[USN-5468-1] Linux kernel vulnerabilities


========================================================================== Ubuntu Security Notice USN-5468-1 June 08, 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-intel-5.13, linux-kvm, 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-intel-5.13: Linux kernel for Intel IOTG – linux-oracle-5.13: Linux kernel for Oracle Cloud systems
Details:
It was discovered that the Linux kernel did not properly restrict access to the kernel debugger when booted in secure boot environments. A privileged attacker could use this to bypass UEFI Secure Boot restrictions. (CVE-2022-21499)
Aaron Adams discovered that the netfilter subsystem in the Linux kernel did not properly handle the removal of stateful expressions in some situations, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or execute arbitrary code. (CVE-2022-1966)
Qiuhao Li, Gaoning Pan and Yongkang Jia discovered that the KVM implementation in the Linux kernel did not properly perform guest page table updates in some situations. An attacker in a guest vm could possibly use this to crash the host OS. (CVE-2022-1158)
Ziming Zhang discovered that the netfilter subsystem in the Linux kernel did not properly validate sets with multiple ranged fields. A local attacker could use this to cause a denial of service or execute arbitrary code. (CVE-2022-1972)
It was discovered that the USB Gadget file system interface in the Linux kernel contained a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-24958)
It was discovered that the EMS CAN/USB interface implementation in the Linux kernel contained a double-free vulnerability when handling certain error conditions. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2022-28390)
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 21.10: linux-image-5.13.0-1027-kvm 5.13.0-1027.29 linux-image-5.13.0-1028-aws 5.13.0-1028.31 linux-image-5.13.0-1028-azure 5.13.0-1028.33 linux-image-5.13.0-1030-gcp 5.13.0-1030.36 linux-image-5.13.0-1031-raspi 5.13.0-1031.34 linux-image-5.13.0-1031-raspi-nolpae 5.13.0-1031.34 linux-image-5.13.0-1033-oracle 5.13.0-1033.39 linux-image-5.13.0-48-generic 5.13.0-48.54 linux-image-5.13.0-48-generic-64k 5.13.0-48.54 linux-image-5.13.0-48-generic-lpae 5.13.0-48.54 linux-image-5.13.0-48-lowlatency 5.13.0-48.54 linux-image-aws 5.13.0.1028.28 linux-image-azure 5.13.0.1028.27 linux-image-gcp 5.13.0.1030.27 linux-image-generic 5.13.0.48.56 linux-image-generic-64k 5.13.0.48.56 linux-image-generic-lpae 5.13.0.48.56 linux-image-gke 5.13.0.1030.27 linux-image-kvm 5.13.0.1027.26 linux-image-lowlatency 5.13.0.48.56 linux-image-oem-20.04 5.13.0.48.56 linux-image-oracle 5.13.0.1033.32 linux-image-raspi 5.13.0.1031.35 linux-image-raspi-nolpae 5.13.0.1031.35 linux-image-virtual 5.13.0.48.56
Ubuntu 20.04 LTS: linux-image-5.13.0-1014-intel 5.13.0-1014.15 linux-image-5.13.0-1028-aws 5.13.0-1028.31~20.04.1 linux-image-5.13.0-1028-azure 5.13.0-1028.33~20.04.1 linux-image-5.13.0-1030-gcp 5.13.0-1030.36~20.04.1 linux-image-5.13.0-1033-oracle 5.13.0-1033.39~20.04.1 linux-image-5.13.0-48-generic 5.13.0-48.54~20.04.1 linux-image-5.13.0-48-generic-64k 5.13.0-48.54~20.04.1 linux-image-5.13.0-48-generic-lpae 5.13.0-48.54~20.04.1 linux-image-5.13.0-48-lowlatency 5.13.0-48.54~20.04.1 linux-image-aws 5.13.0.1028.31~20.04.22 linux-image-azure 5.13.0.1028.33~20.04.17 linux-image-gcp 5.13.0.1030.36~20.04.1 linux-image-generic-64k-hwe-20.04 5.13.0.48.54~20.04.30 linux-image-generic-hwe-20.04 5.13.0.48.54~20.04.30 linux-image-generic-lpae-hwe-20.04 5.13.0.48.54~20.04.30 linux-image-intel 5.13.0.1014.14 linux-image-lowlatency-hwe-20.04 5.13.0.48.54~20.04.30 linux-image-oracle 5.13.0.1033.39~20.04.1 linux-image-virtual-hwe-20.04 5.13.0.48.54~20.04.30
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-5468-1 CVE-2022-1158, CVE-2022-1966, CVE-2022-1972, CVE-2022-21499, CVE-2022-24958, CVE-2022-28390
Package Information: launchpad.net/ubuntu/+source/linux/5.13.0-48.54 launchpad.net/ubuntu/+source/linux-aws/5.13.0-1028.31 launchpad.net/ubuntu/+source/linux-azure/5.13.0-1028.33 launchpad.net/ubuntu/+source/linux-gcp/5.13.0-1030.36 launchpad.net/ubuntu/+source/linux-kvm/5.13.0-1027.29 launchpad.net/ubuntu/+source/linux-oracle/5.13.0-1033.39 launchpad.net/ubuntu/+source/linux-raspi/5.13.0-1031.34 launchpad.net/ubuntu/+source/linux-aws-5.13/5.13.0-1028.31~20.04.1 launchpad.net/ubuntu/+source/linux-azure-5.13/5.13.0-1028.33~20.04.1 launchpad.net/ubuntu/+source/linux-gcp-5.13/5.13.0-1030.36~20.04.1 launchpad.net/ubuntu/+source/linux-hwe-5.13/5.13.0-48.54~20.04.1 launchpad.net/ubuntu/+source/linux-intel-5.13/5.13.0-1014.15 launchpad.net/ubuntu/+source/linux-oracle-5.13/5.13.0-1033.39~20.04.1