.8.0-1017-azure - 5.8.0-1017.19 o linux-image-5.8.0-1018-aws - 5.8.0-1018.20 o linux-image-5.8.0-36-generic - 5.8.0-36.40 o linux-image-5.8.0-36-lowlatency - 5.8.0-36.40 o linux-image-aws - 5.8.0.1018.20 o linux-image-azure - 5.8.0.1017.17 o linux-image-gcp - 5.8.0.1016.16 o linux-image-generic - 5.8.0.36.40 o linux-image-gke - 5.8.0.1016.16 o linux-image-lowlatency - 5.8.0.36.40 o linux-image-oracle - 5.8.0.1015.15 o linux-image-virtual - 5.8.0.36.40 Ubuntu 20.04 o linux-image-5.4.0-1034-gcp - 5.4.0-1034.37 o linux-image-5.4.0-1035-aws - 5.4.0-1035.37 o linux-image-5.4.0-1035-oracle - 5.4.0-1035.38 o linux-image-5.4.0-1036-azure - 5.4.0-1036.38 o linux-image-5.4.0-60-generic - 5.4.0-60.67 o linux-image-5.4.0-60-lowlatency - 5.4.0-60.67 o linux-image-5.6.0-1042-oem - 5.6.0-1042.46 o linux-image-5.8.0-36-generic - 5.8.0-36.40~20.04.1 o linux-image-5.8.0-36-lowlatency - 5.8.0-36.40~20.04.1 o linux-image-aws - 5.4.0.1035.36 o linux-image-azure - 5.4.0.1036.34 o linux-image-gcp - 5.4.0.1034.43 o linux-image-generic - 5.4.0.60.63 o linux-image-generic-hwe-20.04 - 5.8.0.36.40~20.04.21 o linux-image-lowlatency - 5.4.0.60.63 o linux-image-lowlatency-hwe-20.04 - 5.8.0.36.40~20.04.21 o linux-image-oem - 5.4.0.60.63 o linux-image-oem-20.04 - 5.6.0.1042.38 o linux-image-oem-osp1 - 5.4.0.60.63 o linux-image-oracle - 5.4.0.1035.32 o linux-image-virtual - 5.4.0.60.63 o linux-image-virtual-hwe-20.04 - 5.8.0.36.40~20.04.21 Ubuntu 18.04 o linux-image-4.15.0-1063-oracle - 4.15.0-1063.70 o linux-image-4.15.0-1092-aws - 4.15.0-1092.98 o linux-image-4.15.0-1104-azure - 4.15.0-1104.116 o linux-image-4.15.0-130-generic - 4.15.0-130.134 o linux-image-4.15.0-130-lowlatency - 4.15.0-130.134 o linux-image-5.4.0-1034-gcp - 5.4.0-1034.37~18.04.1 o linux-image-5.4.0-1035-aws - 5.4.0-1035.37~18.04.1 o linux-image-5.4.0-1035-oracle - 5.4.0-1035.38~18.04.1 o linux-image-5.4.0-1036-azure - 5.4.0-1036.38~18.04.1 o linux-image-5.4.0-60-generic - 5.4.0-60.67~18.04.1 o linux-image-5.4.0-60-lowlatency - 5.4.0-60.67~18.04.1 o linux-image-aws - 5.4.0.1035.20 o linux-image-aws-lts-18.04 - 4.15.0.1092.94 o linux-image-azure - 5.4.0.1036.18 o linux-image-azure-lts-18.04 - 4.15.0.1104.77 o linux-image-gcp - 5.4.0.1034.22 o linux-image-generic - 4.15.0.130.117 o linux-image-generic-hwe-18.04 - 5.4.0.60.67~18.04.55 o linux-image-lowlatency - 4.15.0.130.117 o linux-image-lowlatency-hwe-18.04 - 5.4.0.60.67~18.04.55 o linux-image-oem - 5.4.0.60.67~18.04.55 o linux-image-oem-osp1 - 5.4.0.60.67~18.04.55 o linux-image-oracle - 5.4.0.1035.38~18.04.19 o linux-image-oracle-lts-18.04 - 4.15.0.1063.73 o linux-image-virtual - 4.15.0.130.117 o linux-image-virtual-hwe-18.04 - 5.4.0.60.67~18.04.55 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 CVE-2021-1052 o CVE-2021-1053 o CVE-2021-1056 Related notices o USN-4689-1 : xserver-xorg-video-nvidia-460, xserver-xorg-video-nvidia-450, xserver-xorg-video-nvidia-440, nvidia-graphics-drivers-390, xserver-xorg-video-nvidia-390, nvidia-graphics-drivers-450, nvidia-graphics-drivers-460, xserver-xorg-video-nvidia-455 - ------------------------------------------------------------------------------- USN-4689-3: NVIDIA graphics drivers vulnerabilities 20 January 2021 Several security issues were fixed in NVIDIA graphics drivers. Releases o Ubuntu 20.10 o Ubuntu 20.04 LTS o Ubuntu 18.04 LTS Packages o nvidia-graphics-drivers-418-server - NVIDIA Server Driver o nvidia-graphics-drivers-450-server - NVIDIA Server Driver Details It was discovered that the NVIDIA GPU display driver for the Linux kernel contained a vulnerability that allowed user-mode clients to access legacy privileged APIs. A local attacker could use this to cause a denial of service or escalate privileges. ( CVE-2021-1052 ) It was discovered that the NVIDIA GPU display driver for the Linux kernel did not properly validate a pointer received from userspace in some situations. A local attacker could use this to cause a denial of service. ( CVE-2021-1053 ) Xinyuan Lyu discovered that the NVIDIA GPU display driver for the Linux kernel did not properly restrict device-level GPU isolation. A local attacker could use this to cause a denial of service or possibly expose sensitive information. ( CVE-2021-1056 ) Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 20.10 o nvidia-dkms-418-server - 418.181.07-0ubuntu0.20.10.1 o nvidia-dkms-440-server - 450.102.04-0ubuntu0.20.10.1 o nvidia-dkms-450-server - 450.102.04-0ubuntu0.20.10.1 o nvidia-kernel-common-418-server - 418.181.07-0ubuntu0.20.10.1 o nvidia-kernel-common-440-server - 450.102.04-0ubuntu0.20.10.1 o nvidia-kernel-common-450-server - 450.102.04-0ubuntu0.20.10.1 o nvidia-kernel-source-418-server - 418.181.07-0ubuntu0.20.10.1 o nvidia-kernel-source-440-server - 450.102.04-0ubuntu0.20.10.1 o nvidia-kernel-source-450-server - 450.102.04-0ubuntu0.20.10.1 o nvidia-utils-418-server - 418.181.07-0ubuntu0.20.10.1 o nvidia-utils-440-server - 450.102.04-0ubuntu0.20.10.1 o nvidia-utils-450-server - 450.102.04-0ubuntu0.20.10.1 o xserver-xorg-video-nvidia-418-server - 418.181.07-0ubuntu0.20.10.1 o xserver-xorg-video-nvidia-440-server - 450.102.04-0ubuntu0.20.10.1 o xserver-xorg-video-nvidia-450-server - 450.102.04-0ubuntu0.20.10.1 Ubuntu 20.04 o nvidia-dkms-418-server - 418.181.07-0ubuntu0.20.04.1 o nvidia-dkms-440-server - 450.102.04-0ubuntu0.20.04.1 o nvidia-dkms-450-server - 450.102.04-0ubuntu0.20.04.1 o nvidia-kernel-common-418-server - 418.181.07-0ubuntu0.20.04.1 o nvidia-kernel-common-440-server - 450.102.04-0ubuntu0.20.04.1 o nvidia-kernel-common-450-server - 450.102.04-0ubuntu0.20.04.1 o nvidia-kernel-source-418-server - 418.181.07-0ubuntu0.20.04.1 o nvidia-kernel-source-440-server - 450.102.04-0ubuntu0.20.04.1 o nvidia-kernel-source-450-server - 450.102.04-0ubuntu0.20.04.1 o nvidia-utils-418-server - 418.181.07-0ubuntu0.20.04.1 o