PT-2019-5266 · Linux+2 · Linux Kernel+2

Published 2019-10-25 · Updated 2021-05-28 · CVE-2019-19043

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 5.3.11

Description The issue is related to the i40e setup macvlans function in the Linux kernel, which is associated with an uncontrolled resource consumption, also known as a resource exhaustion issue. This can be exploited by an attacker to cause a denial of service. The exploitation is possible by triggering i40e setup channel failures, which leads to memory consumption.

Recommendations For Linux kernel versions prior to 5.3.11, update to version 5.3.11 or later to resolve the issue. As a temporary workaround, consider restricting access to the i40e setup macvlans function to minimize the risk of exploitation.

Fix

DoS

Memory Leak

Resource Exhaustion

Weakness Enumeration

CWE-401

CWE-400

Related Identifiers

ALT-PU-2019-3180

ALT-PU-2019-3184

ALT-PU-2019-3268

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:2020-02159

CVE-2019-19043

USN-4300-1

Affected Products

Alt Linux

Linux Kernel

Ubuntu

References · 33

• https://github.com/torvalds/linux/commit/27d461333459d282ffa4a2bdb6b215a59d493a8f · Patch
• https://wiki.astralinux.ru/astra-linux-se81-bulletin-20241206SE81 · Vendor Advisory
• https://usn.ubuntu.com/4300-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-19056 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-18809 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-4300-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2019-19043 · Security Note
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/O3PSDE6PTOTVBK2YTKB2TFQP2SUBVSNF · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-2732 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-19068 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PY7LJMSPAGRIKABJPDKQDTXYW3L5RX2T · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-19043 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2019-19043 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-19058 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-3016 · Vendor Advisory