[USN-5384-1] Linux kernel vulnerabilities


========================================================================== Ubuntu Security Notice USN-5384-1 April 20, 2022
linux, linux-aws, linux-azure, linux-azure-5.4, linux-azure-fde, linux-gcp, linux-gcp-5.4, linux-gke, linux-gke-5.4, linux-gkeop, linux-gkeop-5.4, linux-hwe-5.4, linux-ibm, linux-ibm-5.4, linux-kvm, linux-oracle, linux-oracle-5.4, linux-raspi, linux-raspi-5.4 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-azure-fde: Linux kernel for Microsoft Azure cloud systems – linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems – linux-gke: Linux kernel for Google Container Engine (GKE) systems – 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-azure-5.4: Linux kernel for Microsoft Azure cloud systems – linux-gcp-5.4: Linux kernel for Google Cloud Platform (GCP) systems – linux-gke-5.4: Linux kernel for Google Container Engine (GKE) systems – linux-gkeop-5.4: Linux kernel for Google Container Engine (GKE) 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 – linux-raspi-5.4: Linux kernel for Raspberry Pi systems
Details:
It was discovered that the UDF file system implementation in the Linux kernel could attempt to dereference a null pointer in some situations. An attacker could use this to construct a malicious UDF image that, when mounted and operated on, could cause a denial of service (system crash). (CVE-2022-0617)
Lyu Tao discovered that the NFS implementation in the Linux kernel did not properly handle requests to open a directory on a regular file. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2022-24448)
It was discovered that the YAM AX.25 device driver in the Linux kernel did not properly deallocate memory in some error conditions. A local privileged attacker could use this to cause a denial of service (kernel memory exhaustion). (CVE-2022-24959)
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 20.04 LTS: linux-image-5.4.0-1020-ibm 5.4.0-1020.22 linux-image-5.4.0-1039-gkeop 5.4.0-1039.40 linux-image-5.4.0-1059-raspi 5.4.0-1059.67 linux-image-5.4.0-1062-kvm 5.4.0-1062.65 linux-image-5.4.0-1068-gke 5.4.0-1068.71 linux-image-5.4.0-1070-oracle 5.4.0-1070.76 linux-image-5.4.0-1072-aws 5.4.0-1072.77 linux-image-5.4.0-1072-gcp 5.4.0-1072.77 linux-image-5.4.0-1076-azure-fde 5.4.0-1076.79+cvm1.1 linux-image-5.4.0-1077-azure 5.4.0-1077.80 linux-image-5.4.0-109-generic 5.4.0-109.123 linux-image-5.4.0-109-generic-lpae 5.4.0-109.123 linux-image-5.4.0-109-lowlatency 5.4.0-109.123 linux-image-aws-lts-20.04 5.4.0.1072.74 linux-image-azure-fde 5.4.0.1076.79+cvm1.21 linux-image-azure-lts-20.04 5.4.0.1077.75 linux-image-gcp-lts-20.04 5.4.0.1072.80 linux-image-generic 5.4.0.109.113 linux-image-generic-lpae 5.4.0.109.113 linux-image-gke 5.4.0.1068.78 linux-image-gke-5.4 5.4.0.1068.78 linux-image-gkeop 5.4.0.1039.42 linux-image-gkeop-5.4 5.4.0.1039.42 linux-image-ibm 5.4.0.1020.20 linux-image-ibm-lts-20.04 5.4.0.1020.20 linux-image-kvm 5.4.0.1062.61 linux-image-lowlatency 5.4.0.109.113 linux-image-oem 5.4.0.109.113 linux-image-oem-osp1 5.4.0.109.113 linux-image-oracle-lts-20.04 5.4.0.1070.70 linux-image-raspi 5.4.0.1059.93 linux-image-raspi2 5.4.0.1059.93 linux-image-virtual 5.4.0.109.113
Ubuntu 18.04 LTS: linux-image-5.4.0-1020-ibm 5.4.0-1020.22~18.04.1 linux-image-5.4.0-1039-gkeop 5.4.0-1039.40~18.04.1 linux-image-5.4.0-1059-raspi 5.4.0-1059.66~18.04.1 linux-image-5.4.0-1068-gke 5.4.0-1068.71~18.04.1 linux-image-5.4.0-1070-oracle 5.4.0-1070.76~18.04.1 linux-image-5.4.0-1072-gcp 5.4.0-1072.77~18.04.1 linux-image-5.4.0-1077-azure 5.4.0-1077.80~18.04.1 linux-image-5.4.0-109-generic 5.4.0-109.123~18.04.1 linux-image-5.4.0-109-generic-lpae 5.4.0-109.123~18.04.1 linux-image-5.4.0-109-lowlatency 5.4.0-109.123~18.04.1 linux-image-azure 5.4.0.1077.56 linux-image-gcp 5.4.0.1072.56 linux-image-generic-hwe-18.04 5.4.0.109.123~18.04.94 linux-image-generic-lpae-hwe-18.04 5.4.0.109.123~18.04.94 linux-image-gke-5.4 5.4.0.1068.71~18.04.32 linux-image-gkeop-5.4 5.4.0.1039.40~18.04.39 linux-image-ibm 5.4.0.1020.37 linux-image-lowlatency-hwe-18.04 5.4.0.109.123~18.04.94 linux-image-oem 5.4.0.109.123~18.04.94 linux-image-oem-osp1 5.4.0.109.123~18.04.94 linux-image-oracle 5.4.0.1070.76~18.04.49 linux-image-raspi-hwe-18.04 5.4.0.1059.60 linux-image-snapdragon-hwe-18.04 5.4.0.109.123~18.04.94 linux-image-virtual-hwe-18.04 5.4.0.109.123~18.04.94
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: ubuntu.com/security/notices/USN-5384-1 CVE-2022-0617, CVE-2022-24448, CVE-2022-24959
Package Information: launchpad.net/ubuntu/+source/linux/5.4.0-109.123 launchpad.net/ubuntu/+source/linux-aws/5.4.0-1072.77 launchpad.net/ubuntu/+source/linux-azure/5.4.0-1077.80 launchpad.net/ubuntu/+source/linux-azure-fde/5.4.0-1076.79+cvm1.1 launchpad.net/ubuntu/+source/linux-gcp/5.4.0-1072.77 launchpad.net/ubuntu/+source/linux-gke/5.4.0-1068.71 launchpad.net/ubuntu/+source/linux-gkeop/5.4.0-1039.40 launchpad.net/ubuntu/+source/linux-ibm/5.4.0-1020.22 launchpad.net/ubuntu/+source/linux-kvm/5.4.0-1062.65 launchpad.net/ubuntu/+source/linux-oracle/5.4.0-1070.76 launchpad.net/ubuntu/+source/linux-raspi/5.4.0-1059.67 launchpad.net/ubuntu/+source/linux-azure-5.4/5.4.0-1077.80~18.04.1 launchpad.net/ubuntu/+source/linux-gcp-5.4/5.4.0-1072.77~18.04.1 launchpad.net/ubuntu/+source/linux-gke-5.4/5.4.0-1068.71~18.04.1 launchpad.net/ubuntu/+source/linux-gkeop-5.4/5.4.0-1039.40~18.04.1 launchpad.net/ubuntu/+source/linux-hwe-5.4/5.4.0-109.123~18.04.1 launchpad.net/ubuntu/+source/linux-ibm-5.4/5.4.0-1020.22~18.04.1 launchpad.net/ubuntu/+source/linux-oracle-5.4/5.4.0-1070.76~18.04.1 launchpad.net/ubuntu/+source/linux-raspi-5.4/5.4.0-1059.66~18.04.1