=========================================================================
\nUbuntu Security Notice USN-5485-2
\nJuly 01, 2022<\/p>\n
linux-oem-5.14 vulnerabilities
\n=========================================================================
\nA security issue affects these releases of Ubuntu and its derivatives:<\/p>\n
– Ubuntu 20.04 LTS<\/p>\n
Summary:<\/p>\n
Several security issues were mitigated in the Linux kernel.<\/p>\n
Software Description:
\n– linux-oem-5.14: Linux kernel for OEM systems<\/p>\n
Details:<\/p>\n
It was discovered that some Intel processors did not completely perform
\ncleanup actions on multi-core shared buffers. A local attacker could
\npossibly use this to expose sensitive information. (CVE-2022-21123)<\/p>\n
It was discovered that some Intel processors did not completely perform
\ncleanup actions on microarchitectural fill buffers. A local attacker could
\npossibly use this to expose sensitive information. (CVE-2022-21125)<\/p>\n
It was discovered that some Intel processors did not properly perform
\ncleanup during specific special register write operations. A local attacker
\ncould possibly use this to expose sensitive information. (CVE-2022-21166)<\/p>\n
Update instructions:<\/p>\n
The problem can be corrected by updating your system to the following
\npackage versions:<\/p>\n
Ubuntu 20.04 LTS:
\nlinux-image-5.14.0-1044-oem 5.14.0-1044.49
\nlinux-image-oem-20.04 5.14.0.1044.40
\nlinux-image-oem-20.04b 5.14.0.1044.40
\nlinux-image-oem-20.04c 5.14.0.1044.40
\nlinux-image-oem-20.04d 5.14.0.1044.40<\/p>\n
Please note that fully mitigating processor vulnerabilities requires
\ncorresponding processor microcode\/firmware updates.<\/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-5485-2
\nhttps:\/\/ubuntu.com\/security\/notices\/USN-5485-1
\nCVE-2022-21123, CVE-2022-21125, CVE-2022-21166<\/p>\n
Package Information:
\nhttps:\/\/launchpad.net\/ubuntu\/+source\/linux-oem-5.14\/5.14.0-1044.49<\/p>\n","protected":false},"excerpt":{"rendered":"
========================================================================= Ubuntu Security Notice USN-5485-2 July 01, 2022 linux-oem-5.14 vulnerabilities ========================================================================= A security issue affects these releases of Ubuntu and its derivatives: – Ubuntu 20.04 LTS Summary: Several security issues were mitigated in the Linux kernel. Software Description: – linux-oem-5.14: Linux kernel for OEM systems Details: It was discovered that some Intel processors did not …<\/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-26530","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/26530","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=26530"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/26530\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=26530"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=26530"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=26530"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}