PT-2019-4399 · Linux+2 · Linux Kernel+2

Published 2019-09-27 · Updated 2021-05-28 · CVE-2019-19080

Positive Technologies (AI Summary)

CVSS v2.0

7.1

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 5.3.4

Description The issue is related to the nfp flower spawn phy reprs() function in the Linux kernel, which is associated with an uncontrolled resource consumption. This can be exploited by a remote attacker to cause a denial of service, specifically through memory consumption. The function is located in drivers/net/ethernet/netronome/nfp/flower/main.c.

Recommendations For Linux kernel versions prior to 5.3.4, update to version 5.3.4 or later to resolve the issue. As a temporary workaround, consider restricting access to the nfp flower spawn phy reprs() function to minimize the risk of exploitation.

Fix

DoS

Memory Leak

Resource Exhaustion

Weakness Enumeration

CWE-401

CWE-400

Related Identifiers

ALT-PU-2019-2838

ALT-PU-2019-2845

ALT-PU-2019-2891

ALT-PU-2020-1198

ALT-PU-2020-1501

ALT-PU-2020-1714

ALT-PU-2020-2410

ALT-PU-2020-2433

ALT-PU-2021-1870

BDU:2020-00121

CVE-2019-19080

OPENSUSE-SU-2019:2675-1

OPENSUSE-SU-2019_2675-1

SUSE-SU-2019:3200-1

SUSE-SU-2019:3317-1

SUSE-SU-2019:3372-1

SUSE-SU-2020:0093-1

SUSE-SU-2020:0613-1

Affected Products

Alt Linux

Linux Kernel

Suse

References · 584

• https://github.com/torvalds/linux/commit/8572cea1461a006bce1d06c0c4b0575869125fa4 · Patch
• https://osv.dev/vulnerability/openSUSE-SU-2019:2675-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2019:3200-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2020:0613-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2019:3317-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2019-19080 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-19080 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2019:3372-1 · Vendor Advisory
• http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00029.html · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2020:0093-1 · Vendor Advisory
• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.4 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2019-19080 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2019-19080 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-19080 · Vendor Advisory
• https://bdu.fstec.ru/vul/2020-00121 · Security Note