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[USN-4679-1] Linux kernel vulnerabilities

Severity Medium
Affected Packages 70
CVEs 6
Info Packages Vulnerabilities

Several security issues were fixed in the Linux kernel.

It was discovered that the console keyboard driver in the Linux kernel
contained a race condition. A local attacker could use this to expose
sensitive information (kernel memory). (CVE-2020-25656)

Minh Yuan discovered that the tty driver in the Linux kernel contained race
conditions when handling fonts. A local attacker could possibly use this to
expose sensitive information (kernel memory). (CVE-2020-25668)

Kiyin (尹亮) discovered that the perf subsystem in the Linux kernel did
not properly deallocate memory in some situations. A privileged attacker
could use this to cause a denial of service (kernel memory exhaustion).
(CVE-2020-25704)

Jinoh Kang discovered that the Xen event channel infrastructure in the
Linux kernel contained a race condition. An attacker in guest could
possibly use this to cause a denial of service (dom0 crash).
(CVE-2020-27675)

Daniel Axtens discovered that PowerPC RTAS implementation in the Linux
kernel did not properly restrict memory accesses in some situations. A
privileged local attacker could use this to arbitrarily modify kernel
memory, potentially bypassing kernel lockdown restrictions.
(CVE-2020-27777)

Minh Yuan discovered that the framebuffer console driver in the Linux
kernel did not properly handle fonts in some conditions. A local attacker
could use this to cause a denial of service (system crash) or possibly
expose sensitive information (kernel memory). (CVE-2020-28974)

Package Affected Version
pkg:deb/ubuntu/linux-image-virtual?distro=focal < 5.4.0.59.62
pkg:deb/ubuntu/linux-image-virtual-hwe-20.04?distro=focal < 5.4.0.59.62
pkg:deb/ubuntu/linux-image-virtual-hwe-18.04?distro=focal < 5.4.0.59.62
pkg:deb/ubuntu/linux-image-virtual-hwe-18.04?distro=bionic < 5.4.0.59.65~18.04.54
pkg:deb/ubuntu/linux-image-virtual-hwe-18.04-edge?distro=focal < 5.4.0.59.62
pkg:deb/ubuntu/linux-image-virtual-hwe-18.04-edge?distro=bionic < 5.4.0.59.65~18.04.54
pkg:deb/ubuntu/linux-image-snapdragon-hwe-18.04?distro=bionic < 5.4.0.59.65~18.04.54
pkg:deb/ubuntu/linux-image-snapdragon-hwe-18.04-edge?distro=bionic < 5.4.0.59.65~18.04.54
pkg:deb/ubuntu/linux-image-raspi?distro=focal < 5.4.0.1026.61
pkg:deb/ubuntu/linux-image-raspi2?distro=focal < 5.4.0.1026.61
pkg:deb/ubuntu/linux-image-raspi2-hwe-18.04?distro=focal < 5.4.0.1026.61
pkg:deb/ubuntu/linux-image-raspi2-hwe-18.04-edge?distro=focal < 5.4.0.1026.61
pkg:deb/ubuntu/linux-image-raspi-hwe-18.04?distro=focal < 5.4.0.1026.61
