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[USN-3741-2] Linux kernel (Xenial HWE) vulnerabilities

Severity High
Affected Packages 9
CVEs 4
Info Packages Vulnerabilities

Several security issues were fixed in the Linux kernel.

USN-3741-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04
LTS. This update provides the corresponding updates for the Linux
Hardware Enablement (HWE) kernel from Ubuntu 16.04 LTS for Ubuntu
14.04 LTS.

It was discovered that memory present in the L1 data cache of an Intel CPU
core may be exposed to a malicious process that is executing on the CPU
core. This vulnerability is also known as L1 Terminal Fault (L1TF). A local
attacker in a guest virtual machine could use this to expose sensitive
information (memory from other guests or the host OS). (CVE-2018-3646)

It was discovered that memory present in the L1 data cache of an Intel CPU
core may be exposed to a malicious process that is executing on the CPU
core. This vulnerability is also known as L1 Terminal Fault (L1TF). A local
attacker could use this to expose sensitive information (memory from the
kernel or other processes). (CVE-2018-3620)

Juha-Matti Tilli discovered that the TCP implementation in the Linux kernel
performed algorithmically expensive operations in some situations when
handling incoming packets. A remote attacker could use this to cause a
denial of service. (CVE-2018-5390)

Juha-Matti Tilli discovered that the IP implementation in the Linux kernel
performed algorithmically expensive operations in some situations when
handling incoming packet fragments. A remote attacker could use this to
cause a denial of service. (CVE-2018-5391)

Package Affected Version
pkg:deb/ubuntu/linux-image-extra-4.4.0-133-generic?distro=trusty < 4.4.0-133.159~14.04.1
pkg:deb/ubuntu/linux-image-4.4.0-133-powerpc64-smp?distro=trusty < 4.4.0-133.159~14.04.1
pkg:deb/ubuntu/linux-image-4.4.0-133-powerpc64-emb?distro=trusty < 4.4.0-133.159~14.04.1
pkg:deb/ubuntu/linux-image-4.4.0-133-powerpc-smp?distro=trusty < 4.4.0-133.159~14.04.1
pkg:deb/ubuntu/linux-image-4.4.0-133-powerpc-e500mc?distro=trusty < 4.4.0-133.159~14.04.1
pkg:deb/ubuntu/linux-image-4.4.0-133-lowlatency?distro=trusty < 4.4.0-133.159~14.04.1
pkg:deb/ubuntu/linux-image-4.4.0-133-generic?distro=trusty < 4.4.0-133.159~14.04.1
pkg:deb/ubuntu/linux-image-4.4.0-133-generic-lpae?distro=trusty < 4.4.0-133.159~14.04.1
pkg:deb/ubuntu/linux-image-4.4.0-1027-aws?distro=trusty < 4.4.0-1027.30
ID
USN-3741-2
Severity
high
URL
https://ubuntu.com/security/notices/USN-3741-2
Published
2018-08-14T22:09:02
(6 years ago)
Modified
2018-08-14T22:09:02
(6 years ago)
Other Advisories
Type Package URL Namespace Name / Product Version Distribution / Platform Arch Patch / Fix
Affected pkg:deb/ubuntu/linux-image-extra-4.4.0-133-generic?distro=trusty ubuntu linux-image-extra-4.4.0-133-generic < 4.4.0-133.159~14.04.1 trusty
Affected pkg:deb/ubuntu/linux-image-4.4.0-133-powerpc64-smp?distro=trusty ubuntu linux-image-4.4.0-133-powerpc64-smp < 4.4.0-133.159~14.04.1 trusty
Affected pkg:deb/ubuntu/linux-image-4.4.0-133-powerpc64-emb?distro=trusty ubuntu linux-image-4.4.0-133-powerpc64-emb < 4.4.0-133.159~14.04.1 trusty
Affected pkg:deb/ubuntu/linux-image-4.4.0-133-powerpc-smp?distro=trusty ubuntu linux-image-4.4.0-133-powerpc-smp < 4.4.0-133.159~14.04.1 trusty
Affected pkg:deb/ubuntu/linux-image-4.4.0-133-powerpc-e500mc?distro=trusty ubuntu linux-image-4.4.0-133-powerpc-e500mc < 4.4.0-133.159~14.04.1 trusty
Affected pkg:deb/ubuntu/linux-image-4.4.0-133-lowlatency?distro=trusty ubuntu linux-image-4.4.0-133-lowlatency < 4.4.0-133.159~14.04.1 trusty
Affected pkg:deb/ubuntu/linux-image-4.4.0-133-generic?distro=trusty ubuntu linux-image-4.4.0-133-generic < 4.4.0-133.159~14.04.1 trusty
Affected pkg:deb/ubuntu/linux-image-4.4.0-133-generic-lpae?distro=trusty ubuntu linux-image-4.4.0-133-generic-lpae < 4.4.0-133.159~14.04.1 trusty
Affected pkg:deb/ubuntu/linux-image-4.4.0-1027-aws?distro=trusty ubuntu linux-image-4.4.0-1027-aws < 4.4.0-1027.30 trusty
# 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