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Test ID:1.3.6.1.4.1.25623.1.0.844496
Category:Ubuntu Local Security Checks
Title:Ubuntu: Security Advisory for linux (USN-4419-1)
Summary:The remote host is missing an update for the 'linux'; package(s) announced via the USN-4419-1 advisory.
Description:Summary:
The remote host is missing an update for the 'linux'
package(s) announced via the USN-4419-1 advisory.

Vulnerability Insight:
It was discovered that a race condition existed in the Precision Time
Protocol (PTP) implementation in the Linux kernel, leading to a use-after-
free vulnerability. A local attacker could possibly use this to cause a
denial of service (system crash) or possibly execute arbitrary code.
(CVE-2020-10690)

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)

Shijie Luo discovered that the ext4 file system implementation in the Linux
kernel did not properly check for a too-large journal size. An attacker
could use this to construct a malicious ext4 image that, when mounted,
could cause a denial of service (soft lockup). (CVE-2020-8992)

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

Solution:
Please install the updated package(s).

CVSS Score:
4.9

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

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2020-8992
https://patchwork.ozlabs.org/patch/1236118/
SuSE Security Announcement: openSUSE-SU-2020:0336 (Google Search)
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html
https://usn.ubuntu.com/4318-1/
https://usn.ubuntu.com/4324-1/
https://usn.ubuntu.com/4342-1/
https://usn.ubuntu.com/4344-1/
https://usn.ubuntu.com/4419-1/
CopyrightCopyright (C) 2020 Greenbone Networks GmbH

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