PT-2019-4100 · Linux+2 · Linux Kernel+2

Published 2019-10-23 · Updated 2024-08-27 · CVE-2019-19049

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 5.3.10

Description A memory leak in the unittest data add() function in drivers/of/unittest.c allows attackers to cause a denial of service (memory consumption) by triggering of fdt unflatten tree() failures. The relevance of this issue is disputed by third parties because unittest.c can only be reached during boot.

Recommendations For Linux kernel versions prior to 5.3.10, update to version 5.3.10 or later to resolve the issue. As a temporary workaround, consider restricting access to the unittest data add() function until a patch is available.

Fix

DoS

Memory Leak

Resource Exhaustion

Weakness Enumeration

CWE-401

CWE-400

Related Identifiers

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:2019-04669

CVE-2019-19049

OPENSUSE-SU-2019:2675-1

OPENSUSE-SU-2019_2675-1

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

Affected Products

Alt Linux

Linux Kernel

Suse

References · 600

• https://github.com/torvalds/linux/commit/e13de8fe0d6a51341671bbe384826d527afe8d44 · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2019-19049 · Vendor Advisory
• https://bdu.fstec.ru/vul/2019-04669 · Security Note
• https://osv.dev/vulnerability/CVE-2019-19049 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-19049 · Security Note
• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.10 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2019:3289-1 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2019-19049 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2019:3371-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2019:3317-1 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2019:2675-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-19049 · Vendor Advisory
• http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00029.html · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2019-19049 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2019:3381-1 · Vendor Advisory