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CVE-2026-116539

CVE-2026-116539 · Netty netty-tcnative before 2.0.84.Final Heap Buffer Overflow via OpenSSL BIO

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

Netty netty-tcnative before 2.0.84.Final contains a heap buffer overflow vulnerability in the tcn_write_to_bytebuffer BIO callback caused by failing to wrap the non-application ring buffer write index. Remote TLS peers can drive handshake, renegotiation, or post-handshake messages into this buffer, triggering an out-of-bounds memcpy that crashes the JVM process.

CVSS 8.2 · High · EPSS 0.4% · 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

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