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Ubuntu 20.04 LTS: USN-7776-1 Linux Kernel Critical Security Issues

Several security issues were fixed in the Linux kernel.. ========================================================================== Ubuntu Security Notice USN-7776-1 September 25, 2025 linux-oracle-5.15 vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 20.04 LTS Summary: Several security issues were fixed in the Linux kernel. Software Description: - linux-oracle-5.15: Linux kernel for Oracle Cloud systems Details: Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM64 architecture; - PowerPC architecture; - x86 architecture; - ACPI drivers; - Serial ATA and Parallel ATA drivers; - Drivers core; - ATA over ethernet (AOE) driver; - Network block device driver; - Bus devices; - Clock framework and drivers; - Hardware crypto device drivers; - DMA engine subsystem; - EDAC drivers; - GPU drivers; - HID subsystem; - InfiniBand drivers; - Input Device (Miscellaneous) drivers; - Multiple devices driver; - Media drivers; - VMware VMCI Driver; - MMC subsystem; - MTD block device drivers; - Network drivers; - Pin controllers subsystem; - x86 platform drivers; - PTP clock framework; - RapidIO drivers; - Voltage and Current Regulator drivers; - Remote Processor subsystem; - S/390 drivers; - SCSI subsystem; - ASPEED SoC drivers; - TCM subsystem; - Thermal drivers; - Thunderbolt and USB4 drivers; - TTY drivers; - UFS subsystem; - USB Gadget drivers; - Renesas USBHS Controller drivers; - USB Type-C support driver; - Virtio Host (VHOST) subsystem; - Backlight driver; - Framebuffer layer; - BTRFS file system; - File systems infrastructure; - Ext4 file system; - F2FS file system; - JFFS2 file system; - JFS file system; - Network file system (NFS) client; - Network filesystem (NFS) server daemon; - NTFS3 file system; - DRM display driver; - Memory Management; - Mellanox drivers; - Memory management; - Netfilter; - Network sockets; - IPC subsystem; - BPF subsystem; - Perf events; - Kernel exit() syscall; - Restartable seuqences system call mechanism; - Timer subsystem; - Tracing infrastructure; - Appletalk network protocol; - Asynchronous Transfer Mode (ATM) subsystem; - Networking core; - IPv6 networking; - MultiProtocol Label Switching driver; - NetLabel subsystem; - Netlink; - NFC subsystem; - Open vSwitch; - Rose network layer; - RxRPC session sockets; - Network traffic control; - TIPC protocol; - VMware vSockets driver; - USB sound devices; (CVE-2025-38420, CVE-2025-38173, CVE-2025-38305, CVE-2025-38312, CVE-2025-38458, CVE-2024-26726, CVE-2025-38416, CVE-2025-38363, CVE-2025-38107, CVE-2025-38174, CVE-2025-38310, CVE-2025-38406, CVE-2025-38439, CVE-2025-38245, CVE-2025-38163, CVE-2025-38111, CVE-2025-38467, CVE-2025-38515, CVE-2025-38391, CVE-2025-21888, CVE-2025-38108, CVE-2025-38395, CVE-2025-38212, CVE-2025-38153, CVE-2025-38226, CVE-2025-38375, CVE-2025-37958, CVE-2025-38444, CVE-2022-48703, CVE-2025-38280, CVE-2025-38345, CVE-2025-38384, CVE-2025-38362, CVE-2025-38326, CVE-2025-38348, CVE-2025-37752, CVE-2025-38324, CVE-2025-38298, CVE-2025-38206, CVE-2025-38219, CVE-2025-38145, CVE-2025-38200, CVE-2025-38293, CVE-2025-38461, CVE-2025-38514, CVE-2025-38389, CVE-2025-38319, CVE-2025-38344, CVE-2025-38160, CVE-2025-38159, CVE-2025-38424, CVE-2025-38412, CVE-2025-38346, CVE-2025-38466, CVE-2024-27407, CVE-2025