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Ubuntu 21.10 USN-5317-1 Moderate Kernel Denial Of Service

Several security issues were fixed in the Linux kernel.. =========================================================================Ubuntu Security Notice USN-5317-1 March 09, 2022 linux, linux-aws, linux-aws-5.13, linux-azure, linux-azure-5.13, linux-gcp, linux-gcp-5.13, linux-hwe-5.13, linux-kvm, linux-oem-5.14, linux-oracle, linux-oracle-5.13, linux-raspi vulnerabilities ========================================================================= A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 21.10 - Ubuntu 20.04 LTS Summary: Several security issues were fixed in the Linux kernel. 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-kvm: Linux kernel for cloud environments - linux-oracle: Linux kernel for Oracle Cloud systems - linux-raspi: Linux kernel for Raspberry Pi systems - linux-aws-5.13: Linux kernel for Amazon Web Services (AWS) systems - linux-azure-5.13: Linux kernel for Microsoft Azure cloud systems - linux-gcp-5.13: Linux kernel for Google Cloud Platform (GCP) systems - linux-hwe-5.13: Linux hardware enablement (HWE) kernel - linux-oem-5.14: Linux kernel for OEM systems - linux-oracle-5.13: Linux kernel for Oracle Cloud systems Details: Nick Gregory discovered that the Linux kernel incorrectly handled network offload functionality. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. (CVE-2022-25636) Enrico Barberis, Pietro Frigo, Marius Muench, Herbert Bos, and Cristiano Giuffrida discovered that hardware mitigations added by ARM to their processors to address Spectre-BTI were insufficient. A local attacker could potentially use this to expose sensitive information. (CVE-2022-23960) Max Kellermann discovered that the Linux kernel incorrectly handled Unix pipes. A local attacker could potentially use this to modify any filethat could be opened for reading. (CVE-2022-0847) Enrico Barberis, Pietro Frigo, Marius Muench, Herbert Bos, and Cristiano Giuffrida discovered that hardware mitigations added by Intel to their processors to address Spectre-BTI were insufficient. A local attacker could potentially use this to expose sensitive information. (CVE-2022-0001, CVE-2022-0002) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 21.10: linux-image-5.13.0-1016-kvm 5.13.0-1016.17 linux-image-5.13.0-1017-aws 5.13.0-1017.19 linux-image-5.13.0-1017-azure 5.13.0-1017.19 linux-image-5.13.0-1019-gcp 5.13.0-1019.23 linux-image-5.13.0-1020-raspi 5.13.0-1020.22 linux-image-5.13.0-1020-raspi-nolpae 5.13.0-1020.22 linux-image-5.13.0-1021-oracle 5.13.0-1021.26 linux-image-5.13.0-35-generic 5.13.0-35.40 linux-image-5.13.0-35-generic-64k 5.13.0-35.40 linux-image-5.13.0-35-generic-lpae 5.13.0-35.40 linux-image-5.13.0-35-lowlatency 5.13.0-35.40 linux-image-aws 5.13.0.1017.18 linux-image-azure 5.13.0.1017.17 linux-image-gcp 5.13.0.1019.17 linux-image-generic 5.13.0.35.44 linux-image-generic-64k 5.13.0.35.44 linux-image-generic-lpae 5.13.0.35.44 linux-image-gke 5.13.0.1019.17 linux-image-kvm 5.13.0.1016.16 linux-image-lowlatency 5.13.0.35.44 linux-image-oem-20.04 5.13.0.35.44 linux-image-oracle 5.13.0.1021.21 linux-image-raspi 5.13.0.1020.25 linux-image-raspi-nolpae 5.13.0.1020.25 linux-image-virtual 5.13.0.35.44 Ubuntu 20.04 LTS: linux-image-5.13.0-1017-aws 5.13.0-1017.19~20.04.1 linux-image-5.13.0-1017-azure 5.13.0-1017.19~20.04.1 linux-image-5.13.0-1019-gcp 5.13.0-1019.23~20.04.1 linux-image-5.13.0-1021-oracle 5.13.0-1021.26~20.04.1 linux-image-5.13.0-35-generic 5.13.0-35.40~20.04.1 linux-image-5.13.0-35-generic-64k 5.13.0-35.40~20.04.1 linux-image-5.13.0-35-generic-lpae 5.13.0-35.40~20.04.1 linux-image-5.13.0-35-lowlatency 5.13.0-35.40~20.04.1 linux-image-5.14.0-1027-oem 5.14.0-1027.30 linux-image-aws 5.13.0.1017.19~20.04.10 linux-image-azure 5.13.0.1017.19~20.04.7 linux-image-gcp 5.13.0.1019.23~20.04.1 linux-image-generic-64k-hwe-20.04 5.13.0.35.40~20.04.20 linux-image-generic-hwe-20.04 5.13.0.35.40~20.04.20 linux-image-generic-lpae-hwe-20.04 5.13.0.35.40~20.04.20 linux-image-lowlatency-hwe-20.04 5.13.0.35.40~20.04.20 linux-image-oem-20.04 5.14.0.1027.24 linux-image-oem-20.04b 5.14.0.1027.24 linux-image-oem-20.04c 5.14.0.1027.24 linux-image-oem-20.04d 5.14.0.1027.24 linux-image-oracle 5.13.0.1021.26~20.04.1 linux-image-virtual-hwe-20.04 5.13.0.35.40~20.04.20 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-5317-1 CVE-2022-0001, CVE-2022-0002, CVE-2022-0847, CVE-2022-23960, CVE-2022-25636, https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/BHI Package Information: https://launchpad.net/ubuntu/+source/linux/5.13.0-35.40 https://launchpad.net/ubuntu/+source/linux-aws/5.13.0-1017.19 https://launchpad.net/ubuntu/+source/linux-azure/5.13.0-1017.19 https://launchpad.net/ubuntu/+source/linux-gcp/5.13.0-1019.23 https://launchpad.net/ubuntu/+source/linux-kvm/5.13.0-1016.17 https://launchpad.net/ubuntu/+source/linux-oracle/5.13.0-1021.26 https://launchpad.net/ubuntu/+source/linux-raspi/5.13.0-1020.22 https://launchpad.net/ubuntu/+source/linux-aws-5.13/5.13.0-1017.19~20.04.1 https://launchpad.net/ubuntu/+source/linux-azure-5.13/5.13.0-1017.19~20.04.1 https://launchpad.net/ubuntu/+source/linux-gcp-5.13/5.13.0-1019.23~20.04.1 https://launchpad.net/ubuntu/+source/linux-hwe-5.13/5.13.0-35.40~20.04.1 https://launchpad.net/ubuntu/+source/linux-oem-5.14/5.14.0-1027.30 https://launchpad.net/ubuntu/+source/linux-oracle-5.13/5.13.0-1021.26~20.04.1 . Ubuntu Security Update USN-5318-1 outlines the latest kernel patches that rectify several vulnerabilities to bolster system defenses.. Linux Kernel Patches, Ubuntu Security Updates, Kernel Denial Threats. . LinuxSecurity.com Team

Mar 08, 2022 Ubuntu