PT-2019-4209 · Linux+5 · Linux Kernel+5

Published 2019-10-09 · Updated 2021-05-28 · CVE-2019-19058

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

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

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

Description A memory leak in the alloc sgtable() function in the Linux kernel allows attackers to cause a denial of service (memory consumption) by triggering alloc page() failures. This issue is related to the drivers/net/wireless/intel/iwlwifi/fw/dbg.c file. The vulnerability can be exploited by remote attackers to cause a denial of service.

Recommendations For Linux kernel versions prior to 5.3.11, update to a version that includes the fix for this issue to prevent memory leaks and potential denial of service attacks. As a temporary workaround, consider restricting access to the alloc sgtable() 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:2019-04806

CESA-2020_1567

CESA-2020_1769

CESA-2020_4060

CVE-2019-19058

OPENSUSE-SU-2019:2675-1

OPENSUSE-SU-2019_2675-1

RHSA-2020:1567

RHSA-2020:1769

RHSA-2020:4060

RHSA-2020:4062

RHSA-2020_1567

RHSA-2020_1769

RHSA-2020_4060

RHSA-2020_4062

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-4300-1

USN-4301-1

USN-4302-1

Affected Products

Alt Linux

Centos

Linux Kernel

Red Hat

Suse

Ubuntu

References · 626

• https://github.com/torvalds/linux/commit/b4b814fec1a5a849383f7b3886b654a13abbda7d · Patch
• https://ubuntu.com/security/notices/USN-4302-1 · Vendor Advisory
• https://usn.ubuntu.com/4302-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-19059 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-19043 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/O3PSDE6PTOTVBK2YTKB2TFQP2SUBVSNF · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-15217 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/[e-mail]/message/PY7LJMSPAGRIKABJPDKQDTXYW3L5RX2T · Vendor Advisory
• https://usn.ubuntu.com/4300-1 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2019-19058 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-19058 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2019:3289-1 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-4301-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-3016 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2019:3371-1 · Vendor Advisory