==========================================================================
\nUbuntu Security Notice USN-5298-1
\nFebruary 22, 2022<\/p>\n
linux, linux-aws, linux-aws-hwe, linux-azure, linux-azure-4.15,
\nlinux-dell300x, linux-gcp, linux-gcp-4.15, linux-hwe, linux-oracle,
\nlinux-snapdragon vulnerabilities
\n==========================================================================<\/p>\n
A security issue affects these releases of Ubuntu and its derivatives:<\/p>\n
– Ubuntu 18.04 LTS
\n– Ubuntu 16.04 ESM
\n– Ubuntu 14.04 ESM<\/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-4.15: Linux kernel for Microsoft Azure Cloud systems
\n– linux-dell300x: Linux kernel for Dell 300x platforms
\n– linux-gcp-4.15: Linux kernel for Google Cloud Platform (GCP) systems
\n– linux-kvm: Linux kernel for cloud environments
\n– linux-oracle: Linux kernel for Oracle Cloud systems
\n– linux-snapdragon: Linux kernel for Qualcomm Snapdragon processors
\n– linux-aws-hwe: Linux kernel for Amazon Web Services (AWS-HWE) systems
\n– linux-azure: Linux kernel for Microsoft Azure Cloud systems
\n– linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems
\n– linux-hwe: Linux hardware enablement (HWE) kernel<\/p>\n
Details:<\/p>\n
It was discovered that the Packet network protocol implementation in the
\nLinux kernel contained a double-free vulnerability. A local attacker could
\nuse this to cause a denial of service (system crash) or possibly execute
\narbitrary code. (CVE-2021-22600)<\/p>\n
J\u00fcrgen Gro\u00df discovered that the Xen subsystem within the Linux kernel did
\nnot adequately limit the number of events driver domains (unprivileged PV
\nbackends) could send to other guest VMs. An attacker in a driver domain
\ncould use this to cause a denial of service in other guest VMs.
\n(CVE-2021-28711, CVE-2021-28712, CVE-2021-28713)<\/p>\n
J\u00fcrgen Gro\u00df discovered that the Xen network backend driver in the Linux
\nkernel did not adequately limit the amount of queued packets when a guest
\ndid not process them. An attacker in a guest VM can use this to cause a
\ndenial of service (excessive kernel memory consumption) in the network
\nbackend domain. (CVE-2021-28714, CVE-2021-28715)<\/p>\n
Szymon Heidrich discovered that the USB Gadget subsystem in the Linux
\nkernel did not properly restrict the size of control requests for certain
\ngadget types, leading to possible out of bounds reads or writes. A local
\nattacker could use this to cause a denial of service (system crash) or
\npossibly execute arbitrary code. (CVE-2021-39685)<\/p>\n
Jann Horn discovered a race condition in the Unix domain socket
\nimplementation in the Linux kernel that could result in a read-after-free.
\nA local attacker could use this to cause a denial of service (system crash)
\nor possibly execute arbitrary code. (CVE-2021-4083)<\/p>\n
Kirill Tkhai discovered that the XFS file system implementation in the
\nLinux kernel did not calculate size correctly when pre-allocating space in
\nsome situations. A local attacker could use this to expose sensitive
\ninformation. (CVE-2021-4155)<\/p>\n
Lin Ma discovered that the NFC Controller Interface (NCI) implementation in
\nthe Linux kernel contained a race condition, 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-2021-4202)<\/p>\n
Sushma Venkatesh Reddy discovered that the Intel i915 graphics driver in
\nthe Linux kernel did not perform a GPU TLB flush in some situations. A
\nlocal attacker could use this to cause a denial of service or possibly
\nexecute arbitrary code. (CVE-2022-0330)<\/p>\n
It was discovered that the VMware Virtual GPU driver in the Linux kernel
\ndid not properly handle certain failure conditions, leading to a stale
\nentry in the file descriptor table. A local attacker could use this to
\nexpose sensitive information or possibly gain administrative privileges.
