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[USN-5082-1] Linux kernel (OEM) vulnerabilities

Severity High
Affected Packages 13
CVEs 3
Info Packages Vulnerabilities

Several security issues were fixed in the Linux kernel.

Maxim Levitsky and Paolo Bonzini discovered that the KVM hypervisor
implementation for AMD processors in the Linux kernel allowed a guest VM to
disable restrictions on VMLOAD/VMSAVE in a nested guest. An attacker in a
guest VM could use this to read or write portions of the host's physical
memory. (CVE-2021-3656)

Maxim Levitsky discovered that the KVM hypervisor implementation for AMD
processors in the Linux kernel did not properly prevent a guest VM from
enabling AVIC in nested guest VMs. An attacker in a guest VM could use this
to write to portions of the host's physical memory. (CVE-2021-3653)

Norbert Slusarek discovered a race condition in the CAN BCM networking
protocol of the Linux kernel leading to multiple use-after-free
vulnerabilities. A local attacker could use this issue to execute arbitrary
code. (CVE-2021-3609)

Package Affected Version
pkg:deb/ubuntu/linux-tools-oem-20.04c?distro=focal < 5.13.0.1012.16
pkg:deb/ubuntu/linux-tools-5.13.0-1012-oem?distro=focal < 5.13.0-1012.16
pkg:deb/ubuntu/linux-oem-5.13-tools-host?distro=focal < 5.13.0-1012.16
pkg:deb/ubuntu/linux-oem-5.13-tools-5.13.0-1012?distro=focal < 5.13.0-1012.16
pkg:deb/ubuntu/linux-oem-5.13-headers-5.13.0-1012?distro=focal < 5.13.0-1012.16
pkg:deb/ubuntu/linux-oem-20.04c?distro=focal < 5.13.0.1012.16
pkg:deb/ubuntu/linux-modules-5.13.0-1012-oem?distro=focal < 5.13.0-1012.16
pkg:deb/ubuntu/linux-image-unsigned-5.13.0-1012-oem?distro=focal < 5.13.0-1012.16
pkg:deb/ubuntu/linux-image-oem-20.04c?distro=focal < 5.13.0.1012.16
pkg:deb/ubuntu/linux-image-5.13.0-1012-oem?distro=focal < 5.13.0-1012.16
pkg:deb/ubuntu/linux-headers-oem-20.04c?distro=focal < 5.13.0.1012.16
pkg:deb/ubuntu/linux-headers-5.13.0-1012-oem?distro=focal < 5.13.0-1012.16
pkg:deb/ubuntu/linux-buildinfo-5.13.0-1012-oem?distro=focal < 5.13.0-1012.16
ID
USN-5082-1
Severity
high
URL
https://ubuntu.com/security/notices/USN-5082-1
Published
2021-09-16T16:49:22
(3 years ago)
Modified
2021-09-16T16:49:22
(3 years ago)
Other Advisories
Type Package URL Namespace Name / Product Version Distribution / Platform Arch Patch / Fix
Affected pkg:deb/ubuntu/linux-tools-oem-20.04c?distro=focal ubuntu linux-tools-oem-20.04c < 5.13.0.1012.16 focal
Affected pkg:deb/ubuntu/linux-tools-5.13.0-1012-oem?distro=focal ubuntu linux-tools-5.13.0-1012-oem < 5.13.0-1012.16 focal
Affected pkg:deb/ubuntu/linux-oem-5.13-tools-host?distro=focal ubuntu linux-oem-5.13-tools-host < 5.13.0-1012.16 focal
Affected pkg:deb/ubuntu/linux-oem-5.13-tools-5.13.0-1012?distro=focal ubuntu linux-oem-5.13-tools-5.13.0-1012 < 5.13.0-1012.16 focal
Affected pkg:deb/ubuntu/linux-oem-5.13-headers-5.13.0-1012?distro=focal ubuntu linux-oem-5.13-headers-5.13.0-1012 < 5.13.0-1012.16 focal
Affected pkg:deb/ubuntu/linux-oem-20.04c?distro=focal ubuntu linux-oem-20.04c < 5.13.0.1012.16 focal
Affected pkg:deb/ubuntu/linux-modules-5.13.0-1012-oem?distro=focal ubuntu linux-modules-5.13.0-1012-oem < 5.13.0-1012.16 focal
Affected pkg:deb/ubuntu/linux-image-unsigned-5.13.0-1012-oem?distro=focal ubuntu linux-image-unsigned-5.13.0-1012-oem < 5.13.0-1012.16 focal
Affected pkg:deb/ubuntu/linux-image-oem-20.04c?distro=focal ubuntu linux-image-oem-20.04c < 5.13.0.1012.16 focal
Affected pkg:deb/ubuntu/linux-image-5.13.0-1012-oem?distro=focal ubuntu linux-image-5.13.0-1012-oem < 5.13.0-1012.16 focal
Affected pkg:deb/ubuntu/linux-headers-oem-20.04c?distro=focal ubuntu linux-headers-oem-20.04c < 5.13.0.1012.16 focal
Affected pkg:deb/ubuntu/linux-headers-5.13.0-1012-oem?distro=focal ubuntu linux-headers-5.13.0-1012-oem < 5.13.0-1012.16 focal
Affected pkg:deb/ubuntu/linux-buildinfo-5.13.0-1012-oem?distro=focal ubuntu linux-buildinfo-5.13.0-1012-oem < 5.13.0-1012.16 focal
# CVE Description CVSS EPSS EPSS Trend (30 days) Affected Products Weaknesses Security Advisories Exploits PoC Pubblication Date Modification Date
# CVE Description CVSS EPSS EPSS Trend (30 days) Affected Products Weaknesses Security Advisories PoC Pubblication Date Modification Date