USN-4017-1: Linux kernel vulnerabilities<\/p>\n
A security issue affects these releases of Ubuntu and its derivatives:<\/p>\n
The system could be made to crash if it received specially crafted
\nnetwork traffic.<\/p>\n
Jonathan Looney discovered that the TCP retransmission queue implementation
\nin the Linux kernel could be fragmented when handling certain TCP Selective
\nAcknowledgment (SACK) sequences. A remote attacker could use this to cause
\na denial of service. (CVE-2019-11478)<\/p>\n
Jonathan Looney discovered that an integer overflow existed in the Linux
\nkernel when handling TCP Selective Acknowledgments (SACKs). A remote
\nattacker could use this to cause a denial of service (system crash).
\n(CVE-2019-11477)<\/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-4017-1: Linux kernel vulnerabilities<\/a><\/p>\n","protected":false},"excerpt":{"rendered":" USN-4017-1: Linux kernel vulnerabilities linux, linux-aws, linux-aws-hwe, linux-azure, linux-gcp, linux-hwe, linux-kvm, linux-oem, linux-oracle, linux-raspi2, linux-snapdragon vulnerabilities A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 19.04 Ubuntu 18.10 Ubuntu 18.04 LTS Ubuntu 16.04 LTS Summary The system could be made to crash if it received specially crafted network traffic. Software Description linux – Linux kernel linux-aws – Linux kernel for Amazon Web Services (AWS) systems linux-gcp – Linux kernel for Google Cloud Platform (GCP) systems linux-kvm – Linux kernel for cloud environments linux-raspi2 – Linux kernel for Raspberry Pi 2 linux-snapdragon – Linux kernel for Snapdragon processors linux-azure – Linux kernel for Microsoft Azure Cloud systems linux-hwe – Linux hardware enablement (HWE) kernel linux-oem – Linux kernel for OEM processors linux-oracle – Linux kernel for Oracle Cloud systems linux-aws-hwe – Linux kernel for Amazon Web Services (AWS-HWE) [ 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-31575","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\/31575","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=31575"}],"version-history":[{"count":1,"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/posts\/31575\/revisions"}],"predecessor-version":[{"id":31576,"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/posts\/31575\/revisions\/31576"}],"wp:attachment":[{"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/media?parent=31575"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/categories?post=31575"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/tags?post=31575"}],"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