pkg:deb/ubuntu/linux-image-raspi-hwe-18.04?distro=bionic < 5.4.0.1026.30
pkg:deb/ubuntu/linux-image-raspi-hwe-18.04-edge?distro=focal < 5.4.0.1026.61
pkg:deb/ubuntu/linux-image-raspi-hwe-18.04-edge?distro=bionic < 5.4.0.1026.30
pkg:deb/ubuntu/linux-image-oracle?distro=focal < 5.4.0.1034.31
pkg:deb/ubuntu/linux-image-oracle?distro=bionic < 5.4.0.1034.36~18.04.18
pkg:deb/ubuntu/linux-image-oracle-edge?distro=bionic < 5.4.0.1034.36~18.04.18
pkg:deb/ubuntu/linux-image-oem?distro=focal < 5.4.0.59.62
pkg:deb/ubuntu/linux-image-oem?distro=bionic < 5.4.0.59.65~18.04.54
pkg:deb/ubuntu/linux-image-oem-osp1?distro=focal < 5.4.0.59.62
pkg:deb/ubuntu/linux-image-oem-osp1?distro=bionic < 5.4.0.59.65~18.04.54
pkg:deb/ubuntu/linux-image-lowlatency?distro=focal < 5.4.0.59.62
pkg:deb/ubuntu/linux-image-lowlatency-hwe-20.04?distro=focal < 5.4.0.59.62
pkg:deb/ubuntu/linux-image-lowlatency-hwe-18.04?distro=focal < 5.4.0.59.62
pkg:deb/ubuntu/linux-image-lowlatency-hwe-18.04?distro=bionic < 5.4.0.59.65~18.04.54
pkg:deb/ubuntu/linux-image-lowlatency-hwe-18.04-edge?distro=focal < 5.4.0.59.62
pkg:deb/ubuntu/linux-image-lowlatency-hwe-18.04-edge?distro=bionic < 5.4.0.59.65~18.04.54
pkg:deb/ubuntu/linux-image-kvm?distro=focal < 5.4.0.1031.29
pkg:deb/ubuntu/linux-image-gke-5.4?distro=bionic < 5.4.0.1033.35~18.04.2
pkg:deb/ubuntu/linux-image-generic?distro=focal < 5.4.0.59.62
pkg:deb/ubuntu/linux-image-generic-lpae?distro=focal < 5.4.0.59.62
pkg:deb/ubuntu/linux-image-generic-lpae-hwe-20.04?distro=focal < 5.4.0.59.62
pkg:deb/ubuntu/linux-image-generic-lpae-hwe-18.04?distro=focal < 5.4.0.59.62
pkg:deb/ubuntu/linux-image-generic-lpae-hwe-18.04?distro=bionic < 5.4.0.59.65~18.04.54
pkg:deb/ubuntu/linux-image-generic-lpae-hwe-18.04-edge?distro=focal < 5.4.0.59.62
pkg:deb/ubuntu/linux-image-generic-lpae-hwe-18.04-edge?distro=bionic < 5.4.0.59.65~18.04.54
pkg:deb/ubuntu/linux-image-generic-hwe-20.04?distro=focal < 5.4.0.59.62
pkg:deb/ubuntu/linux-image-generic-hwe-18.04?distro=focal < 5.4.0.59.62
pkg:deb/ubuntu/linux-image-generic-hwe-18.04?distro=bionic < 5.4.0.59.65~18.04.54
pkg:deb/ubuntu/linux-image-generic-hwe-18.04-edge?distro=focal < 5.4.0.59.62
pkg:deb/ubuntu/linux-image-generic-hwe-18.04-edge?distro=bionic < 5.4.0.59.65~18.04.54
pkg:deb/ubuntu/linux-image-gcp?distro=focal < 5.4.0.1033.42
pkg:deb/ubuntu/linux-image-gcp?distro=bionic < 5.4.0.1033.21
pkg:deb/ubuntu/linux-image-gcp-edge?distro=bionic < 5.4.0.1033.21
pkg:deb/ubuntu/linux-image-azure?distro=focal < 5.4.0.1035.33
pkg:deb/ubuntu/linux-image-azure?distro=bionic < 5.4.0.1035.17
pkg:deb/ubuntu/linux-image-azure-edge?distro=bionic < 5.4.0.1035.17
