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[USN-2979-2] Linux kernel (Xenial HWE) vulnerabilities

Severity High
Affected Packages 8
CVEs 2
Info Packages Vulnerabilities

Several security issues were fixed in the kernel.

USN-2979-1 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.

David Matlack discovered that the Kernel-based Virtual Machine (KVM)
implementation in the Linux kernel did not properly restrict variable
Memory Type Range Registers (MTRR) in KVM guests. A privileged user in a
guest VM could use this to cause a denial of service (system crash) in the
host, expose sensitive information from the host, or possibly gain
administrative privileges in the host. (CVE-2016-3713)

Philip Pettersson discovered that the Linux kernel's ASN.1 DER decoder did
not properly process certificate files with tags of indefinite length. A
local unprivileged attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code with administrative
privileges. (CVE-2016-0758)

Package Affected Version
pkg:deb/ubuntu/linux-image-extra-4.4.0-22-generic?distro=trusty < 4.4.0-22.40~14.04.1
pkg:deb/ubuntu/linux-image-4.4.0-22-powerpc64-smp?distro=trusty < 4.4.0-22.40~14.04.1
pkg:deb/ubuntu/linux-image-4.4.0-22-powerpc64-emb?distro=trusty < 4.4.0-22.40~14.04.1
pkg:deb/ubuntu/linux-image-4.4.0-22-powerpc-smp?distro=trusty < 4.4.0-22.40~14.04.1
pkg:deb/ubuntu/linux-image-4.4.0-22-powerpc-e500mc?distro=trusty < 4.4.0-22.40~14.04.1
pkg:deb/ubuntu/linux-image-4.4.0-22-lowlatency?distro=trusty < 4.4.0-22.40~14.04.1
pkg:deb/ubuntu/linux-image-4.4.0-22-generic?distro=trusty < 4.4.0-22.40~14.04.1
pkg:deb/ubuntu/linux-image-4.4.0-22-generic-lpae?distro=trusty < 4.4.0-22.40~14.04.1
ID
USN-2979-2
Severity
high
URL
https://ubuntu.com/security/notices/USN-2979-2
Published
2016-05-16T18:54:35
(8 years ago)
Modified
2016-05-16T18:54:35
(8 years ago)
Other Advisories
Type Package URL Namespace Name / Product Version Distribution / Platform Arch Patch / Fix
Affected pkg:deb/ubuntu/linux-image-extra-4.4.0-22-generic?distro=trusty ubuntu linux-image-extra-4.4.0-22-generic < 4.4.0-22.40~14.04.1 trusty
Affected pkg:deb/ubuntu/linux-image-4.4.0-22-powerpc64-smp?distro=trusty ubuntu linux-image-4.4.0-22-powerpc64-smp < 4.4.0-22.40~14.04.1 trusty
Affected pkg:deb/ubuntu/linux-image-4.4.0-22-powerpc64-emb?distro=trusty ubuntu linux-image-4.4.0-22-powerpc64-emb < 4.4.0-22.40~14.04.1 trusty
Affected pkg:deb/ubuntu/linux-image-4.4.0-22-powerpc-smp?distro=trusty ubuntu linux-image-4.4.0-22-powerpc-smp < 4.4.0-22.40~14.04.1 trusty
Affected pkg:deb/ubuntu/linux-image-4.4.0-22-powerpc-e500mc?distro=trusty ubuntu linux-image-4.4.0-22-powerpc-e500mc < 4.4.0-22.40~14.04.1 trusty
Affected pkg:deb/ubuntu/linux-image-4.4.0-22-lowlatency?distro=trusty ubuntu linux-image-4.4.0-22-lowlatency < 4.4.0-22.40~14.04.1 trusty
Affected pkg:deb/ubuntu/linux-image-4.4.0-22-generic?distro=trusty ubuntu linux-image-4.4.0-22-generic < 4.4.0-22.40~14.04.1 trusty
Affected pkg:deb/ubuntu/linux-image-4.4.0-22-generic-lpae?distro=trusty ubuntu linux-image-4.4.0-22-generic-lpae < 4.4.0-22.40~14.04.1 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