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CVE-2019-18282

Affected software7 products, listed below
Severity5.3 Medium CVSS 3.1 2 scores
WeaknessCWE-330
Published16 Jan 2020
Updated17 Jun 2026

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.

Exploitation status

No public exploit

No exploit has been reported in the sources we check. Published 6 years ago.

  • CISA KEV not listed
  • VulnCheck KEV not listed
  • CISA Vulnrichment no assessment published
  • Indexed PoC none indexed
  • EPSS 2.9% chance in 30 days

Waratek protection

Outside Waratek scope

A Java vulnerability, but not one Waratek protects. It affects only Java on a user's desktop (applets, Web Start, JavaFX, the installer), sits in a product the Waratek agent can't be installed into, or is in a package we don't expect in business applications. The decision below says which.

  • Protection none
  • Action not pursued none
  • Review human Researcher
  • Record active
Decided by Manual classification of this CVE in the legacy dataset
Finding A manual classification set this CVE's status to Outside Waratek scope, but the CVE names a tracked product.

CVSS

5.3 MEDIUM v3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N 2 metrics

We show the highest score from the newest CVSS version. Scores from different versions can't be compared, and the first score listed is sometimes a 0.0 placeholder.

VersionScoreBandVectorAssignerType
CVSS 3.1 5.3 MEDIUM CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N NVD Primary published
CVSS 2.0 5.0 none AV:N/AC:L/Au:N/C:P/I:N/A:N NVD Primary

Affected software and releases

Products and versions

14 products, 14 version entries
SourceVendorProductSchemeAffected versions
nvd debian debian linux generic 8.0
nvd linux linux kernel generic ≥ 4.3 and ≤ 5.3.10
nvd netapp 8300 firmware generic any version
nvd netapp 8700 firmware generic any version
nvd netapp a400 firmware generic any version
nvd netapp a700s firmware generic any version
nvd netapp active iq unified manager generic any version
nvd netapp cloud backup generic any version
nvd netapp data availability services generic any version
nvd netapp e-series santricity os controller generic ≥ 11.0.0 and ≤ 11.70.1
nvd netapp h610s firmware generic any version
nvd netapp hci management node generic any version
nvd netapp solidfire generic any version
nvd netapp steelstore cloud integrated storage generic any version

References

URLTags
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.10 Mailing List, Vendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=55667441c84fa5e0911a0aac44fb059c15ba6da2 Mailing List, Patch, Vendor Advisory
https://lists.debian.org/debian-lts-announce/2020/03/msg00001.html Mailing List, Third Party Advisory
https://security.netapp.com/advisory/ntap-20200204-0002/ Third Party Advisory
https://www.computer.org/csdl/proceedings-article/sp/2020/349700b594/1j2LgrHDR2o Third Party Advisory

Timeline

Published2020-01-16By the CVE Program.
NVD record modified2026-06-17NVD's own last-modified date for this record.