==========================================================================
\nUbuntu Security Notice USN-6261-1
\nJuly 28, 2023<\/p>\n
linux-iot vulnerabilities
\n==========================================================================<\/p>\n
A 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 fixed in the Linux kernel.<\/p>\n
Software Description:
\n– linux-iot: Linux kernel for IoT platforms<\/p>\n
Details:<\/p>\n
It was discovered that the IP-VLAN network driver for the Linux kernel did
\nnot properly initialize memory in some situations, leading to an out-of-
\nbounds write vulnerability. An attacker could use this to cause a denial of
\nservice (system crash) or possibly execute arbitrary code. (CVE-2023-3090)<\/p>\n
Shir Tamari and Sagi Tzadik discovered that the OverlayFS implementation in
\nthe Ubuntu Linux kernel did not properly perform permission checks in
\ncertain situations. A local attacker could possibly use this to gain
\nelevated privileges. (CVE-2023-32629)<\/p>\n
It was discovered that the netfilter subsystem in the Linux kernel did not
\nproperly handle some error conditions, leading to a use-after-free
\nvulnerability. A local attacker could use this to cause a denial of service
\n(system crash) or possibly execute arbitrary code. (CVE-2023-3390)<\/p>\n
Tanguy Dubroca discovered that the netfilter subsystem in the Linux kernel
\ndid not properly handle certain pointer data type, leading to an out-of-
\nbounds write vulnerability. A privileged attacker could use this to cause a
\ndenial of service (system crash) or possibly execute arbitrary code.
\n(CVE-2023-35001)<\/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-5.4.0-1018-iot 5.4.0-1018.19<\/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-6261-1
\nCVE-2023-3090, CVE-2023-32629, CVE-2023-3390, CVE-2023-35001<\/p>\n
Package Information:
\nhttps:\/\/launchpad.net\/ubuntu\/+source\/linux-iot\/5.4.0-1018.19<\/p>\n","protected":false},"excerpt":{"rendered":"
========================================================================== Ubuntu Security Notice USN-6261-1 July 28, 2023 linux-iot vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: – Ubuntu 20.04 LTS Summary: Several security issues were fixed in the Linux kernel. Software Description: – linux-iot: Linux kernel for IoT platforms Details: It was discovered that the IP-VLAN network driver for …<\/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-45894","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/45894","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=45894"}],"version-history":[{"count":1,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/45894\/revisions"}],"predecessor-version":[{"id":45994,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/45894\/revisions\/45994"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=45894"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=45894"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=45894"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}