Incorrect Behavior Order Affecting rust-hickory-net package, versions <0.26.3-1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.37% (31st percentile)

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  • Snyk IDSNYK-DEBIAN14-RUSTHICKORYNET-22382156
  • published9 Nov 2026
  • disclosed8 Nov 2026

Introduced: 8 Nov 2026

NewCVE-2026-123584  (opens in a new tab)
CWE-696  (opens in a new tab)

How to fix?

Upgrade Debian:14 rust-hickory-net to version 0.26.3-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream rust-hickory-net package and not the rust-hickory-net package as distributed by Debian. See How to fix? for Debian:14 relevant fixed versions and status.

The hickory-net crate in Hickory DNS 0.26.0 before 0.26.2 stops listening and returns an error when a client UDP connection receives a datagram that cannot be parsed as a DNS message. Remote attackers who guess the query's source port, without knowing the transaction ID, can spoof malformed responses to abort client queries, causing denial of service.

CVSS Base Scores

version 3.1