[USN-3677-2] Linux kernel (HWE) vulnerabilities

Severity Medium

Affected Packages 7

CVEs 5

Several security issues were fixed in the Linux kernel.

USN-3677-1 fixed vulnerabilities in the Linux kernel for Ubuntu 17.10.
This update provides the corresponding updates for the Linux Hardware
Enablement (HWE) kernel from Ubuntu 17.10 for Ubuntu 16.04 LTS.

It was discovered that the netfilter subsystem of the Linux kernel did not
properly validate ebtables offsets. A local attacker could use this to
cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2018-1068)

Wen Xu discovered that the ext4 filesystem implementation in the Linux
kernel did not properly handle corrupted meta data in some situations. An
attacker could use this to specially craft an ext4 file system that caused
a denial of service (system crash) when mounted. (CVE-2018-1092)

It was discovered that a NULL pointer dereference existed in the RDS
(Reliable Datagram Sockets) protocol implementation in the Linux kernel. A
local attacker could use this to cause a denial of service (system crash).
(CVE-2018-7492)

It was discovered that the 802.11 software simulator implementation in the
Linux kernel contained a memory leak when handling certain error
conditions. A local attacker could possibly use this to cause a denial of
service (memory exhaustion). (CVE-2018-8087)

Eyal Itkin discovered that the USB displaylink video adapter driver in the
Linux kernel did not properly validate mmap offsets sent from userspace. A
local attacker could use this to expose sensitive information (kernel
memory) or possibly execute arbitrary code. (CVE-2018-8781)

Package	Affected Version
pkg:deb/ubuntu/linux-image-extra-4.13.0-45-generic?distro=xenial	< 4.13.0-45.50~16.04.1
pkg:deb/ubuntu/linux-image-extra-4.13.0-1019-gcp?distro=xenial	< 4.13.0-1019.23
pkg:deb/ubuntu/linux-image-4.13.0-45-lowlatency?distro=xenial	< 4.13.0-45.50~16.04.1
pkg:deb/ubuntu/linux-image-4.13.0-45-generic?distro=xenial	< 4.13.0-45.50~16.04.1
pkg:deb/ubuntu/linux-image-4.13.0-45-generic-lpae?distro=xenial	< 4.13.0-45.50~16.04.1
pkg:deb/ubuntu/linux-image-4.13.0-1030-oem?distro=xenial	< 4.13.0-1030.33
pkg:deb/ubuntu/linux-image-4.13.0-1019-gcp?distro=xenial	< 4.13.0-1019.23

ID

USN-3677-2

Severity

medium

URL

https://ubuntu.com/security/notices/USN-3677-2

Published

2018-06-12T00:18:07
(6 years ago)

Modified

2018-06-12T00:18:07
(6 years ago)

Other Advisories

Type	Package URL	Namespace	Name / Product	Version	Distribution / Platform
Affected	pkg:deb/ubuntu/linux-image-extra-4.13.0-45-generic?distro=xenial	ubuntu	linux-image-extra-4.13.0-45-generic	< 4.13.0-45.50~16.04.1	xenial
Affected	pkg:deb/ubuntu/linux-image-extra-4.13.0-1019-gcp?distro=xenial	ubuntu	linux-image-extra-4.13.0-1019-gcp	< 4.13.0-1019.23	xenial
Affected	pkg:deb/ubuntu/linux-image-4.13.0-45-lowlatency?distro=xenial	ubuntu	linux-image-4.13.0-45-lowlatency	< 4.13.0-45.50~16.04.1	xenial
Affected	pkg:deb/ubuntu/linux-image-4.13.0-45-generic?distro=xenial	ubuntu	linux-image-4.13.0-45-generic	< 4.13.0-45.50~16.04.1	xenial
Affected	pkg:deb/ubuntu/linux-image-4.13.0-45-generic-lpae?distro=xenial	ubuntu	linux-image-4.13.0-45-generic-lpae	< 4.13.0-45.50~16.04.1	xenial
Affected	pkg:deb/ubuntu/linux-image-4.13.0-1030-oem?distro=xenial	ubuntu	linux-image-4.13.0-1030-oem	< 4.13.0-1030.33	xenial
Affected	pkg:deb/ubuntu/linux-image-4.13.0-1019-gcp?distro=xenial	ubuntu	linux-image-4.13.0-1019-gcp	< 4.13.0-1019.23	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