nvidia-utils-440-server - 450.102.04-0ubuntu0.20.04.1 o nvidia-utils-450-server - 450.102.04-0ubuntu0.20.04.1 o xserver-xorg-video-nvidia-418-server - 418.181.07-0ubuntu0.20.04.1 o xserver-xorg-video-nvidia-440-server - 450.102.04-0ubuntu0.20.04.1 o xserver-xorg-video-nvidia-450-server - 450.102.04-0ubuntu0.20.04.1 Ubuntu 18.04 o nvidia-dkms-418-server - 418.181.07-0ubuntu0.18.04.1 o nvidia-dkms-440-server - 450.102.04-0ubuntu0.18.04.1 o nvidia-dkms-450-server - 450.102.04-0ubuntu0.18.04.1 o nvidia-kernel-common-418-server - 418.181.07-0ubuntu0.18.04.1 o nvidia-kernel-common-440-server - 450.102.04-0ubuntu0.18.04.1 o nvidia-kernel-common-450-server - 450.102.04-0ubuntu0.18.04.1 o nvidia-kernel-source-418-server - 418.181.07-0ubuntu0.18.04.1 o nvidia-kernel-source-440-server - 450.102.04-0ubuntu0.18.04.1 o nvidia-kernel-source-450-server - 450.102.04-0ubuntu0.18.04.1 o nvidia-utils-418-server - 418.181.07-0ubuntu0.18.04.1 o nvidia-utils-440-server - 450.102.04-0ubuntu0.18.04.1 o nvidia-utils-450-server - 450.102.04-0ubuntu0.18.04.1 o xserver-xorg-video-nvidia-418-server - 418.181.07-0ubuntu0.18.04.1 o xserver-xorg-video-nvidia-440-server - 450.102.04-0ubuntu0.18.04.1 o xserver-xorg-video-nvidia-450-server - 450.102.04-0ubuntu0.18.04.1 This update uses a new upstream release, which includes additional bug fixes. After a standard system update you need to reboot your computer to make all the necessary changes. References o CVE-2021-1053 o CVE-2021-1052 Related notices o USN-4689-2 : linux-image-gke, linux-image-5.8.0-1017-azure, linux-image-oracle, linux-oracle, linux-image-5.4.0-1035-oracle, linux-gcp, linux-image-5.8.0-1018-aws, linux-image-oem, linux-image-4.15.0-130-generic, linux-image-5.8.0-1016-gcp, linux-image-4.15.0-1092-aws, linux-image-oem-20.04, linux-image-4.15.0-130-lowlatency, linux-image-oracle-lts-18.04, linux-image-5.4.0-1034-gcp, linux-gcp-5.4, linux-image-azure-lts-18.04, linux-aws-5.4, linux-image-aws, linux, linux-azure-5.4, linux-image-5.6.0-1042-oem, linux-image-5.8.0-1015-oracle, linux-image-aws-lts-18.04, linux-image-virtual-hwe-18.04, linux-oem-5.6, linux-aws, linux-image-lowlatency-hwe-18.04, linux-image-4.15.0-1104-azure, linux-image-generic, linux-image-5.8.0-36-generic, linux-image-5.4.0-1036-azure, linux-image-gcp, linux-image-5.4.0-60-generic, linux-azure, linux-hwe-5.8, linux-hwe-5.4, linux-image-5.4.0-1035-aws, linux-image-generic-hwe-18.04, linux-image-virtual, linux-image-oem-osp1, linux-image-azure, linux-image-generic-hwe-20.04, linux-image-lowlatency-hwe-20.04, linux-image-4.15.0-1063-oracle, linux-image-5.4.0-60-lowlatency, linux-image-5.8.0-36-lowlatency, linux-image-virtual-hwe-20.04, linux-azure-4.15, linux-image-lowlatency, linux-oracle-5.4 o USN-4689-1 : xserver-xorg-video-nvidia-390, nvidia-graphics-drivers-450, xserver-xorg-video-nvidia-460, xserver-xorg-video-nvidia-450, xserver-xorg-video-nvidia-455, xserver-xorg-video-nvidia-440, nvidia-graphics-drivers-390, nvidia-graphics-drivers-460 - ------------------------------------------------------------------------------- USN-4689-4: Linux kernel update 21 January 2021 Several security issues were fixed in NVIDIA graphics drivers. Releases o Ubuntu 20.10 o Ubuntu 20.04 LTS o Ubuntu 18.04 LTS Packages 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-hwe-5.4 - Linux hardware enablement (HWE) kernel o linux-hwe-5.8 - Linux hardware enablement (HWE) kernel o linux-oracle - Linux kernel for Oracle Cloud systems Details USN-4689-3 fixed vulnerabilities in the NVIDIA server graphics drivers. This update provides the corresponding updates for the NVIDIA Linux DKMS kernel modules. Original advisory details: It was discovered that the NVIDIA GPU display driver for the Linux kernel contained a vulnerability that allowed user-mode clients to access legacy privileged APIs. A local attacker could use this to cause a denial of service or escalate privileges. ( CVE-2021-1052 ) It was discovered that the NVIDIA GPU display driver for the Linux kernel did not properly validate a pointer received from userspace in some situations. A local attacker could use this to cause a denial of service. ( CVE-2021-1053 ) Xinyuan Lyu discovered that the NVIDIA GPU display driver for the Linux kernel did not properly restrict device-level GPU isolation. A local attacker could use this to cause a denial of service or possibly expose sensitive information. ( CVE-2021-1056 ) Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 20.10 o linux-image-5.8.0-1017-oracle - 5.8.0-1017.18 o linux-image-5.8.0-1019-azure - 5.8.0-1019.21 o linux-image-5.8.0-1019-gcp - 5.8.0-1019.20 o linux-image-5.8.0-1020-aws - 5.8.0-1020.22 o linux-image-5.8.0-40-generic - 5.8.0-40.45 o linux-image-5.8.0-40-lowlatency - 5.8.0-40.45 o linux-image-aws - 5.8.0.1020.22 o linux-image-azure - 5.8.0.1019.19 o linux-image-gcp - 5.8.0.1019.19 o linux-image-generic - 5.8.0.40.44 o linux-image-gke - 5.8.0.1019.19 o linux-image-lowlatency - 5.8.0.40.44 o linux-image-oem-20.04 - 5.8.0.40.44 o linux-image-oracle - 5.8.0.1017.17 o linux-image-virtual - 5.8.0.40.44 Ubuntu 20.04 o linux-image-5.4.0-64-generic - 5.4.0-64.72 o linux-image-5.4.0-64-lowlatency - 5.4.0-64.72 o linux-image-5.8.0-40-generic - 5.8.0-40.45~20.04.1 o linux-image-5.8.0-40-lowlatency - 5.8.0-40.45~20.04.1 o linux-image-generic - 5.4.0.64.67 o linux-image-generic-hwe-20.04 - 5.8.0.40.45~20.04.25 o linux-image-generic-lpae-hwe-20.04 - 5.8.0.40.45~20.04.25 o linux-image-lowlatency - 5.4.0.64.67 o linux-image-lowlatency-hwe-20.04 - 5.8.0.40.45~20.04.25 o linux-image-oem - 5.4.0.64.67 o linux-image-oem-osp1 - 5.4.0.64.67 o linux-image-virtual - 5.4.0.64.67 o linux-image-virtual-hwe-20.04 - 5.8.0.40.45~20.04.25 Ubuntu 18.04 o linux-image-4.15.0-134-generic - 4.15.0-134.138 o linux-image-4.15.0-134-lowlatency - 4.15.0-134.138 o linux-image-5.4.0-64-generic - 5.4.0-64.72~18.04.1 o linux-image-5.4.0-64-lowlatency - 5.4.0-64.72~18.04.1 o linux-image-generic - 4.15.0.134.121 o linux-image-generic-hwe-18.04 - 5.4.0.64.72~18.04.59 o linux-image-lowlatency - 4.15.0.134.121 o linux-image-lowlatency-hwe-18.04 - 5.4.0.64.72~18.04.59 o linux-image-oem - 5.4.0.64.72~18.04.59 o linux-image-oem-osp1 - 5.4.0.64.72~18.04.59 o linux-image-virtual - 4.15.0.134.121 o linux-image-virtual-hwe-18.04 - 5.4.0.64.72~18.04.59 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 CVE-2021-1053 o CVE-2021-1052 Related notices o USN-4689-2 : linux-image-gke, linux-image-5.8.0-1017-azure, linux-image-oracle, linux-oracle, linux-image-5.4.0-1035-oracle, linux-gcp, linux-image-5.8.0-1018-aws, linux-image-oem, linux-image-4.15.0-130-generic, linux-image-5.8.0-1016-gcp, linux-image-4.15.0-1092-aws, linux-image-oem-20.04, linux-image-4.15.0-130-lowlatency, linux-image-oracle-lts-18.04, linux-image-5.4.0-1034-gcp, linux-gcp-5.4, linux-image-azure-lts-18.04, linux-aws-5.4, linux-image-aws, linux, linux-azure-5.4, linux-image-5.6.0-1042-oem, linux-image-5.8.0-1015-oracle, linux-image-aws-lts-18.04, linux-image-virtual-hwe-18.04, linux-oem-5.6, linux-aws, linux-image-lowlatency-hwe-18.04, linux-image-4.15.0-1104-azure, linux-image-generic, linux-image-5.8.0-36-generic, linux-image-5.4.0-1036-azure, linux-image-gcp, linux-image-5.4.0-60-generic, linux-azure, linux-hwe-5.8, linux-hwe-5.4, linux-image-5.4.0-1035-aws, linux-image-generic-hwe-18.04, linux-image-virtual, linux-image-oem-osp1, linux-image-azure, linux-image-generic-hwe-20.04, linux-image-lowlatency-hwe-20.04, linux-image-4.15.0-1063-oracle, linux-image-5.4.0-60-lowlatency, linux-image-5.8.0-36-lowlatency, linux-image-virtual-hwe-20.04, linux-azure-4.15, linux-image-lowlatency, linux-oracle-5.4 o USN-4689-3 : xserver-xorg-video-nvidia-450-server, nvidia-kernel-source-450-server, nvidia-kernel-source-440-server, nvidia-kernel-source-418-server, nvidia-kernel-common-440-server, nvidia-graphics-drivers-418-server, nvidia-utils-440-server, xserver-xorg-video-nvidia-418-server, nvidia-dkms-450-server, nvidia-kernel-common-450-server, xserver-xorg-video-nvidia-440-server, nvidia-dkms-440-server, nvidia-kernel-common-418-server, nvidia-utils-418-server, nvidia-dkms-418-server, nvidia-graphics-drivers-450-server, nvidia-utils-450-server o USN-4689-1 : xserver-xorg-video-nvidia-390, nvidia-graphics-drivers-450, xserver-xorg-video-nvidia-460, xserver-xorg-video-nvidia-450, xserver-xorg-video-nvidia-455, xserver-xorg-video-nvidia-440, nvidia-graphics-drivers-390, nvidia-graphics-drivers-460 - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. 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It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://www.auscert.org.au/bulletins/ =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). 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