-38211, CVE-2025-38419, CVE-2025-38227, CVE-2025-38120, CVE-2025-38143, CVE-2025-38122, CVE-2025-38197, CVE-2025-38285, CVE-2025-38273, CVE-2025-38112, CVE-2025-38403, CVE-2025-38249, CVE-2025-38448, CVE-2025-38203, CVE-2025-38085, CVE-2024-44939, CVE-2025-38119, CVE-2025-38184, CVE-2025-38443, CVE-2025-38084, CVE-2025-38194, CVE-2025-38459, CVE-2025-38231, CVE-2025-38229, CVE-2025-38418, CVE-2025-38415,CVE-2024-57883, CVE-2025-38513, CVE-2025-38460, CVE-2025-38377, CVE-2025-38147, CVE-2025-38371, CVE-2025-38428, CVE-2025-38237, CVE-2025-38542, CVE-2025-38100, CVE-2025-38251, CVE-2025-38430, CVE-2025-38336, CVE-2025-38103, CVE-2025-38342, CVE-2025-38154, CVE-2025-38540, CVE-2025-38161, CVE-2025-38399, CVE-2024-57996, CVE-2025-38350, CVE-2025-38516, CVE-2025-38262, CVE-2025-38393, CVE-2025-38204, CVE-2024-26775, CVE-2025-38464, CVE-2025-38135, CVE-2025-38313, CVE-2025-38387, CVE-2025-38102, CVE-2025-37963, CVE-2025-38401, CVE-2025-38257, CVE-2025-38400, CVE-2025-38386, CVE-2025-38138, CVE-2025-38074, CVE-2025-38410, CVE-2025-38218, CVE-2025-38115, CVE-2025-38222, CVE-2025-38286, CVE-2025-38136, CVE-2025-38328, CVE-2025-38146, CVE-2025-38462, CVE-2025-38157, CVE-2025-38067, CVE-2025-38086, CVE-2025-38445, CVE-2025-38090, CVE-2025-38498, CVE-2025-38167, CVE-2025-38352, CVE-2025-38441, CVE-2025-38337, CVE-2025-37948, CVE-2025-38320, CVE-2025-38332, CVE-2025-38181, CVE-2025-38457, CVE-2025-38465, CVE-2025-38263, CVE-2025-38088) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 20.04 LTS linux-image-5.15.0-1090-oracle 5.15.0-1090.96~20.04.1 Available with Ubuntu Pro linux-image-oracle 5.15.0.1090.96~20.04.1 Available with Ubuntu Pro linux-image-oracle-5.15 5.15.0.1090.96~20.04.1 Available with Ubuntu Pro 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 aswell. References: https://ubuntu.com/security/notices/USN-7776-1 CVE-2022-48703, CVE-2024-26726, CVE-2024-26775, CVE-2024-27407, CVE-2024-44939, CVE-2024-57883, CVE-2024-57996, CVE-2025-21888, CVE-2025-37752, CVE-2025-37948, CVE-2025-37958, CVE-2025-37963, CVE-2025-38067, CVE-2025-38074, CVE-2025-38084, CVE-2025-38085, CVE-2025-38086, CVE-2025-38088, CVE-2025-38090, CVE-2025-38100, CVE-2025-38102, CVE-2025-38103, CVE-2025-38107, CVE-2025-38108, CVE-2025-38111, CVE-2025-38112, CVE-2025-38115, CVE-2025-38119, CVE-2025-38120, CVE-2025-38122, CVE-2025-38135, CVE-2025-38136, CVE-2025-38138, CVE-2025-38143, CVE-2025-38145, CVE-2025-38146, CVE-2025-38147, CVE-2025-38153, CVE-2025-38154, CVE-2025-38157, CVE-2025-38159, CVE-2025-38160, CVE-2025-38161, CVE-2025-38163, CVE-2025-38167, CVE-2025-38173, CVE-2025-38174, CVE-2025-38181, CVE-2025-38184, CVE-2025-38194, CVE-2025-38197, CVE-2025-38200, CVE-2025-38203, CVE-2025-38204, CVE-2025-38206, CVE-2025-38211, CVE-2025-38212, CVE-2025-38218, CVE-2025-38219, CVE-2025-38222, CVE-2025-38226, CVE-2025-38227, CVE-2025-38229, CVE-2025-38231, CVE-2025-38237, CVE-2025-38245, CVE-2025-38249, CVE-2025-38251, CVE-2025-38257, CVE-2025-38262, CVE-2025-38263, CVE-2025-38273, CVE-2025-38280, CVE-2025-38285, CVE-2025-38286, CVE-2025-38293, CVE-2025-38298, CVE-2025-38305, CVE-2025-38310, CVE-2025-38312, CVE-2025-38313, CVE-2025-38319, CVE-2025-38320, CVE-2025-38324, CVE-2025-38326, CVE-2025-38328, CVE-2025-38332, CVE-2025-38336, CVE-2025-38337, CVE-2025-38342, CVE-2025-38344, CVE-2025-38345, CVE-2025-38346, CVE-2025-38348, CVE-2025-38350, CVE-2025