{"id":35894,"date":"2020-03-17T10:41:31","date_gmt":"2020-03-17T01:41:31","guid":{"rendered":"https:\/\/jirak.net\/wp\/usn-4303-2-linux-kernel-hwe-vulnerability\/"},"modified":"2020-03-17T11:34:23","modified_gmt":"2020-03-17T02:34:23","slug":"usn-4303-2-linux-kernel-hwe-vulnerability","status":"publish","type":"post","link":"https:\/\/jirak.net\/wp\/usn-4303-2-linux-kernel-hwe-vulnerability\/","title":{"rendered":"USN-4303-2: Linux kernel (HWE) vulnerability"},"content":{"rendered":"<p>USN-4303-2: Linux kernel (HWE) vulnerability<\/p>\n<h2 id=\"linux-lts-xenial-linux-aws-vulnerability\">linux-lts-xenial, linux-aws vulnerability<\/h2>\n<p>A security issue affects these releases of Ubuntu and its derivatives:<\/p>\n<ul>\n<li>Ubuntu 14.04 ESM<\/li>\n<\/ul>\n<h3 id=\"summary\">Summary<\/h3>\n<p>The system could be made to expose sensitive information.<\/p>\n<h3 id=\"software-description\">Software Description<\/h3>\n<ul>\n<li>linux-aws &#8211; Linux kernel for Amazon Web Services (AWS) systems<\/li>\n<li>linux-lts-xenial &#8211; Linux hardware enablement kernel from Xenial for Trusty<\/li>\n<\/ul>\n<h3 id=\"details\">Details<\/h3>\n<p>USN-4303-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04<br \/>\nLTS. This update provides the corresponding updates for the Linux<br \/>\nHardware Enablement (HWE) kernel from Ubuntu 16.04 LTS for Ubuntu<br \/>\n14.04 ESM.<\/p>\n<p>Paulo Bonzini discovered that the KVM hypervisor implementation in the<br \/>\nLinux kernel could improperly let a nested (level 2) guest access the<br \/>\nresources of a parent (level 1) guest in certain situations. An attacker<br \/>\ncould use this to expose sensitive information.<\/p>\n<h2 id=\"update-instructions\">Update instructions<\/h2>\n<p>The problem can be corrected by updating your system to the following package versions:<\/p>\n<dl>\n<dt>Ubuntu 14.04 ESM<\/dt>\n<dd>linux-image-4.4.0-1064-aws &#8211; 4.4.0-1064.68<\/dd>\n<dd>linux-image-4.4.0-176-generic &#8211; 4.4.0-176.206~14.04.1<\/dd>\n<dd>linux-image-4.4.0-176-generic-lpae &#8211; 4.4.0-176.206~14.04.1<\/dd>\n<dd>linux-image-4.4.0-176-lowlatency &#8211; 4.4.0-176.206~14.04.1<\/dd>\n<dd>linux-image-4.4.0-176-powerpc-e500mc &#8211; 4.4.0-176.206~14.04.1<\/dd>\n<dd>linux-image-4.4.0-176-powerpc-smp &#8211; 4.4.0-176.206~14.04.1<\/dd>\n<dd>linux-image-4.4.0-176-powerpc64-emb &#8211; 4.4.0-176.206~14.04.1<\/dd>\n<dd>linux-image-4.4.0-176-powerpc64-smp &#8211; 4.4.0-176.206~14.04.1<\/dd>\n<dd>linux-image-aws &#8211; 4.4.0.1064.65<\/dd>\n<dd>linux-image-generic-lpae-lts-xenial &#8211; 4.4.0.176.155<\/dd>\n<dd>linux-image-generic-lts-xenial &#8211; 4.4.0.176.155<\/dd>\n<dd>linux-image-lowlatency-lts-xenial &#8211; 4.4.0.176.155<\/dd>\n<dd>linux-image-powerpc-e500mc-lts-xenial &#8211; 4.4.0.176.155<\/dd>\n<dd>linux-image-powerpc-smp-lts-xenial &#8211; 4.4.0.176.155<\/dd>\n<dd>linux-image-powerpc64-emb-lts-xenial &#8211; 4.4.0.176.155<\/dd>\n<dd>linux-image-powerpc64-smp-lts-xenial &#8211; 4.4.0.176.155<\/dd>\n<dd>linux-image-virtual-lts-xenial &#8211; 4.4.0.176.155<\/dd>\n<\/dl>\n<p>To update your system, please follow these instructions: <a href=\"https:\/\/wiki.ubuntu.com\/Security\/Upgrades\">https:\/\/wiki.ubuntu.com\/Security\/Upgrades<\/a>.<\/p>\n<p>After a standard system update you need to reboot your computer to make<br \/>\nall the necessary changes.<\/p>\n<p>ATTENTION: Due to an unavoidable ABI change the kernel updates have<br \/>\nbeen given a new version number, which requires you to recompile and<br \/>\nreinstall all third party kernel modules you might have installed.<br \/>\nUnless you manually uninstalled the standard kernel metapackages<br \/>\n(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,<br \/>\nlinux-powerpc), a standard system upgrade will automatically perform<br \/>\nthis as well.<\/p>\n<h2 id=\"references\">References<\/h2>\n<ul>\n<li><a href=\"https:\/\/usn.ubuntu.com\/usn\/usn-4303-1\">USN-4303-1<\/a><\/li>\n<li><a href=\"https:\/\/people.canonical.com\/~ubuntu-security\/cve\/CVE-2020-2732\">CVE-2020-2732<\/a><\/li>\n<\/ul>\n<p>Source: <a href=\"https:\/\/usn.ubuntu.com\/4303-2\/\" target=\"_blank\" rel=\"noopener noreferrer\">USN-4303-2: Linux kernel (HWE) vulnerability<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<div class=\"mh-excerpt\"><p>USN-4303-2: Linux kernel (HWE) vulnerability linux-lts-xenial, linux-aws vulnerability A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 14.04 ESM Summary The system could be made to expose sensitive information. Software Description linux-aws &#8211; Linux kernel for Amazon Web Services (AWS) systems linux-lts-xenial &#8211; Linux hardware enablement kernel from Xenial for Trusty Details USN-4303-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement (HWE) kernel from Ubuntu 16.04 LTS for Ubuntu 14.04 ESM. Paulo Bonzini discovered that the KVM hypervisor implementation in the Linux kernel could improperly let a nested (level 2) guest access the resources of a parent (level 1) guest in certain situations. An attacker could use this to expose sensitive information. Update instructions The problem can be corrected by updating your system to <a class=\"mh-excerpt-more\" href=\"https:\/\/jirak.net\/wp\/usn-4303-2-linux-kernel-hwe-vulnerability\/\" title=\"USN-4303-2: Linux kernel (HWE) vulnerability\">[ more&#8230; ]<\/a><\/p>\n<\/div>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[586],"tags":[587],"class_list":["post-35894","post","type-post","status-publish","format-standard","hentry","category-ubuntu-usn","tag-ubuntu-usn"],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/posts\/35894","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/comments?post=35894"}],"version-history":[{"count":1,"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/posts\/35894\/revisions"}],"predecessor-version":[{"id":35895,"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/posts\/35894\/revisions\/35895"}],"wp:attachment":[{"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/media?parent=35894"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/categories?post=35894"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/tags?post=35894"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}