netty-codec-http2: ByteBuf Reference-Count Leak in DelegatingDecompressorFrameListener Leads to Memory Exhaustion
Impact
The DelegatingDecompressorFrameListener class orchestrates HTTP/2 decompression by embedding a per-stream EmbeddedChannel that runs the appropriate decompression codec (gzip, deflate, zstd) and forwards decompressed chunks to a wrapped listener. Each decompressed chunk is a pooled ByteBuf handed to an anonymous ChannelInboundHandlerAdapter tail handler, which becomes the sole owner responsible for releasing it.
A remote peer could send frames that would result in the flow-controller throwing and so trigger a resource leak which at the end might take down the whole JVM due OOME.
Software afectado
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| Plataforma | Paquete | Versiones vulnerables | Corregida en |
|---|---|---|---|
| Java / Kotlin (Maven) | io.netty:netty-codec-http2 | < 4.1.135.Final, >= 4.2.0.Alpha1, < 4.2.15.Final | 4.1.135.Final, 4.2.15.Final |
Referencias
- https://github.com/netty/netty/security/advisories/GHSA-c2gf-v879-257j
- https://nvd.nist.gov/vuln/detail/CVE-2026-48043
- https://github.com/netty/netty/commit/db6138b168699736a6463c367e12ad0a4c36a25e
- https://github.com/netty/netty/commit/3d45a1e4e8eb99144f716e54be5ac57e525fa7ca
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-48043.json
- https://github.com/netty/netty/releases/tag/netty-4.2.15.Final
- https://github.com/netty/netty/releases/tag/netty-4.1.135.Final
- https://github.com/netty/netty
- https://bugzilla.redhat.com/show_bug.cgi?id=2488442
- https://access.redhat.com/security/cve/CVE-2026-48043
- https://access.redhat.com/errata/RHSA-2026:66488
- https://access.redhat.com/errata/RHSA-2026:65126
- https://access.redhat.com/errata/RHSA-2026:54435
- https://access.redhat.com/errata/RHSA-2026:53806
- https://access.redhat.com/errata/RHSA-2026:53646
- https://access.redhat.com/errata/RHSA-2026:53645
- https://access.redhat.com/errata/RHSA-2026:53644
- https://access.redhat.com/errata/RHSA-2026:50085
- https://access.redhat.com/errata/RHSA-2026:48151
- https://access.redhat.com/errata/RHSA-2026:48124
- https://access.redhat.com/errata/RHSA-2026:41951
- https://access.redhat.com/errata/RHSA-2026:37390
- https://access.redhat.com/errata/RHSA-2026:36820
- https://access.redhat.com/errata/RHSA-2026:34608
- https://access.redhat.com/errata/RHSA-2026:26586
- https://access.redhat.com/errata/RHSA-2026:26018
- https://access.redhat.com/errata/RHSA-2026:26017
- Vector CVSS
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L- Debilidad (CWE)
CWE-400, CWE-401, CWE-772- Plataforma
- Java / Kotlin (Maven)
- Paquete
io.netty:netty-codec-http2- Publicada
- 11.06.2026
- Actualizado
- 11.10.2026 13:20
Fuentes y licencias
OSV / GitHub Advisory Database - GHSA-c2gf-v879-257j - CC BY 4.0
Historial de vulnerabilidades: io.netty:netty-codec-http2
Todas las vulnerabilidades publicadas de este paquete (Java / Kotlin (Maven)), de la más reciente a la más antigua. Muestra si es un fallo aislado o un paquete que hay que vigilar.
- Entradas en total
- 11
- Primera → última
- 03.2021 07.2026
- Sin corrección
- 0
- Explotada en ataques
- 0
Distribución por gravedad
- Alta 5
- Media 6
Divulgaciones por año
- 2021: 2
- 2022: 0
- 2023: 1
- 2024: 0
- 2025: 1
- 2026: 7
-
netty-codec-http2: ByteBuf Reference-Count Leak in DelegatingDecompressorFrameListener Leads to Memory Exhaustion esta entrada
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