-38352, CVE-2025-38362, CVE-2025-38363, CVE-2025-38371, CVE-2025-38375, CVE-2025-38377, CVE-2025-38384, CVE-2025-38386, CVE-2025-38387, CVE-2025-38389, CVE-2025-38391, CVE-2025-38393, CVE-2025-38395, CVE-2025-38399, CVE-2025-38400, CVE-2025-38401, CVE-2025-38403, CVE-2025-38406, CVE-2025-38410, CVE-2025-38412, CVE-2025-38415, CVE-2025-38416, CVE-2025-38418, CVE-2025-38419,CVE-2025-38420, CVE-2025-38424, CVE-2025-38428, CVE-2025-38430, CVE-2025-38439, CVE-2025-38441, CVE-2025-38443, CVE-2025-38444, CVE-2025-38445, CVE-2025-38448, CVE-2025-38457, CVE-2025-38458, CVE-2025-38459, CVE-2025-38460, CVE-2025-38461, CVE-2025-38462, CVE-2025-38464, CVE-2025-38465, CVE-2025-38466, CVE-2025-38467, CVE-2025-38498, CVE-2025-38513, CVE-2025-38514, CVE-2025-38515, CVE-2025-38516, CVE-2025-38540, CVE-2025-38542 . Multiple vulnerabilities addressed in the Linux kernel for Ubuntu 20.04 LTS impacting various hardware drivers. Prompt update advised.. Linux Kernel Updates, Ubuntu 20.04 LTS, Security Issues, Hardware Drivers Update. . Severity: Critical. LinuxSecurity.com Team

Calendar 2 Sep 25, 2025 •Critical Ubuntu
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Ls Advisories Ubuntu Esm H240
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Ubuntu 20.04 LTS Security Advisory USN-6951-4: Linux Kernel Update

Several security issues were fixed in the Linux kernel.. ========================================================================== Ubuntu Security Notice USN-6951-4 August 21, 2024 linux-bluefield vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 20.04 LTS Summary: Several security issues were fixed in the Linux kernel. Software Description: - linux-bluefield: Linux kernel for NVIDIA BlueField platforms Details: Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM64 architecture; - M68K architecture; - User-Mode Linux (UML); - x86 architecture; - Accessibility subsystem; - Character device driver; - Clock framework and drivers; - CPU frequency scaling framework; - Hardware crypto device drivers; - Buffer Sharing and Synchronization framework; - FireWire subsystem; - GPU drivers; - HW tracing; - Macintosh device drivers; - Multiple devices driver; - Media drivers; - Network drivers; - Pin controllers subsystem; - S/390 drivers; - SCSI drivers; - SoundWire subsystem; - Greybus lights staging drivers; - TTY drivers; - Framebuffer layer; - Virtio drivers; - 9P distributed file system; - eCrypt file system; - EROFS file system; - Ext4 file system; - F2FS file system; - JFFS2 file system; - Network file system client; - NILFS2 file system; - SMB network file system; - Kernel debugger infrastructure; - IRQ subsystem; - Tracing infrastructure; - Dynamic debug library; - 9P file system network protocol; - Bluetooth subsystem; - Networking core; - IPv4 networking; - IPv6 networking; - Netfilter; - NET/ROM layer; - NFC subsystem; - NSH protocol; - OpenvSwitch; - Phonet protocol; - TIPC protocol; - Unix domain sockets; - Wireless networking; - eXpress Data Path; - XFRM subsystem; - ALSA