\n(CVE-2022-22942)<\/p>\n
Update instructions:<\/p>\n
The problem can be corrected by updating your system to the following
\npackage versions:<\/p>\n
Ubuntu 18.04 LTS:
\nlinux-image-4.15.0-1035-dell300x 4.15.0-1035.40
\nlinux-image-4.15.0-1087-oracle 4.15.0-1087.95
\nlinux-image-4.15.0-1107-kvm 4.15.0-1107.109
\nlinux-image-4.15.0-1116-gcp 4.15.0-1116.130
\nlinux-image-4.15.0-1120-snapdragon 4.15.0-1120.129
\nlinux-image-4.15.0-1131-azure 4.15.0-1131.144
\nlinux-image-4.15.0-169-generic 4.15.0-169.177
\nlinux-image-4.15.0-169-generic-lpae 4.15.0-169.177
\nlinux-image-4.15.0-169-lowlatency 4.15.0-169.177
\nlinux-image-aws-lts-18.04 4.15.0.1121.124
\nlinux-image-azure-lts-18.04 4.15.0.1131.104
\nlinux-image-dell300x 4.15.0.1035.37
\nlinux-image-gcp-lts-18.04 4.15.0.1116.135
\nlinux-image-generic 4.15.0.169.158
\nlinux-image-generic-lpae 4.15.0.169.158
\nlinux-image-kvm 4.15.0.1107.103
\nlinux-image-lowlatency 4.15.0.169.158
\nlinux-image-oracle-lts-18.04 4.15.0.1087.97
\nlinux-image-snapdragon 4.15.0.1120.123
\nlinux-image-virtual 4.15.0.169.158<\/p>\n
Ubuntu 16.04 ESM:
\nlinux-image-4.15.0-1087-oracle 4.15.0-1087.95~16.04.1
\nlinux-image-4.15.0-1116-gcp 4.15.0-1116.130~16.04.1
\nlinux-image-4.15.0-1131-azure 4.15.0-1131.144~16.04.1
\nlinux-image-4.15.0-169-generic 4.15.0-169.177~16.04.1
\nlinux-image-4.15.0-169-lowlatency 4.15.0-169.177~16.04.1
\nlinux-image-aws-hwe 4.15.0.1120.111
\nlinux-image-azure 4.15.0.1131.122
\nlinux-image-gcp 4.15.0.1116.117
\nlinux-image-generic-hwe-16.04 4.15.0.169.161
\nlinux-image-gke 4.15.0.1116.117
\nlinux-image-lowlatency-hwe-16.04 4.15.0.169.161
\nlinux-image-oem 4.15.0.169.161
\nlinux-image-oracle 4.15.0.1087.75
\nlinux-image-virtual-hwe-16.04 4.15.0.169.161<\/p>\n
Ubuntu 14.04 ESM:
\nlinux-image-4.15.0-1131-azure 4.15.0-1131.144~14.04.1
\nlinux-image-azure 4.15.0.1131.104<\/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-5298-1
\nCVE-2021-22600, CVE-2021-28711, CVE-2021-28712, CVE-2021-28713,
\nCVE-2021-28714, CVE-2021-28715, CVE-2021-39685, CVE-2021-4083,
\nCVE-2021-4155, CVE-2021-4202, CVE-2022-0330, CVE-2022-22942<\/p>\n
Package Information:
\nhttps:\/\/launchpad.net\/ubuntu\/+source\/linux\/4.15.0-169.177
\nhttps:\/\/launchpad.net\/ubuntu\/+source\/linux-aws\/4.15.0-1121.129
\nhttps:\/\/launchpad.net\/ubuntu\/+source\/linux-azure-4.15\/4.15.0-1131.144
\nhttps:\/\/launchpad.net\/ubuntu\/+source\/linux-dell300x\/4.15.0-1035.40
\nhttps:\/\/launchpad.net\/ubuntu\/+source\/linux-gcp-4.15\/4.15.0-1116.130
\nhttps:\/\/launchpad.net\/ubuntu\/+source\/linux-kvm\/4.15.0-1107.109
\nhttps:\/\/launchpad.net\/ubuntu\/+source\/linux-oracle\/4.15.0-1087.95
\nhttps:\/\/launchpad.net\/ubuntu\/+source\/linux-snapdragon\/4.15.0-1120.129<\/p>\n","protected":false},"excerpt":{"rendered":"
========================================================================== Ubuntu Security Notice USN-5298-1 February 22, 2022 linux, linux-aws, linux-aws-hwe, linux-azure, linux-azure-4.15, linux-dell300x, linux-gcp, linux-gcp-4.15, linux-hwe, linux-oracle, linux-snapdragon vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: – Ubuntu 18.04 LTS – Ubuntu 16.04 ESM – Ubuntu 14.04 ESM Summary: Several security issues were fixed in the Linux kernel. Software …<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26],"tags":[],"class_list":["post-20968","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/20968","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/comments?post=20968"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/20968\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=20968"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=20968"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=20968"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}