pkg:deb/ubuntu/linux-image-aws?distro=focal < 5.4.0.1034.35
pkg:deb/ubuntu/linux-image-aws?distro=bionic < 5.4.0.1034.19
pkg:deb/ubuntu/linux-image-aws-edge?distro=bionic < 5.4.0.1034.19
pkg:deb/ubuntu/linux-image-5.4.0-59-lowlatency?distro=focal < 5.4.0-59.65
pkg:deb/ubuntu/linux-image-5.4.0-59-lowlatency?distro=bionic < 5.4.0-59.65~18.04.1
pkg:deb/ubuntu/linux-image-5.4.0-59-generic?distro=focal < 5.4.0-59.65
pkg:deb/ubuntu/linux-image-5.4.0-59-generic?distro=bionic < 5.4.0-59.65~18.04.1
pkg:deb/ubuntu/linux-image-5.4.0-59-generic-lpae?distro=focal < 5.4.0-59.65
pkg:deb/ubuntu/linux-image-5.4.0-59-generic-lpae?distro=bionic < 5.4.0-59.65~18.04.1
pkg:deb/ubuntu/linux-image-5.4.0-1035-azure?distro=focal < 5.4.0-1035.36
pkg:deb/ubuntu/linux-image-5.4.0-1035-azure?distro=bionic < 5.4.0-1035.36~18.04.1
pkg:deb/ubuntu/linux-image-5.4.0-1034-oracle?distro=focal < 5.4.0-1034.36
pkg:deb/ubuntu/linux-image-5.4.0-1034-oracle?distro=bionic < 5.4.0-1034.36~18.04.1
pkg:deb/ubuntu/linux-image-5.4.0-1034-aws?distro=focal < 5.4.0-1034.35
pkg:deb/ubuntu/linux-image-5.4.0-1034-aws?distro=bionic < 5.4.0-1034.35~18.04.1
pkg:deb/ubuntu/linux-image-5.4.0-1033-gke?distro=bionic < 5.4.0-1033.35~18.04.1
pkg:deb/ubuntu/linux-image-5.4.0-1033-gcp?distro=focal < 5.4.0-1033.35
pkg:deb/ubuntu/linux-image-5.4.0-1033-gcp?distro=bionic < 5.4.0-1033.35~18.04.1
pkg:deb/ubuntu/linux-image-5.4.0-1031-kvm?distro=focal < 5.4.0-1031.32
pkg:deb/ubuntu/linux-image-5.4.0-1026-raspi?distro=focal < 5.4.0-1026.29
pkg:deb/ubuntu/linux-image-5.4.0-1026-raspi?distro=bionic < 5.4.0-1026.29~18.04.1
ID
USN-4679-1
Severity
medium
URL
https://ubuntu.com/security/notices/USN-4679-1
Published
2021-01-06T03:24:21
(3 years ago)
Modified
2021-01-06T03:24:21
(3 years ago)
Other Advisories
Type Package URL Namespace Name / Product Version Distribution / Platform Arch Patch / Fix
Affected pkg:deb/ubuntu/linux-image-virtual?distro=focal ubuntu linux-image-virtual < 5.4.0.59.62 focal
Affected pkg:deb/ubuntu/linux-image-virtual-hwe-20.04?distro=focal ubuntu linux-image-virtual-hwe-20.04 < 5.4.0.59.62 focal
Affected pkg:deb/ubuntu/linux-image-virtual-hwe-18.04?distro=focal ubuntu linux-image-virtual-hwe-18.04 < 5.4.0.59.62 focal
Affected pkg:deb/ubuntu/linux-image-virtual-hwe-18.04?distro=bionic ubuntu linux-image-virtual-hwe-18.04 < 5.4.0.59.65~18.04.54 bionic
Affected pkg:deb/ubuntu/linux-image-virtual-hwe-18.04-edge?distro=focal ubuntu linux-image-virtual-hwe-18.04-edge < 5.4.0.59.62 focal
Affected pkg:deb/ubuntu/linux-image-virtual-hwe-18.04-edge?distro=bionic ubuntu linux-image-virtual-hwe-18.04-edge < 5.4.0.59.65~18.04.54 bionic
