PT-2019-5265 · Linux+4 · Linux Kernel+4

Published 2019-10-18 · Updated 2021-05-28 · CVE-2019-19047

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 mlx5 fw fatal reporter dump() function in the Linux kernel, which is associated with an uncontrolled resource consumption, also known as a resource exhaustion issue. Exploitation of this issue may allow an attacker to cause a denial of service by triggering mlx5 crdump collect() failures, resulting in 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 mlx5 fw fatal reporter dump() function to minimize the risk of exploitation.

Fix

DoS

Memory Leak

Resource Exhaustion

Weakness Enumeration

CWE-401

CWE-400

Related Identifiers

ALT-PU-2019-3131

ALT-PU-2019-3155

ALT-PU-2019-3184

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:2020-02158

CESA-2020_1567

CESA-2020_1769

CVE-2019-19047

RHSA-2020:1567

RHSA-2020:1769

RHSA-2020_1567

RHSA-2020_1769

USN-4225-1

Affected Products

Alt Linux

Centos

Linux Kernel

Red Hat

Ubuntu

References · 38

• https://github.com/torvalds/linux/commit/c7ed6d0183d5ea9bc31bcaeeba4070bd62546471 · Patch
• https://ubuntu.com/security/CVE-2019-14895 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-18660 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-19052 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-19072 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2019-19047 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-19044 · Vendor Advisory
• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.11 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2019-19047 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-16231 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-19534 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-19047 · Security Note
• https://ubuntu.com/security/CVE-2019-14901 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-14896 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-19807 · Vendor Advisory