=========================================================================
\nUbuntu Security Notice USN-5518-1
\nJuly 14, 2022<\/p>\n
linux, linux-aws, linux-azure, linux-gcp, linux-gke, linux-ibm, linux-kvm,
\nlinux-lowlatency, linux-oracle vulnerabilities
\n=========================================================================
\nA security issue affects these releases of Ubuntu and its derivatives:<\/p>\n
– Ubuntu 22.04 LTS<\/p>\n
Summary:<\/p>\n
Several security issues were fixed in the Linux kernel.<\/p>\n
Software Description:
\n– linux: Linux kernel
\n– linux-aws: Linux kernel for Amazon Web Services (AWS) systems
\n– linux-azure: Linux kernel for Microsoft Azure Cloud systems
\n– linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems
\n– linux-gke: Linux kernel for Google Container Engine (GKE) systems
\n– linux-ibm: Linux kernel for IBM cloud systems
\n– linux-kvm: Linux kernel for cloud environments
\n– linux-lowlatency: Linux low latency kernel
\n– linux-oracle: Linux kernel for Oracle Cloud systems<\/p>\n
Details:<\/p>\n
It was discovered that the eBPF implementation in the Linux kernel did not
\nproperly prevent writes to kernel objects in BPF_BTF_LOAD commands. A
\nprivileged local attacker could use this to cause a denial of service
\n(system crash) or possibly execute arbitrary code. (CVE-2022-0500)<\/p>\n
It was discovered that the Marvell NFC device driver implementation in the
\nLinux kernel did not properly perform memory cleanup operations in some
\nsituations, leading to a use-after-free vulnerability. A local attacker
\ncould possibly use this to cause a denial of service (system) or execute
\narbitrary code. (CVE-2022-1734)<\/p>\n
Yongkang Jia discovered that the KVM hypervisor implementation in the Linux
\nkernel did not properly handle guest TLB mapping invalidation requests in
\nsome situations. An attacker in a guest VM could use this to cause a denial
\nof service in the host OS (system crash). (CVE-2022-1789)<\/p>\n
Duoming Zhou discovered a race condition in the NFC subsystem in the Linux
\nkernel, leading to a use-after-free vulnerability. A privileged local
\nattacker could use this to cause a denial of service (system crash) or
\npossibly execute arbitrary code. (CVE-2022-1974)<\/p>\n
Duoming Zhou discovered that the NFC subsystem in the Linux kernel did not
\nproperly prevent context switches from occurring during certain atomic
\ncontext operations. A privileged local attacker could use this to cause a
\ndenial of service (system crash). (CVE-2022-1975)<\/p>\n
Minh Yuan discovered that the floppy driver in the Linux kernel contained a
\nrace condition in some situations, leading to a use-after-free
\nvulnerability. A local attacker could use this to cause a denial of service
\n(system crash) or possibly execute arbitrary code. (CVE-2022-33981)<\/p>\n
Update instructions:<\/p>\n
The problem can be corrected by updating your system to the following
\npackage versions:<\/p>\n
Ubuntu 22.04 LTS:
\nlinux-image-5.15.0-1010-ibm 5.15.0-1010.12
\nlinux-image-5.15.0-1011-gke 5.15.0-1011.14
\nlinux-image-5.15.0-1013-gcp 5.15.0-1013.18
\nlinux-image-5.15.0-1013-kvm 5.15.0-1013.16
\nlinux-image-5.15.0-1013-oracle 5.15.0-1013.17
\nlinux-image-5.15.0-1014-azure 5.15.0-1014.17
\nlinux-image-5.15.0-1015-aws 5.15.0-1015.19
\nlinux-image-5.15.0-41-generic 5.15.0-41.44
\nlinux-image-5.15.0-41-generic-64k 5.15.0-41.44
\nlinux-image-5.15.0-41-generic-lpae 5.15.0-41.44
\nlinux-image-5.15.0-41-lowlatency 5.15.0-41.44
\nlinux-image-5.15.0-41-lowlatency-64k 5.15.0-41.44
\nlinux-image-aws 5.15.0.1015.15
\nlinux-image-azure 5.15.0.1014.13
\nlinux-image-gcp 5.15.0.1013.11
\nlinux-image-generic 5.15.0.41.43
\nlinux-image-generic-64k 5.15.0.41.43
\nlinux-image-generic-64k-hwe-22.04 5.15.0.41.43
\nlinux-image-generic-hwe-22.04 5.15.0.41.43
\nlinux-image-generic-lpae 5.15.0.41.43
\nlinux-image-generic-lpae-hwe-22.04 5.15.0.41.43
\nlinux-image-gke 5.15.0.1011.14
\nlinux-image-gke-5.15 5.15.0.1011.14
\nlinux-image-ibm 5.15.0.1010.9
\nlinux-image-kvm 5.15.0.1013.11
\nlinux-image-lowlatency 5.15.0.41.40
\nlinux-image-lowlatency-64k 5.15.0.41.40
\nlinux-image-lowlatency-64k-hwe-22.04 5.15.0.41.40
\nlinux-image-lowlatency-hwe-22.04 5.15.0.41.40
\nlinux-image-oem-20.04 5.15.0.41.43
\nlinux-image-oracle 5.15.0.1013.11
\nlinux-image-virtual 5.15.0.41.43
\nlinux-image-virtual-hwe-22.04 5.15.0.41.43<\/p>\n
After a standard system update you need to reboot your computer to make
\nall the necessary changes.<\/p>\n
ATTENTION: Due to an unavoidable ABI change the kernel updates have
\nbeen given a new version number, which requires you to recompile and
\nreinstall all third party kernel modules you might have installed.
\nUnless you manually uninstalled the standard kernel metapackages
\n(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
\nlinux-powerpc), a standard system upgrade will automatically perform
\nthis as well.<\/p>\n
References:
\nhttps:\/\/ubuntu.com\/security\/notices\/USN-5518-1
\nCVE-2022-0500, CVE-2022-1734, CVE-2022-1789, CVE-2022-1974,
\nCVE-2022-1975, CVE-2022-33981<\/p>\n
Package Information:
\nhttps:\/\/launchpad.net\/ubuntu\/+source\/linux\/5.15.0-41.44
\nhttps:\/\/launchpad.net\/ubuntu\/+source\/linux-aws\/5.15.0-1015.19
\nhttps:\/\/launchpad.net\/ubuntu\/+source\/linux-azure\/5.15.0-1014.17
\nhttps:\/\/launchpad.net\/ubuntu\/+source\/linux-gcp\/5.15.0-1013.18
\nhttps:\/\/launchpad.net\/ubuntu\/+source\/linux-gke\/5.15.0-1011.14
\nhttps:\/\/launchpad.net\/ubuntu\/+source\/linux-ibm\/5.15.0-1010.12
\nhttps:\/\/launchpad.net\/ubuntu\/+source\/linux-kvm\/5.15.0-1013.16
\nhttps:\/\/launchpad.net\/ubuntu\/+source\/linux-lowlatency\/5.15.0-41.44
\nhttps:\/\/launchpad.net\/ubuntu\/+source\/linux-oracle\/5.15.0-1013.17<\/p>\n","protected":false},"excerpt":{"rendered":"
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