framework; (CVE-2024-36934, CVE-2024-38578, CVE-2024-38600, CVE-2024-27399, CVE-2024-39276, CVE-2024-38596, CVE-2024-36933, CVE-2024-36919, CVE-2024-35976, CVE-2024-37356, CVE-2023-52585, CVE-2024-38558, CVE-2024-38560, CVE-2024-38634, CVE-2024-36959, CVE-2024-38633, CVE-2024-36886, CVE-2024-27398, CVE-2024-39493, CVE-2024-26886, CVE-2024-31076, CVE-2024-38559, CVE-2024-38615, CVE-2024-36971, CVE-2024-38627, CVE-2024-36964, CVE-2024-38780, CVE-2024-37353, CVE-2024-38621, CVE-2024-36883, CVE-2024-39488, CVE-2024-38661, CVE-2024-36939, CVE-2024-38589, CVE-2024-38565, CVE-2024-38381, CVE-2024-35947, CVE-2024-36905, CVE-2022-48772, CVE-2024-36017, CVE-2024-36946, CVE-2024-27401, CVE-2024-38579, CVE-2024-38612, CVE-2024-38598, CVE-2024-38635, CVE-2024-38587, CVE-2024-38567, CVE-2024-38549, CVE-2024-36960, CVE-2023-52752, CVE-2024-27019, CVE-2024-38601, CVE-2024-39489, CVE-2024-39467, CVE-2023-52882, CVE-2024-38583, CVE-2024-39480, CVE-2024-38607, CVE-2024-36940, CVE-2024-38659, CVE-2023-52434, CVE-2024-36015, CVE-2024-38582, CVE-2024-36950, CVE-2024-38552, CVE-2024-33621, CVE-2024-36954, CVE-2024-39475, CVE-2024-39301, CVE-2024-38599, CVE-2024-36902, CVE-2024-36286, CVE-2024-38613, CVE-2024-38637, CVE-2024-36941, CVE-2024-36014, CVE-2024-38618, CVE-2024-36904, CVE-2024-36270, CVE-2024-39292, CVE-2024-39471, CVE-2022-48674) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 20.04 LTS linux-image-5.4.0-1090-bluefield 5.4.0-1090.97 linux-image-bluefield 5.4.0.1090.86 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 kernelmodules 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: https://ubuntu.com/security/notices/USN-6951-4 https://ubuntu.com/security/notices/USN-6951-3 https://ubuntu.com/security/notices/USN-6951-2 https://ubuntu.com/security/notices/USN-6951-1 CVE-2022-48674, CVE-2022-48772, CVE-2023-52434, CVE-2023-52585, CVE-2023-52752, CVE-2023-52882, CVE-2024-26886, CVE-2024-27019, CVE-2024-27398, CVE-2024-27399, CVE-2024-27401, CVE-2024-31076, CVE-2024-33621, CVE-2024-35947, CVE-2024-35976, CVE-2024-36014, CVE-2024-36015, CVE-2024-36017, CVE-2024-36270, CVE-2024-36286, CVE-2024-36883, CVE-2024-36886, CVE-2024-36902, CVE-2024-36904, CVE-2024-36905, CVE-2024-36919, CVE-2024-36933, CVE-2024-36934, CVE-2024-36939, CVE-2024-36940, CVE-2024-36941, CVE-2024-36946, CVE-2024-36950, CVE-2024-36954, CVE-2024-36959, CVE-2024-36960, CVE-2024-36964, CVE-2024-36971, CVE-2024-37353, CVE-2024-37356, CVE-2024-38381, CVE-2024-38549, CVE-2024-38552, CVE-2024-38558, CVE-2024-38559, CVE-2024-38560, CVE-2024-38565, CVE-2024-38567, CVE-2024-38578, CVE-2024-38579, CVE-2024-38582, CVE-2024-38583, CVE-2024-38587, CVE-2024-38589, CVE-2024-38596, CVE-2024-38598, CVE-2024-38599, CVE-2024-38600, CVE-2024-38601, CVE-2024-38607, CVE-2024-38612, CVE-2024-38613, CVE-2024-38615, CVE-2024-38618, CVE-2024-38621, CVE-2024-38627, CVE-2024-38633, CVE-2024-38634, CVE-2024-38635, CVE-2024-38637, CVE-2024-38659, CVE-2024-38661, CVE-2024-38780, CVE-2024-39276, CVE-2024-39292, CVE-2024-39301, CVE-2024-39467, CVE-2024-39471, CVE-2024-39475, CVE-2024-39480, CVE-2024-39488, CVE-2024-39489, CVE-2024-39493 Package Information: https://launchpad.net/ubuntu/+source/linux-bluefield/5.4.0-1090.97 . Keep up to date with security patches for Ubuntu 20.04 LTS relatedto the Linux kernel across different architectures.. Linux Kernel Updates, BlueField Security, Linux System Security, Ubuntu 20.04, Hardware Driver Fixes. . Severity: Critical. LinuxSecurity.com Team

Calendar 2 Aug 21, 2024 •Critical Ubuntu
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Price Tag 1security advisorydenial of servicecritical issue

Ubuntu 20.10: USN-4689-4 Critical: NVIDIA Kernel Issues Fixed

