PT-2019-3979 · Linux+6 · Linux Kernel+6

Published 2019-10-24 · Updated 2021-05-28 · CVE-2019-18809

Positive Technologies (AI Summary)

CVSS v2.0

4.9

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 5.3.9

Description The issue is related to a memory leak in the af9005 identify state() function, which can lead to uncontrolled resource consumption. This can be exploited by a remote attacker to cause a denial of service, specifically through memory consumption.

Recommendations For Linux kernel versions prior to 5.3.9, update to version 5.3.9 or later to resolve the issue. As a temporary workaround, consider restricting access to the af9005 identify state() function to minimize the risk of exploitation.

Fix

DoS

Memory Leak

Resource Exhaustion

Weakness Enumeration

CWE-401

CWE-400

Related Identifiers

ALSA-2020:4431

ALT-PU-2019-3113

ALT-PU-2019-3136

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:2019-04510

CESA-2020_4431

CESA-2020_4609

CVE-2019-18809

DLA-2114-1

OPENSUSE-SU-2019:2675-1

OPENSUSE-SU-2019_2675-1

RHSA-2020:4431

RHSA-2020:4609

RHSA-2020_4431

RHSA-2020_4609

SUSE-SU-2019:3200-1

SUSE-SU-2019:3289-1

SUSE-SU-2019:3316-1

SUSE-SU-2019:3317-1

SUSE-SU-2019:3371-1

SUSE-SU-2019:3372-1

SUSE-SU-2019:3381-1

SUSE-SU-2020:0093-1

SUSE-SU-2020:0599-1

SUSE-SU-2020:0613-1

USN-4285-1

USN-4287-1

USN-4287-2

USN-4300-1

Affected Products

Alt Linux

Almalinux

Centos

Linux Kernel

Red Hat

Suse

Ubuntu

References · 696

• https://github.com/torvalds/linux/commit/2289adbfa559050d2a38bcd9caac1c18b800e928 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2019-18809 · Security Note
• https://ubuntu.com/security/CVE-2019-19332 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-19063 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-19059 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-19043 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-19078 · Vendor Advisory
• https://usn.ubuntu.com/4300-1 · Vendor Advisory
• https://osv.dev/vulnerability/USN-4287-2 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-19058 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2019:3289-1 · Vendor Advisory
• https://osv.dev/vulnerability/USN-4287-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-15099 · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2020-4431.html · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-19057 · Vendor Advisory