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[USN-4255-2] Linux kernel (HWE) vulnerabilities

Severity Medium
Affected Packages 14
CVEs 2
Info Packages Vulnerabilities

Several security issues were fixed in the Linux kernel.

USN-4255-1 fixed vulnerabilities in the Linux kernel for Ubuntu 18.04
LTS. This update provides the corresponding updates for the Linux
Hardware Enablement (HWE) kernel from Ubuntu 18.04 LTS for Ubuntu
16.04 LTS.

It was discovered that the Linux kernel did not properly clear data
structures on context switches for certain Intel graphics processors. A
local attacker could use this to expose sensitive information.
(CVE-2019-14615)

It was discovered that a race condition can lead to a use-after-free while
destroying GEM contexts in the i915 driver for the Linux kernel. A local
attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2020-7053)

Package Affected Version
pkg:deb/ubuntu/linux-image-virtual-hwe-16.04?distro=xenial < 4.15.0.76.96
pkg:deb/ubuntu/linux-image-virtual-hwe-16.04-edge?distro=xenial < 4.15.0.76.96
pkg:deb/ubuntu/linux-image-oem?distro=xenial < 4.15.0.76.96
pkg:deb/ubuntu/linux-image-lowlatency-hwe-16.04?distro=xenial < 4.15.0.76.96
pkg:deb/ubuntu/linux-image-lowlatency-hwe-16.04-edge?distro=xenial < 4.15.0.76.96
pkg:deb/ubuntu/linux-image-generic-lpae-hwe-16.04?distro=xenial < 4.15.0.76.96
pkg:deb/ubuntu/linux-image-generic-lpae-hwe-16.04-edge?distro=xenial < 4.15.0.76.96
pkg:deb/ubuntu/linux-image-generic-hwe-16.04?distro=xenial < 4.15.0.76.96
pkg:deb/ubuntu/linux-image-generic-hwe-16.04-edge?distro=xenial < 4.15.0.76.96
pkg:deb/ubuntu/linux-image-aws-hwe?distro=xenial < 4.15.0.1058.58
pkg:deb/ubuntu/linux-image-4.15.0-76-lowlatency?distro=xenial < 4.15.0-76.86~16.04.1
pkg:deb/ubuntu/linux-image-4.15.0-76-generic?distro=xenial < 4.15.0-76.86~16.04.1
pkg:deb/ubuntu/linux-image-4.15.0-76-generic-lpae?distro=xenial < 4.15.0-76.86~16.04.1
pkg:deb/ubuntu/linux-image-4.15.0-1058-aws?distro=xenial < 4.15.0-1058.60~16.04.1
ID
USN-4255-2
Severity
medium
URL
https://ubuntu.com/security/notices/USN-4255-2
Published
2020-01-28T23:07:46
(4 years ago)
Modified
2020-01-28T23:07:46
(4 years ago)
Other Advisories
Type Package URL Namespace Name / Product Version Distribution / Platform Arch Patch / Fix
Affected pkg:deb/ubuntu/linux-image-virtual-hwe-16.04?distro=xenial ubuntu linux-image-virtual-hwe-16.04 < 4.15.0.76.96 xenial
Affected pkg:deb/ubuntu/linux-image-virtual-hwe-16.04-edge?distro=xenial ubuntu linux-image-virtual-hwe-16.04-edge < 4.15.0.76.96 xenial
Affected pkg:deb/ubuntu/linux-image-oem?distro=xenial ubuntu linux-image-oem < 4.15.0.76.96 xenial
Affected pkg:deb/ubuntu/linux-image-lowlatency-hwe-16.04?distro=xenial ubuntu linux-image-lowlatency-hwe-16.04 < 4.15.0.76.96 xenial
Affected pkg:deb/ubuntu/linux-image-lowlatency-hwe-16.04-edge?distro=xenial ubuntu linux-image-lowlatency-hwe-16.04-edge < 4.15.0.76.96 xenial
Affected pkg:deb/ubuntu/linux-image-generic-lpae-hwe-16.04?distro=xenial ubuntu linux-image-generic-lpae-hwe-16.04 < 4.15.0.76.96 xenial
Affected pkg:deb/ubuntu/linux-image-generic-lpae-hwe-16.04-edge?distro=xenial ubuntu linux-image-generic-lpae-hwe-16.04-edge < 4.15.0.76.96 xenial
Affected pkg:deb/ubuntu/linux-image-generic-hwe-16.04?distro=xenial ubuntu linux-image-generic-hwe-16.04 < 4.15.0.76.96 xenial
Affected pkg:deb/ubuntu/linux-image-generic-hwe-16.04-edge?distro=xenial ubuntu linux-image-generic-hwe-16.04-edge < 4.15.0.76.96 xenial
Affected pkg:deb/ubuntu/linux-image-aws-hwe?distro=xenial ubuntu linux-image-aws-hwe < 4.15.0.1058.58 xenial
Affected pkg:deb/ubuntu/linux-image-4.15.0-76-lowlatency?distro=xenial ubuntu linux-image-4.15.0-76-lowlatency < 4.15.0-76.86~16.04.1 xenial
Affected pkg:deb/ubuntu/linux-image-4.15.0-76-generic?distro=xenial ubuntu linux-image-4.15.0-76-generic < 4.15.0-76.86~16.04.1 xenial
Affected pkg:deb/ubuntu/linux-image-4.15.0-76-generic-lpae?distro=xenial ubuntu linux-image-4.15.0-76-generic-lpae < 4.15.0-76.86~16.04.1 xenial
Affected pkg:deb/ubuntu/linux-image-4.15.0-1058-aws?distro=xenial ubuntu linux-image-4.15.0-1058-aws < 4.15.0-1058.60~16.04.1 xenial
# 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