PT-2019-4214 · Linux+4 · Linux Kernel+4

Published 2019-10-09 · Updated 2021-05-28 · CVE-2019-19059

Positive Technologies (AI Summary)

CVSS v3.1

4.7

Medium

Base vector

AV:L/AC:H/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 iwl pcie ctxt info gen3 init() function in the Linux kernel, which is associated with uncontrolled resource consumption. This can be exploited by a remote attacker to cause a denial of service, specifically through memory consumption, by triggering failures in iwl pcie init fw sec() or dma alloc coherent().

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 iwl pcie ctxt info gen3 init() 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:2019-04811

CESA-2020_1567

CESA-2020_1769

CESA-2020_4060

CVE-2019-19059

RHSA-2020:1567

RHSA-2020:1769

RHSA-2020:4060

RHSA-2020:4062

RHSA-2020_1567

RHSA-2020_1769

RHSA-2020_4060

RHSA-2020_4062

USN-4300-1

USN-4301-1

Affected Products

Alt Linux

Centos

Linux Kernel

Red Hat

Ubuntu

References · 36

• https://github.com/torvalds/linux/commit/0f4f199443faca715523b0659aa536251d8b978f · Patch
• https://usn.ubuntu.com/4300-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-2732 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PY7LJMSPAGRIKABJPDKQDTXYW3L5RX2T · Vendor Advisory
• https://bdu.fstec.ru/vul/2019-04811 · Security Note
• https://ubuntu.com/security/CVE-2019-19068 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-19059 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2019-19059 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2019-19059 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2019-19059 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-19043 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/[e-mail]/message/O3PSDE6PTOTVBK2YTKB2TFQP2SUBVSNF · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2020-4060.html · Vendor Advisory
• https://osv.dev/vulnerability/USN-4300-1 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-4301-1 · Vendor Advisory