USN-3879-1: Linux kernel vulnerabilities<\/p>\n
A security issue affects these releases of Ubuntu and its derivatives:<\/p>\n
Several security issues were fixed in the Linux kernel.<\/p>\n
Wen Xu discovered that the ext4 file system implementation in the Linux
\nkernel could possibly perform an out of bounds write when updating the
\njournal for an inline file. An attacker could use this to construct a
\nmalicious ext4 image that, when mounted, could cause a denial of service
\n(system crash). (CVE-2018-10883)<\/p>\n
Vasily Averin and Pavel Tikhomirov discovered that the cleancache subsystem
\nof the Linux kernel did not properly initialize new files in some
\nsituations. A local attacker could use this to expose sensitive
\ninformation. (CVE-2018-16862)<\/p>\n
Wei Wu discovered that the KVM implementation in the Linux kernel did not
\nproperly ensure that ioapics were initialized. A local attacker could use
\nthis to cause a denial of service (system crash). (CVE-2018-19407)<\/p>\n
Mathias Payer and Hui Peng discovered a use-after-free vulnerability in the
\nAdvanced Linux Sound Architecture (ALSA) subsystem. A physically proximate
\nattacker could use this to cause a denial of service (system crash).
\n(CVE-2018-19824)<\/p>\n
Hui Peng and Mathias Payer discovered that the USB subsystem in the Linux
\nkernel did not properly handle size checks when handling an extra USB
\ndescriptor. A physically proximate attacker could use this to cause a
\ndenial of service (system crash). (CVE-2018-20169)<\/p>\n
The problem can be corrected by updating your system to the following package versions:<\/p>\n
To update your system, please follow these instructions: https:\/\/wiki.ubuntu.com\/Security\/Upgrades<\/a>.<\/p>\n After a standard system update you need to reboot your computer to make ATTENTION: Due to an unavoidable ABI change the kernel updates have Source: USN-3879-1: Linux kernel vulnerabilities<\/a><\/p>\n","protected":false},"excerpt":{"rendered":" USN-3879-1: Linux kernel vulnerabilities linux, linux-aws, linux-kvm, linux-raspi2, linux-snapdragon vulnerabilities A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 16.04 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-kvm – Linux kernel for cloud environments linux-raspi2 – Linux kernel for Raspberry Pi 2 linux-snapdragon – Linux kernel for Snapdragon processors Details Wen Xu discovered that the ext4 file system implementation in the Linux kernel could possibly perform an out of bounds write when updating the journal for an inline file. An attacker could use this to construct a malicious ext4 image that, when mounted, could cause a denial of service (system crash). (CVE-2018-10883) Vasily Averin and Pavel Tikhomirov discovered that the cleancache subsystem of the Linux kernel did [ more… ]<\/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-29207","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\/29207","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=29207"}],"version-history":[{"count":1,"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/posts\/29207\/revisions"}],"predecessor-version":[{"id":29208,"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/posts\/29207\/revisions\/29208"}],"wp:attachment":[{"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/media?parent=29207"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/categories?post=29207"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/tags?post=29207"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\nall the necessary changes.<\/p>\n
\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>\nReferences<\/h2>\n
\n