p PatchFirst

CVE-2026-116541

CVE-2026-116541 · netty-tcnative before 2.0.84.Final Denial of Service via BIO Write Overcount

This page contains facts from public vulnerability sources. Check the original advisory before updating.

Netty netty-tcnative before 2.0.84.Final contains a denial of service vulnerability in the tcn_write_to_bytebuffer BIO write callback that overreports bytes consumed. Remote TLS 1.3 peers can provoke queued post-handshake records like NewSessionTicket or KeyUpdate to truncate flights, fail connections, or abort the JVM process.

CVSS 8.2 · High · EPSS 0.5% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • netty-tcnative

    Versions
    • ≥ 0, < 2.0.84.Final: Affected (custom)

    Update to 2.0.84.Final

  • netty-tcnative-boringssl-static

    Versions
    • ≥ 0, < 2.0.84.Final: Affected (custom)

    Update to 2.0.84.Final

  • netty-tcnative Debian:12

    Versions
    • 2.0.28-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • netty-tcnative Debian:13

    Versions
    • 2.0.28-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • netty-tcnative Debian:14

    Versions
    • 2.0.28-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • netty-tcnative Ubuntu:16.04:LTS

    Versions
    • 1.1.33.Fork6-1
    • 1.1.33.Fork10-2
    • 1.1.33.Fork14-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • netty-tcnative Ubuntu:18.04:LTS

    Versions
    • 1.1.33.Fork26-1
    • 1.1.33.Fork26-1build1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • netty-tcnative Ubuntu:20.04:LTS

    Versions
    • 2.0.20-1
    • 2.0.28-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • netty-tcnative Ubuntu:22.04:LTS

    Versions
    • 2.0.28-1
    • 2.0.28-1build1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • netty-tcnative Ubuntu:24.04:LTS

    Versions
    • 2.0.28-1build1
    • 2.0.28-1build2
    • 2.0.28-1build3
    • 2.0.28-1build4
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • netty-tcnative Ubuntu:26.10

    Versions
    • 2.0.28-1build5
    • 2.0.28-1build6
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • netty-tcnative Ubuntu:26.04:LTS

    Versions
    • 2.0.28-1build4
    • 2.0.28-1build5
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

Check your server →