Affected pkg:deb/ubuntu/linux-image-snapdragon-hwe-18.04?distro=bionic ubuntu linux-image-snapdragon-hwe-18.04 < 5.4.0.59.65~18.04.54 bionic
Affected pkg:deb/ubuntu/linux-image-snapdragon-hwe-18.04-edge?distro=bionic ubuntu linux-image-snapdragon-hwe-18.04-edge < 5.4.0.59.65~18.04.54 bionic
Affected pkg:deb/ubuntu/linux-image-raspi?distro=focal ubuntu linux-image-raspi < 5.4.0.1026.61 focal
Affected pkg:deb/ubuntu/linux-image-raspi2?distro=focal ubuntu linux-image-raspi2 < 5.4.0.1026.61 focal
Affected pkg:deb/ubuntu/linux-image-raspi2-hwe-18.04?distro=focal ubuntu linux-image-raspi2-hwe-18.04 < 5.4.0.1026.61 focal
Affected pkg:deb/ubuntu/linux-image-raspi2-hwe-18.04-edge?distro=focal ubuntu linux-image-raspi2-hwe-18.04-edge < 5.4.0.1026.61 focal
Affected pkg:deb/ubuntu/linux-image-raspi-hwe-18.04?distro=focal ubuntu linux-image-raspi-hwe-18.04 < 5.4.0.1026.61 focal
Affected pkg:deb/ubuntu/linux-image-raspi-hwe-18.04?distro=bionic ubuntu linux-image-raspi-hwe-18.04 < 5.4.0.1026.30 bionic
Affected pkg:deb/ubuntu/linux-image-raspi-hwe-18.04-edge?distro=focal ubuntu linux-image-raspi-hwe-18.04-edge < 5.4.0.1026.61 focal
Affected pkg:deb/ubuntu/linux-image-raspi-hwe-18.04-edge?distro=bionic ubuntu linux-image-raspi-hwe-18.04-edge < 5.4.0.1026.30 bionic
Affected pkg:deb/ubuntu/linux-image-oracle?distro=focal ubuntu linux-image-oracle < 5.4.0.1034.31 focal
Affected pkg:deb/ubuntu/linux-image-oracle?distro=bionic ubuntu linux-image-oracle < 5.4.0.1034.36~18.04.18 bionic
Affected pkg:deb/ubuntu/linux-image-oracle-edge?distro=bionic ubuntu linux-image-oracle-edge < 5.4.0.1034.36~18.04.18 bionic
Affected pkg:deb/ubuntu/linux-image-oem?distro=focal ubuntu linux-image-oem < 5.4.0.59.62 focal
Affected pkg:deb/ubuntu/linux-image-oem?distro=bionic ubuntu linux-image-oem < 5.4.0.59.65~18.04.54 bionic
Affected pkg:deb/ubuntu/linux-image-oem-osp1?distro=focal ubuntu linux-image-oem-osp1 < 5.4.0.59.62 focal
Affected pkg:deb/ubuntu/linux-image-oem-osp1?distro=bionic ubuntu linux-image-oem-osp1 < 5.4.0.59.65~18.04.54 bionic
Affected pkg:deb/ubuntu/linux-image-lowlatency?distro=focal ubuntu linux-image-lowlatency < 5.4.0.59.62 focal
Affected pkg:deb/ubuntu/linux-image-lowlatency-hwe-20.04?distro=focal ubuntu linux-image-lowlatency-hwe-20.04 < 5.4.0.59.62 focal
Affected pkg:deb/ubuntu/linux-image-lowlatency-hwe-18.04?distro=focal ubuntu linux-image-lowlatency-hwe-18.04 < 5.4.0.59.62 focal
Affected pkg:deb/ubuntu/linux-image-lowlatency-hwe-18.04?distro=bionic ubuntu linux-image-lowlatency-hwe-18.04 < 5.4.0.59.65~18.04.54 bionic
Affected pkg:deb/ubuntu/linux-image-lowlatency-hwe-18.04-edge?distro=focal ubuntu linux-image-lowlatency-hwe-18.04-edge < 5.4.0.59.62 focal
