libnetty-java: Netty is an asynchronous, event-driven network application framework
CVE-2025-55163 is fixed in 3 products on 1 platform, first by DEBIAN-CVE-2025-55163, released August 13, 2025. It is not reported as exploited. Patch Radar priority: High.
Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.124.Final and 4.2.4.Final, Netty is vulnerable to MadeYouReset DDoS. This is a logical vulnerability in the HTTP/2 protocol, that uses malformed HTTP/2 control frames in order to break the max concurrent streams limit - which results in resource exhaustion and distributed denial of service. This issue has been patched in versions 4.1.124.Final and 4.2.4.Final.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| libnetty-java · Ubuntu 18.04.6 LTS (bionic) | 1:4.1.7-4ubuntu0.1+esm7 | libnetty-java 1:4.1.7-4ubuntu0.1+esm7 | Dec 15, 2025 |
| libnetty-java · Ubuntu 20.04 LTS (focal) | 1:4.1.45-1ubuntu0.1~esm7 | libnetty-java 1:4.1.45-1ubuntu0.1~esm7 | Dec 15, 2025 |
| libnetty-java · Ubuntu 22.04.1 LTS (jammy) | 1:4.1.48-4+deb11u2ubuntu0.2+esm1 | libnetty-java 1:4.1.48-4+deb11u2ubuntu0.2+esm1 | Dec 15, 2025 |
| libnetty-java · Ubuntu 24.04.5 LTS (noble) | 1:4.1.48-9ubuntu0.2+esm1 | libnetty-java 1:4.1.48-9ubuntu0.2+esm1 | Dec 15, 2025 |
| netty · Debian 12.15 (bookworm) | 1:4.1.48-7+deb12u2 | DSA-6160-1 | Mar 11, 2026 |
| netty · Debian 13.5 (trixie) | 1:4.1.48-10+deb13u1 | DSA-6160-1 | Mar 11, 2026 |
| netty · Debian 14 | 1:4.1.48-11 | DEBIAN-CVE-2025-55163 | Aug 13, 2025 |
| netty · opensuse-leap 15.6 | 4.1.126-150200.4.34.1 | SUSE-SU-2025:03114-1 | Sep 9, 2025 |
| netty · sles 15.6 | 4.1.126-150200.4.34.1 | SUSE-SU-2025:03114-1 | Sep 9, 2025 |
| netty · sles 15.7 | 4.1.126-150200.4.34.1 | SUSE-SU-2025:03114-1 | Sep 9, 2025 |
| netty-tcnative · opensuse-leap 15.6 | 2.0.73-150200.3.30.1 | SUSE-SU-2025:03114-1 | Sep 9, 2025 |
| netty-tcnative · sles 15.6 | 2.0.73-150200.3.30.1 | SUSE-SU-2025:03114-1 | Sep 9, 2025 |
| netty-tcnative · sles 15.7 | 2.0.73-150200.3.30.1 | SUSE-SU-2025:03114-1 | Sep 9, 2025 |
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