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[USN-4318-1] Linux kernel vulnerabilities

Severity Medium
Affected Packages 27
CVEs 3
Info Packages Vulnerabilities

Several security issues were fixed in the Linux kernel.

Al Viro discovered that the vfs layer in the Linux kernel contained a use-
after-free vulnerability. A local attacker could use this to cause a denial
of service (system crash) or possibly expose sensitive information (kernel
memory). (CVE-2020-8428)

Gustavo Romero and Paul Mackerras discovered that the KVM implementation in
the Linux kernel for PowerPC processors did not properly keep guest state
separate from host state. A local attacker in a KVM guest could use this to
cause a denial of service (host system crash). (CVE-2020-8834)

Shijie Luo discovered that the ext4 file system implementation in the Linux
kernel did not properly check for a too-large journal size. An attacker
could use this to construct a malicious ext4 image that, when mounted,
could cause a denial of service (soft lockup). (CVE-2020-8992)

Package Affected Version
pkg:deb/ubuntu/linux-image-virtual?distro=bionic < 4.15.0.96.87
pkg:deb/ubuntu/linux-image-virtual-hwe-16.04?distro=xenial < 4.15.0.96.104
pkg:deb/ubuntu/linux-image-virtual-hwe-16.04?distro=bionic < 4.15.0.96.87
pkg:deb/ubuntu/linux-image-virtual-hwe-16.04-edge?distro=xenial < 4.15.0.96.104
pkg:deb/ubuntu/linux-image-virtual-hwe-16.04-edge?distro=bionic < 4.15.0.96.87
pkg:deb/ubuntu/linux-image-oem?distro=xenial < 4.15.0.96.104
pkg:deb/ubuntu/linux-image-lowlatency?distro=bionic < 4.15.0.96.87
pkg:deb/ubuntu/linux-image-lowlatency-hwe-16.04?distro=xenial < 4.15.0.96.104
pkg:deb/ubuntu/linux-image-lowlatency-hwe-16.04?distro=bionic < 4.15.0.96.87
pkg:deb/ubuntu/linux-image-lowlatency-hwe-16.04-edge?distro=xenial < 4.15.0.96.104
pkg:deb/ubuntu/linux-image-lowlatency-hwe-16.04-edge?distro=bionic < 4.15.0.96.87
pkg:deb/ubuntu/linux-image-generic?distro=bionic < 4.15.0.96.87
pkg:deb/ubuntu/linux-image-generic-lpae?distro=bionic < 4.15.0.96.87
pkg:deb/ubuntu/linux-image-generic-lpae-hwe-16.04?distro=xenial < 4.15.0.96.104
pkg:deb/ubuntu/linux-image-generic-lpae-hwe-16.04?distro=bionic < 4.15.0.96.87
pkg:deb/ubuntu/linux-image-generic-lpae-hwe-16.04-edge?distro=xenial < 4.15.0.96.104
pkg:deb/ubuntu/linux-image-generic-lpae-hwe-16.04-edge?distro=bionic < 4.15.0.96.87
pkg:deb/ubuntu/linux-image-generic-hwe-16.04?distro=xenial < 4.15.0.96.104
pkg:deb/ubuntu/linux-image-generic-hwe-16.04?distro=bionic < 4.15.0.96.87
pkg:deb/ubuntu/linux-image-generic-hwe-16.04-edge?distro=xenial < 4.15.0.96.104
pkg:deb/ubuntu/linux-image-generic-hwe-16.04-edge?distro=bionic < 4.15.0.96.87
pkg:deb/ubuntu/linux-image-4.15.0-96-lowlatency?distro=xenial < 4.15.0-96.97~16.04.1
pkg:deb/ubuntu/linux-image-4.15.0-96-lowlatency?distro=bionic < 4.15.0-96.97
pkg:deb/ubuntu/linux-image-4.15.0-96-generic?distro=xenial < 4.15.0-96.97~16.04.1
pkg:deb/ubuntu/linux-image-4.15.0-96-generic?distro=bionic < 4.15.0-96.97
pkg:deb/ubuntu/linux-image-4.15.0-96-generic-lpae?distro=xenial < 4.15.0-96.97~16.04.1
pkg:deb/ubuntu/linux-image-4.15.0-96-generic-lpae?distro=bionic < 4.15.0-96.97
ID
USN-4318-1
Severity
medium
URL
https://ubuntu.com/security/notices/USN-4318-1
Published
2020-04-06T20:29:11
(4 years ago)
Modified
2020-04-06T20:29:11
(4 years ago)
Other Advisories
Type Package URL Namespace Name / Product Version Distribution / Platform Arch Patch / Fix
Affected pkg:deb/ubuntu/linux-image-virtual?distro=bionic ubuntu linux-image-virtual < 4.15.0.96.87 bionic
Affected pkg:deb/ubuntu/linux-image-virtual-hwe-16.04?distro=xenial ubuntu linux-image-virtual-hwe-16.04 < 4.15.0.96.104 xenial
Affected pkg:deb/ubuntu/linux-image-virtual-hwe-16.04?distro=bionic ubuntu linux-image-virtual-hwe-16.04 < 4.15.0.96.87 bionic
Affected pkg:deb/ubuntu/linux-image-virtual-hwe-16.04-edge?distro=xenial ubuntu linux-image-virtual-hwe-16.04-edge < 4.15.0.96.104 xenial
Affected pkg:deb/ubuntu/linux-image-virtual-hwe-16.04-edge?distro=bionic ubuntu linux-image-virtual-hwe-16.04-edge < 4.15.0.96.87 bionic
Affected pkg:deb/ubuntu/linux-image-oem?distro=xenial ubuntu linux-image-oem < 4.15.0.96.104 xenial
Affected pkg:deb/ubuntu/linux-image-lowlatency?distro=bionic ubuntu linux-image-lowlatency < 4.15.0.96.87 bionic
Affected pkg:deb/ubuntu/linux-image-lowlatency-hwe-16.04?distro=xenial ubuntu linux-image-lowlatency-hwe-16.04 < 4.15.0.96.104 xenial
Affected pkg:deb/ubuntu/linux-image-lowlatency-hwe-16.04?distro=bionic ubuntu linux-image-lowlatency-hwe-16.04 < 4.15.0.96.87 bionic
Affected pkg:deb/ubuntu/linux-image-lowlatency-hwe-16.04-edge?distro=xenial ubuntu linux-image-lowlatency-hwe-16.04-edge < 4.15.0.96.104 xenial
Affected pkg:deb/ubuntu/linux-image-lowlatency-hwe-16.04-edge?distro=bionic ubuntu linux-image-lowlatency-hwe-16.04-edge < 4.15.0.96.87 bionic
Affected pkg:deb/ubuntu/linux-image-generic?distro=bionic ubuntu linux-image-generic < 4.15.0.96.87 bionic
Affected pkg:deb/ubuntu/linux-image-generic-lpae?distro=bionic ubuntu linux-image-generic-lpae < 4.15.0.96.87 bionic
Affected pkg:deb/ubuntu/linux-image-generic-lpae-hwe-16.04?distro=xenial ubuntu linux-image-generic-lpae-hwe-16.04 < 4.15.0.96.104 xenial
Affected pkg:deb/ubuntu/linux-image-generic-lpae-hwe-16.04?distro=bionic ubuntu linux-image-generic-lpae-hwe-16.04 < 4.15.0.96.87 bionic
Affected pkg:deb/ubuntu/linux-image-generic-lpae-hwe-16.04-edge?distro=xenial ubuntu linux-image-generic-lpae-hwe-16.04-edge < 4.15.0.96.104 xenial
Affected pkg:deb/ubuntu/linux-image-generic-lpae-hwe-16.04-edge?distro=bionic ubuntu linux-image-generic-lpae-hwe-16.04-edge < 4.15.0.96.87 bionic
Affected pkg:deb/ubuntu/linux-image-generic-hwe-16.04?distro=xenial ubuntu linux-image-generic-hwe-16.04 < 4.15.0.96.104 xenial
Affected pkg:deb/ubuntu/linux-image-generic-hwe-16.04?distro=bionic ubuntu linux-image-generic-hwe-16.04 < 4.15.0.96.87 bionic
Affected pkg:deb/ubuntu/linux-image-generic-hwe-16.04-edge?distro=xenial ubuntu linux-image-generic-hwe-16.04-edge < 4.15.0.96.104 xenial
Affected pkg:deb/ubuntu/linux-image-generic-hwe-16.04-edge?distro=bionic ubuntu linux-image-generic-hwe-16.04-edge < 4.15.0.96.87 bionic
Affected pkg:deb/ubuntu/linux-image-4.15.0-96-lowlatency?distro=xenial ubuntu linux-image-4.15.0-96-lowlatency < 4.15.0-96.97~16.04.1 xenial
Affected pkg:deb/ubuntu/linux-image-4.15.0-96-lowlatency?distro=bionic ubuntu linux-image-4.15.0-96-lowlatency < 4.15.0-96.97 bionic
Affected pkg:deb/ubuntu/linux-image-4.15.0-96-generic?distro=xenial ubuntu linux-image-4.15.0-96-generic < 4.15.0-96.97~16.04.1 xenial
Affected pkg:deb/ubuntu/linux-image-4.15.0-96-generic?distro=bionic ubuntu linux-image-4.15.0-96-generic < 4.15.0-96.97 bionic
Affected pkg:deb/ubuntu/linux-image-4.15.0-96-generic-lpae?distro=xenial ubuntu linux-image-4.15.0-96-generic-lpae < 4.15.0-96.97~16.04.1 xenial
Affected pkg:deb/ubuntu/linux-image-4.15.0-96-generic-lpae?distro=bionic ubuntu linux-image-4.15.0-96-generic-lpae < 4.15.0-96.97 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