========================================================================= Ubuntu Security Notice USN-5622-1 September 21, 2022 linux, linux-aws, linux-aws-5.4, linux-azure, linux-azure-5.4, linux-bluefield, linux-gkeop, linux-hwe-5.4, linux-ibm, linux-ibm-5.4, linux-kvm, linux-oracle, linux-oracle-5.4, linux-raspi vulnerabilities ========================================================================= A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 20.04 LTS - Ubuntu 18.04 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-bluefield: Linux kernel for NVIDIA BlueField platforms - linux-gkeop: Linux kernel for Google Container Engine (GKE) systems - linux-ibm: Linux kernel for IBM cloud 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-5.4: Linux kernel for Amazon Web Services (AWS) systems - linux-azure-5.4: Linux kernel for Microsoft Azure cloud systems - linux-hwe-5.4: Linux hardware enablement (HWE) kernel - linux-ibm-5.4: Linux kernel for IBM cloud systems - linux-oracle-5.4: Linux kernel for Oracle Cloud systems Details: It was discovered that the framebuffer driver on the Linux kernel did not verify size limits when changing font or screen size, leading to an out-of- bounds write. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-33655) Moshe Kol, Amit Klein and Yossi Gilad discovered that the IP implementation in the Linux kernel did not provide sufficient randomization when calculating port offsets. An attacker could possibly use this to expose sensitive information. (CVE-2022-1012, CVE-2022-32296) Norbert Slusarek discovered that a race condition existed in the perf subsystem in the Linux kernel, resulting in a use-after-free vulnerability. A privileged local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-1729) It was discovered that the device-mapper verity (dm-verity) driver in the Linux kernel did not properly verify targets being loaded into the device- mapper table. A privileged attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-2503) Domingo Dirutigliano and Nicola Guerrera discovered that the netfilter subsystem in the Linux kernel did not properly handle rules that truncated packets below the packet header size. When such rules are in place, a remote attacker could possibly use this to cause a denial of service (system crash). (CVE-2022-36946) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 20.04 LTS: linux-image-5.4.0-1033-ibm 5.4.0-1033.37 linux-image-5.4.0-1046-bluefield 5.4.0-1046.51 linux-image-5.4.0-1053-gkeop 5.4.0-1053.56 linux-image-5.4.0-1070-raspi 5.4.0-1070.80 linux-image-5.4.0-1075-kvm 5.4.0-1075.80 linux-image-5.4.0-1083-oracle 5.4.0-1083.91 linux-image-5.4.0-1085-aws 5.4.0-1085.92 linux-image-5.4.0-1091-azure 5.4.0-1091.96 linux-image-5.4.0-126-generic 5.4.0-126.142 linux-image-5.4.0-126-generic-lpae 5.4.0-126.142 linux-image-5.4.0-126-lowlatency 5.4.0-126.142 linux-image-aws-lts-20.04 5.4.0.1085.85 linux-image-azure-lts-20.04 5.4.0.1091.88 linux-image-bluefield 5.4.0.1046.45 linux-image-generic 5.4.0.126.127 linux-image-generic-lpae 5.4.0.126.127 linux-image-gkeop 5.4.0.1053.54 linux-image-gkeop-5.4 5.4.0.1053.54 linux-image-ibm 5.4.0.1033.62 linux-image-ibm-lts-20.04 5.4.0.1033.62 linux-image-kvm 5.4.0.1075.72 linux-image-lowlatency 5.4.0.126.127 linux-image-oem 5.4.0.126.127 linux-image-oem-osp1 5.4.0.126.127 linux-image-oracle-lts-20.04 5.4.0.1083.80 linux-image-raspi 5.4.0.1070.103 linux-image-raspi2 5.4.0.1070.103 linux-image-virtual 5.4.0.126.127 Ubuntu 18.04 LTS: linux-image-5.4.0-1033-ibm 5.4.0-1033.37~18.04.1 linux-image-5.4.0-1083-oracle 5.4.0-1083.91~18.04.1 linux-image-5.4.0-1085-aws 5.4.0-1085.92~18.04.1 linux-image-5.4.0-1091-azure 5.4.0-1091.96~18.04.1 linux-image-5.4.0-126-generic 5.4.0-126.142~18.04.1 linux-image-5.4.0-126-generic-lpae 5.4.0-126.142~18.04.1 linux-image-5.4.0-126-lowlatency 5.4.0-126.142~18.04.1 linux-image-aws 5.4.0.1085.65 linux-image-azure 5.4.0.1091.68 linux-image-generic-hwe-18.04 5.4.0.126.142~18.04.106 linux-image-generic-lpae-hwe-18.04 5.4.0.126.142~18.04.106 linux-image-ibm 5.4.0.1033.47 linux-image-lowlatency-hwe-18.04 5.4.0.126.142~18.04.106 linux-image-oem 5.4.0.126.142~18.04.106 linux-image-oem-osp1 5.4.0.126.142~18.04.106 linux-image-oracle 5.4.0.1083.91~18.04.60 linux-image-snapdragon-hwe-18.04 5.4.0.126.142~18.04.106 linux-image-virtual-hwe-18.04 5.4.0.126.142~18.04.106 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-5622-1 CVE-2021-33655, CVE-2022-1012, CVE-2022-1729, CVE-2022-2503, CVE-2022-32296, CVE-2022-36946 Package Information: https://launchpad.net/ubuntu/+source/linux/5.4.0-126.142 https://launchpad.net/ubuntu/+source/linux-aws/5.4.0-1085.92 https://launchpad.net/ubuntu/+source/linux-azure/5.4.0-1091.96 https://launchpad.net/ubuntu/+source/linux-bluefield/5.4.0-1046.51 https://launchpad.net/ubuntu/+source/linux-gkeop/5.4.0-1053.56 https://launchpad.net/ubuntu/+source/linux-ibm/5.4.0-1033.37 https://launchpad.net/ubuntu/+source/linux-kvm/5.4.0-1075.80 https://launchpad.net/ubuntu/+source/linux-oracle/5.4.0-1083.91 https://launchpad.net/ubuntu/+source/linux-raspi/5.4.0-1070.80 https://launchpad.net/ubuntu/+source/linux-aws-5.4/5.4.0-1085.92~18.04.1 https://launchpad.net/ubuntu/+source/linux-azure-5.4/5.4.0-1091.96~18.04.1 https://launchpad.net/ubuntu/+source/linux-hwe-5.4/5.4.0-126.142~18.04.1 https://launchpad.net/ubuntu/+source/linux-ibm-5.4/5.4.0-1033.37~18.04.1 https://launchpad.net/ubuntu/+source/linux-oracle-5.4/5.4.0-1083.91~18.04.1