Several security issues were fixed in NVIDIA graphics drivers.. =========================================================================Ubuntu Security Notice USN-4689-4 January 21, 2021 linux, linux-aws, linux-azure, linux-gcp, linux-hwe-5.4, linux-hwe-5.8, linux-oracle update ========================================================================= A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 20.10 - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS Summary: Several security issues were fixed in NVIDIA graphics drivers. 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-hwe-5.8: Linux hardware enablement (HWE) kernel - linux-hwe-5.4: Linux hardware enablement (HWE) kernel 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: Ubuntu20.10: linux-image-5.8.0-1017-oracle 5.8.0-1017.18 linux-image-5.8.0-1019-azure 5.8.0-1019.21 linux-image-5.8.0-1019-gcp 5.8.0-1019.20 linux-image-5.8.0-1020-aws 5.8.0-1020.22 linux-image-5.8.0-40-generic 5.8.0-40.45 linux-image-5.8.0-40-lowlatency 5.8.0-40.45 linux-image-aws 5.8.0.1020.22 linux-image-azure 5.8.0.1019.19 linux-image-gcp 5.8.0.1019.19 linux-image-generic 5.8.0.40.44 linux-image-gke 5.8.0.1019.19 linux-image-lowlatency 5.8.0.40.44 linux-image-oem-20.04 5.8.0.40.44 linux-image-oracle 5.8.0.1017.17 linux-image-virtual 5.8.0.40.44 Ubuntu 20.04 LTS: linux-image-5.4.0-64-generic 5.4.0-64.72 linux-image-5.4.0-64-lowlatency 5.4.0-64.72 linux-image-5.8.0-40-generic 5.8.0-40.45~20.04.1 linux-image-5.8.0-40-lowlatency 5.8.0-40.45~20.04.1 linux-image-generic 5.4.0.64.67 linux-image-generic-hwe-20.04 5.8.0.40.45~20.04.25 linux-image-generic-lpae-hwe-20.04 5.8.0.40.45~20.04.25 linux-image-lowlatency 5.4.0.64.67 linux-image-lowlatency-hwe-20.04 5.8.0.40.45~20.04.25 linux-image-oem 5.4.0.64.67 linux-image-oem-osp1 5.4.0.64.67 linux-image-virtual 5.4.0.64.67 linux-image-virtual-hwe-20.04 5.8.0.40.45~20.04.25 Ubuntu 18.04 LTS: linux-image-4.15.0-134-generic 4.15.0-134.138 linux-image-4.15.0-134-lowlatency 4.15.0-134.138 linux-image-5.4.0-64-generic 5.4.0-64.72~18.04.1 linux-image-5.4.0-64-lowlatency 5.4.0-64.72~18.04.1 linux-image-generic 4.15.0.134.121 linux-image-generic-hwe-18.04 5.4.0.64.72~18.04.59 linux-image-lowlatency 4.15.0.134.121 linux-image-lowlatency-hwe-18.04 5.4.0.64.72~18.04.59 linux-image-oem 5.4.0.64.72~18.04.59 linux-image-oem-osp1 5.4.0.64.72~18.04.59 linux-image-virtual 4.15.0.134.121 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: https://ubuntu.com/security/notices/USN-4689-1 CVE-2021-1052, CVE-2021-1053 Package Information: https://launchpad.net/ubuntu/+source/linux/5.8.0-40.45 https://launchpad.net/ubuntu/+source/linux-aws/5.8.0-1020.22 https://launchpad.net/ubuntu/+source/linux-azure/5.8.0-1019.21 https://launchpad.net/ubuntu/+source/linux-gcp/5.8.0-1019.20 https://launchpad.net/ubuntu/+source/linux-oracle/5.8.0-1017.18 https://launchpad.net/ubuntu/+source/linux/5.4.0-64.72 https://launchpad.net/ubuntu/+source/linux-hwe-5.8/5.8.0-40.45~20.04.1 https://launchpad.net/ubuntu/+source/linux/4.15.0-134.138 https://launchpad.net/ubuntu/+source/linux-hwe-5.4/5.4.0-64.72~18.04.1 . Essential NVIDIA driver enhancements in Ubuntu tackle various vulnerabilities impacting kernel performance.. NVIDIA Driver Security, Kernel Update, Ubuntu Linux Updates. . Severity: Critical. LinuxSecurity.com Team

Calendar 2 Jan 20, 2021 •Critical Ubuntu
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