==========================================================================
\nUbuntu Security Notice USN-6045-1
\nApril 26, 2023<\/p>\n
linux, linux-aws, linux-kvm, linux-lts-xenial vulnerabilities
\n==========================================================================<\/p>\n
A security issue affects these releases of Ubuntu and its derivatives:<\/p>\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-kvm: Linux kernel for cloud environments
\n– linux-lts-xenial: Linux hardware enablement kernel from Xenial for Trusty<\/p>\n
Details:<\/p>\n
It was discovered that the Traffic-Control Index (TCINDEX) implementation
\nin the Linux kernel did not properly perform filter deactivation in some
\nsituations. A local attacker could possibly use this to gain elevated
\nprivileges. Please note that with the fix for this CVE, kernel support for
\nthe TCINDEX classifier has been removed. (CVE-2023-1829)<\/p>\n
Gwnaun Jung discovered that the SFB packet scheduling implementation in the
\nLinux kernel contained a use-after-free vulnerability. A local attacker
\ncould use this to cause a denial of service (system crash) or possibly
\nexecute arbitrary code. (CVE-2022-3586)<\/p>\n
Zheng Wang and Zhuorao Yang discovered that the RealTek RTL8712U wireless
\ndriver in the Linux kernel contained a use-after-free vulnerability. A
\nlocal attacker could use this to cause a denial of service (system crash)
\nor possibly execute arbitrary code. (CVE-2022-4095)<\/p>\n
It was discovered that the TIPC protocol implementation in the Linux kernel
\ndid not properly validate the queue of socket buffers (skb) when handling
\ncertain UDP packets. A remote attacker could use this to cause a denial of
\nservice. (CVE-2023-1390)<\/p>\n
It was discovered that the Xircom PCMCIA network device driver in the Linux
\nkernel did not properly handle device removal events. A physically
\nproximate attacker could use this to cause a denial of service (system
\ncrash). (CVE-2023-1670)<\/p>\n
Update instructions:<\/p>\n
The problem can be corrected by updating your system to the following
\npackage versions:<\/p>\n
Ubuntu 16.04 ESM:
\nlinux-image-4.4.0-1119-kvm 4.4.0-1119.129
\nlinux-image-4.4.0-1156-aws 4.4.0-1156.171
\nlinux-image-4.4.0-240-generic 4.4.0-240.274
\nlinux-image-4.4.0-240-lowlatency 4.4.0-240.274
\nlinux-image-aws 4.4.0.1156.160
\nlinux-image-generic 4.4.0.240.246
\nlinux-image-generic-lts-xenial 4.4.0.240.246
\nlinux-image-kvm 4.4.0.1119.116
\nlinux-image-lowlatency 4.4.0.240.246
\nlinux-image-lowlatency-lts-xenial 4.4.0.240.246
\nlinux-image-virtual 4.4.0.240.246
\nlinux-image-virtual-lts-xenial 4.4.0.240.246<\/p>\n
Ubuntu 14.04 ESM:
\nlinux-image-4.4.0-1118-aws 4.4.0-1118.124
\nlinux-image-4.4.0-240-generic 4.4.0-240.274~14.04.1
\nlinux-image-4.4.0-240-lowlatency 4.4.0-240.274~14.04.1
\nlinux-image-aws 4.4.0.1118.115
\nlinux-image-generic-lts-xenial 4.4.0.240.208
\nlinux-image-lowlatency-lts-xenial 4.4.0.240.208
\nlinux-image-virtual-lts-xenial 4.4.0.240.208<\/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-6045-1
\nCVE-2022-3586, CVE-2022-4095, CVE-2023-1390, CVE-2023-1670,
\nCVE-2023-1829<\/p>\n","protected":false},"excerpt":{"rendered":"
========================================================================== Ubuntu Security Notice USN-6045-1 April 26, 2023 linux, linux-aws, linux-kvm, linux-lts-xenial vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: – Ubuntu 16.04 ESM – Ubuntu 14.04 ESM Summary: Several security issues were fixed in the Linux kernel. Software Description: – linux: Linux kernel – linux-aws: Linux kernel for Amazon …<\/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-40930","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/40930","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=40930"}],"version-history":[{"count":1,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/40930\/revisions"}],"predecessor-version":[{"id":40977,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/40930\/revisions\/40977"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=40930"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=40930"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=40930"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}