Affected pkg:deb/ubuntu/linux-image-lowlatency-hwe-18.04-edge?distro=bionic ubuntu linux-image-lowlatency-hwe-18.04-edge < 5.4.0.59.65~18.04.54 bionic
Affected pkg:deb/ubuntu/linux-image-kvm?distro=focal ubuntu linux-image-kvm < 5.4.0.1031.29 focal
Affected pkg:deb/ubuntu/linux-image-gke-5.4?distro=bionic ubuntu linux-image-gke-5.4 < 5.4.0.1033.35~18.04.2 bionic
Affected pkg:deb/ubuntu/linux-image-generic?distro=focal ubuntu linux-image-generic < 5.4.0.59.62 focal
Affected pkg:deb/ubuntu/linux-image-generic-lpae?distro=focal ubuntu linux-image-generic-lpae < 5.4.0.59.62 focal
Affected pkg:deb/ubuntu/linux-image-generic-lpae-hwe-20.04?distro=focal ubuntu linux-image-generic-lpae-hwe-20.04 < 5.4.0.59.62 focal
Affected pkg:deb/ubuntu/linux-image-generic-lpae-hwe-18.04?distro=focal ubuntu linux-image-generic-lpae-hwe-18.04 < 5.4.0.59.62 focal
Affected pkg:deb/ubuntu/linux-image-generic-lpae-hwe-18.04?distro=bionic ubuntu linux-image-generic-lpae-hwe-18.04 < 5.4.0.59.65~18.04.54 bionic
Affected pkg:deb/ubuntu/linux-image-generic-lpae-hwe-18.04-edge?distro=focal ubuntu linux-image-generic-lpae-hwe-18.04-edge < 5.4.0.59.62 focal
Affected pkg:deb/ubuntu/linux-image-generic-lpae-hwe-18.04-edge?distro=bionic ubuntu linux-image-generic-lpae-hwe-18.04-edge < 5.4.0.59.65~18.04.54 bionic
Affected pkg:deb/ubuntu/linux-image-generic-hwe-20.04?distro=focal ubuntu linux-image-generic-hwe-20.04 < 5.4.0.59.62 focal
Affected pkg:deb/ubuntu/linux-image-generic-hwe-18.04?distro=focal ubuntu linux-image-generic-hwe-18.04 < 5.4.0.59.62 focal
Affected pkg:deb/ubuntu/linux-image-generic-hwe-18.04?distro=bionic ubuntu linux-image-generic-hwe-18.04 < 5.4.0.59.65~18.04.54 bionic
Affected pkg:deb/ubuntu/linux-image-generic-hwe-18.04-edge?distro=focal ubuntu linux-image-generic-hwe-18.04-edge < 5.4.0.59.62 focal
Affected pkg:deb/ubuntu/linux-image-generic-hwe-18.04-edge?distro=bionic ubuntu linux-image-generic-hwe-18.04-edge < 5.4.0.59.65~18.04.54 bionic
Affected pkg:deb/ubuntu/linux-image-gcp?distro=focal ubuntu linux-image-gcp < 5.4.0.1033.42 focal
Affected pkg:deb/ubuntu/linux-image-gcp?distro=bionic ubuntu linux-image-gcp < 5.4.0.1033.21 bionic
Affected pkg:deb/ubuntu/linux-image-gcp-edge?distro=bionic ubuntu linux-image-gcp-edge < 5.4.0.1033.21 bionic
Affected pkg:deb/ubuntu/linux-image-azure?distro=focal ubuntu linux-image-azure < 5.4.0.1035.33 focal
Affected pkg:deb/ubuntu/linux-image-azure?distro=bionic ubuntu linux-image-azure < 5.4.0.1035.17 bionic
Affected pkg:deb/ubuntu/linux-image-azure-edge?distro=bionic ubuntu linux-image-azure-edge < 5.4.0.1035.17 bionic
