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Test ID:1.3.6.1.4.1.25623.1.0.844482
Category:Ubuntu Local Security Checks
Title:Ubuntu: Security Advisory for linux (USN-4414-1)
Summary:The remote host is missing an update for the 'linux'; package(s) announced via the USN-4414-1 advisory.
Description:Summary:
The remote host is missing an update for the 'linux'
package(s) announced via the USN-4414-1 advisory.

Vulnerability Insight:
It was discovered that the network block device (nbd) implementation in the
Linux kernel did not properly check for error conditions in some
situations. An attacker could possibly use this to cause a denial of service
(system crash). (CVE-2019-16089)

It was discovered that the btrfs file system implementation in the Linux
kernel did not properly validate file system metadata in some situations.
An attacker could use this to construct a malicious btrfs image that, when
mounted, could cause a denial of service (system crash). (CVE-2019-19036,
CVE-2019-19318, CVE-2019-19813, CVE-2019-19816)

It was discovered that the btrfs implementation in the Linux kernel did not
properly detect that a block was marked dirty in some situations. An
attacker could use this to specially craft a file system image that, when
unmounted, could cause a denial of service (system crash). (CVE-2019-19377)

It was discovered that the kernel->user space relay implementation in the
Linux kernel did not properly check return values in some situations. A
local attacker could possibly use this to cause a denial of service (system
crash). (CVE-2019-19462)

Matthew Sheets discovered that the SELinux network label handling
implementation in the Linux kernel could be coerced into de-referencing a
NULL pointer. A remote attacker could use this to cause a denial of service
(system crash). (CVE-2020-10711)

It was discovered that the SCSI generic (sg) driver in the Linux kernel did
not properly handle certain error conditions correctly. A local privileged
attacker could use this to cause a denial of service (system crash).
(CVE-2020-12770)

It was discovered that the USB Gadget device driver in the Linux kernel did
not validate arguments passed from configfs in some situations. A local
attacker could possibly use this to cause a denial of service (system
crash) or possibly expose sensitive information. (CVE-2020-13143)

It was discovered that the efi subsystem in the Linux kernel did not handle
memory allocation failures during early boot in some situations. A local
attacker could possibly use this to cause a denial of service (system
crash). (CVE-2019-12380)

It was discovered that the btrfs file system in the Linux kernel in some
error conditions could report register information to the dmesg buffer. A
local attacker could possibly use this to expose sensitive information.
(CVE-2019-19039)

Affected Software/OS:
'linux' package(s) on Ubuntu 18.04 LTS, Ubuntu 16.04 LTS.

Solution:
Please install the updated package(s).

CVSS Score:
9.3

CVSS Vector:
AV:N/AC:M/Au:N/C:C/I:C/A:C

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2019-16089
Common Vulnerability Exposure (CVE) ID: CVE-2019-19036
Common Vulnerability Exposure (CVE) ID: CVE-2019-19318
Common Vulnerability Exposure (CVE) ID: CVE-2019-19813
Common Vulnerability Exposure (CVE) ID: CVE-2019-19816
Common Vulnerability Exposure (CVE) ID: CVE-2019-19377
Common Vulnerability Exposure (CVE) ID: CVE-2019-19462
Common Vulnerability Exposure (CVE) ID: CVE-2020-10711
Common Vulnerability Exposure (CVE) ID: CVE-2020-12770
Common Vulnerability Exposure (CVE) ID: CVE-2020-13143
Common Vulnerability Exposure (CVE) ID: CVE-2019-12380
Common Vulnerability Exposure (CVE) ID: CVE-2019-19039
CopyrightCopyright (C) 2020 Greenbone Networks GmbH

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