PT-2019-4497 · Linux+2 · Linux Kernel+2

Published 2019-12-08 · Updated 2022-11-09 · CVE-2019-19947

Positive Technologies (AI Summary)

CVSS v2.0

4.9

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 5.4.6

Description The issue is related to information leaks of uninitialized memory to a USB device in the drivers/net/can/usb/kvaser usb/kvaser usb leaf.c driver. This could allow an attacker to gain unauthorized access to protected information.

Recommendations For Linux kernel versions prior to 5.4.6, update to version 5.4.6 or later to resolve the issue. As a temporary workaround, consider restricting access to the vulnerable driver until a patch is available.

Fix

Information Disclosure

Use of Uninitialized Resource

Weakness Enumeration

CWE-200

CWE-908

Related Identifiers

ALT-PU-2020-1003

ALT-PU-2020-1010

ALT-PU-2020-1043

ALT-PU-2020-1198

ALT-PU-2020-1421

ALT-PU-2020-1450

ALT-PU-2020-1501

ALT-PU-2020-1714

ALT-PU-2020-2410

ALT-PU-2020-2433

ALT-PU-2021-1870

BDU:2020-00356

CVE-2019-19947

DLA-2068-1

DLA-2114-1

USN-4284-1

USN-4285-1

USN-4427-1

USN-4485-1

Affected Products

Alt Linux

Linux Kernel

Ubuntu

References · 84

• https://github.com/torvalds/linux/commit/da2311a6385c3b499da2ed5d9be59ce331fa93e9 · Patch
• https://ubuntu.com/security/CVE-2020-10768 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2019-19947 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-15393 · Vendor Advisory
• https://usn.ubuntu.com/4427-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-19057 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-20096 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-12380 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-7053 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-10767 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-19332 · Vendor Advisory
• https://usn.ubuntu.com/4285-1 · Vendor Advisory
• https://usn.ubuntu.com/4485-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-20810 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-12771 · Vendor Advisory