Affected pkg:deb/ubuntu/linux-image-aws?distro=focal ubuntu linux-image-aws < 5.4.0.1034.35 focal
Affected pkg:deb/ubuntu/linux-image-aws?distro=bionic ubuntu linux-image-aws < 5.4.0.1034.19 bionic
Affected pkg:deb/ubuntu/linux-image-aws-edge?distro=bionic ubuntu linux-image-aws-edge < 5.4.0.1034.19 bionic
Affected pkg:deb/ubuntu/linux-image-5.4.0-59-lowlatency?distro=focal ubuntu linux-image-5.4.0-59-lowlatency < 5.4.0-59.65 focal
Affected pkg:deb/ubuntu/linux-image-5.4.0-59-lowlatency?distro=bionic ubuntu linux-image-5.4.0-59-lowlatency < 5.4.0-59.65~18.04.1 bionic
Affected pkg:deb/ubuntu/linux-image-5.4.0-59-generic?distro=focal ubuntu linux-image-5.4.0-59-generic < 5.4.0-59.65 focal
Affected pkg:deb/ubuntu/linux-image-5.4.0-59-generic?distro=bionic ubuntu linux-image-5.4.0-59-generic < 5.4.0-59.65~18.04.1 bionic
Affected pkg:deb/ubuntu/linux-image-5.4.0-59-generic-lpae?distro=focal ubuntu linux-image-5.4.0-59-generic-lpae < 5.4.0-59.65 focal
Affected pkg:deb/ubuntu/linux-image-5.4.0-59-generic-lpae?distro=bionic ubuntu linux-image-5.4.0-59-generic-lpae < 5.4.0-59.65~18.04.1 bionic
Affected pkg:deb/ubuntu/linux-image-5.4.0-1035-azure?distro=focal ubuntu linux-image-5.4.0-1035-azure < 5.4.0-1035.36 focal
Affected pkg:deb/ubuntu/linux-image-5.4.0-1035-azure?distro=bionic ubuntu linux-image-5.4.0-1035-azure < 5.4.0-1035.36~18.04.1 bionic
Affected pkg:deb/ubuntu/linux-image-5.4.0-1034-oracle?distro=focal ubuntu linux-image-5.4.0-1034-oracle < 5.4.0-1034.36 focal
Affected pkg:deb/ubuntu/linux-image-5.4.0-1034-oracle?distro=bionic ubuntu linux-image-5.4.0-1034-oracle < 5.4.0-1034.36~18.04.1 bionic
Affected pkg:deb/ubuntu/linux-image-5.4.0-1034-aws?distro=focal ubuntu linux-image-5.4.0-1034-aws < 5.4.0-1034.35 focal
Affected pkg:deb/ubuntu/linux-image-5.4.0-1034-aws?distro=bionic ubuntu linux-image-5.4.0-1034-aws < 5.4.0-1034.35~18.04.1 bionic
Affected pkg:deb/ubuntu/linux-image-5.4.0-1033-gke?distro=bionic ubuntu linux-image-5.4.0-1033-gke < 5.4.0-1033.35~18.04.1 bionic
Affected pkg:deb/ubuntu/linux-image-5.4.0-1033-gcp?distro=focal ubuntu linux-image-5.4.0-1033-gcp < 5.4.0-1033.35 focal
Affected pkg:deb/ubuntu/linux-image-5.4.0-1033-gcp?distro=bionic ubuntu linux-image-5.4.0-1033-gcp < 5.4.0-1033.35~18.04.1 bionic
Affected pkg:deb/ubuntu/linux-image-5.4.0-1031-kvm?distro=focal ubuntu linux-image-5.4.0-1031-kvm < 5.4.0-1031.32 focal
Affected pkg:deb/ubuntu/linux-image-5.4.0-1026-raspi?distro=focal ubuntu linux-image-5.4.0-1026-raspi < 5.4.0-1026.29 focal
Affected pkg:deb/ubuntu/linux-image-5.4.0-1026-raspi?distro=bionic ubuntu linux-image-5.4.0-1026-raspi < 5.4.0-1026.29~18.04.1 bionic
# 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