CVE-2019-18282

Name: CVE-2019-18282
Creator: NVD / NIST
Published: 2020-01-16T16:15:16.95+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 2.60%

Last modified Jun 17, 2026

CVE-2019-18282 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. The flow_dissector feature in the Linux kernel 4.3 through 5.x before 5.3.10 has a device tracking vulnerability, aka CID-55667441c84f. This occurs because the auto flowlabel of a UDP IPv6 packet relies on a 32-bit hashrnd value as a secret, and because jhash (instead of siphash) is used. EPSS estimates a 2.60% chance of exploitation in the next 30 days.

Description

The flow_dissector feature in the Linux kernel 4.3 through 5.x before 5.3.10 has a device tracking vulnerability, aka CID-55667441c84f. This occurs because the auto flowlabel of a UDP IPv6 packet relies on a 32-bit hashrnd value as a secret, and because jhash (instead of siphash) is used. The hashrnd value remains the same starting from boot time, and can be inferred by an attacker. This affects net/core/flow_dissector.c and related code.

Metrics

CVSS 3.1

5.3/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS Probability

2.60%

83.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-330

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	>= 4.3, <= 5.3.10
Debian	Debian Linux	8.0
Netapp	A700s Firmware	All versions
Netapp	8300 Firmware	All versions
Netapp	8700 Firmware	All versions
Netapp	A400 Firmware	All versions
Netapp	H610s Firmware	All versions
Netapp	Active Iq Unified Manager	All versions
Netapp	Cloud Backup	All versions
Netapp	Data Availability Services	All versions
Netapp	E-Series Santricity Os Controller	>= 11.0.0, <= 11.70.1
Netapp	Hci Management Node	All versions
Netapp	Solidfire	All versions
Netapp	Steelstore Cloud Integrated Storage	All versions

References

https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.10Mailing List, Vendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=55667441c84fa5e0911a0aac44fb059c15ba6da2Mailing List, Patch, Vendor Advisory
https://lists.debian.org/debian-lts-announce/2020/03/msg00001.htmlMailing List, Third Party Advisory
https://security.netapp.com/advisory/ntap-20200204-0002/Third Party Advisory
https://www.computer.org/csdl/proceedings-article/sp/2020/349700b594/1j2LgrHDR2oThird Party Advisory
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.10Mailing List, Vendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=55667441c84fa5e0911a0aac44fb059c15ba6da2Mailing List, Patch, Vendor Advisory
https://lists.debian.org/debian-lts-announce/2020/03/msg00001.htmlMailing List, Third Party Advisory
https://security.netapp.com/advisory/ntap-20200204-0002/Third Party Advisory
https://www.computer.org/csdl/proceedings-article/sp/2020/349700b594/1j2LgrHDR2oThird Party Advisory

Timeline

Published: Jan 16, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-18282?

How severe is CVE-2019-18282?

CVE-2019-18282 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 2.60% probability of exploitation in the next 30 days.

How do I fix CVE-2019-18282?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-18282?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST