Improper Input Validation Affecting netty-tcnative package, versions <2.0.77-150200.3.39.1


Severity

Recommended
0.0
high
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.97% (58th percentile)

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  • Snyk IDSNYK-SLES155-NETTYTCNATIVE-17278651
  • published10 Jun 2026
  • disclosed9 Jun 2026

Introduced: 9 Jun 2026

CVE-2026-42579  (opens in a new tab)
CWE-20  (opens in a new tab)
CWE-400  (opens in a new tab)
CWE-626  (opens in a new tab)

How to fix?

Upgrade SLES:15.5 netty-tcnative to version 2.0.77-150200.3.39.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream netty-tcnative package and not the netty-tcnative package as distributed by SLES. See How to fix? for SLES:15.5 relevant fixed versions and status.

Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and 4.1.133.Final, Netty's DNS codec does not enforce RFC 1035 domain name constraints during either encoding or decoding. This creates a bidirectional attack surface: malicious DNS responses can exploit the decoder, and user-influenced hostnames can exploit the encoder. This vulnerability is fixed in 4.2.13.Final and 4.1.133.Final.

CVSS Base Scores

version 3.1