Use of Incorrect Operator Affecting rust-hickory-net package, versions <0.26.3-1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.28% (21st percentile)

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  • Snyk IDSNYK-DEBIAN14-RUSTHICKORYNET-22382155
  • published9 Nov 2026
  • disclosed8 Nov 2026

Introduced: 8 Nov 2026

NewCVE-2026-123601  (opens in a new tab)
CWE-480  (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.

Hickory DNS hickory-proto 0.25.0 through 0.26.0-alpha.1 and hickory-net 0.26.0-beta.1 before 0.26.2 invert the relational operators in the wrap-around branch of find_covering_record() in nsec3.rs, so the last NSEC3 record in a zone's hash ring covers every hash except its owner. Attackers able to inject DNS responses can replay that NSEC3 record and its RRSIG to forge DNSSEC-validated negative responses denying legitimate names.

CVSS Base Scores

version 3.1