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CVE-2026-56816

Опубликовано: 21 июл. 2026
Источник: redhat
CVSS3: 7.5

Описание

Netty is a network application framework for development of protocol servers and clients. Prior to 4.2.16.Final, Netty's Http3FrameCodec buffers incoming data for HTTP/3 reserved frame types up to the wire-specified payload length without limits; decodeFrame trusts payLoadLength, allowing an attacker to open multiple QUIC streams and send reserved frames with very large payload lengths to cause memory exhaustion and denial of service. This issue is fixed in version 4.2.16.Final.

A flaw was found in Netty. An unauthenticated remote attacker can exploit a vulnerability in Netty's Http3FrameCodec by sending specially crafted HTTP/3 reserved frames with excessive payload lengths. This can lead to uncontrolled memory buffering, causing memory exhaustion and a denial of service (DoS) for the affected system.

Отчет

This denial of service vulnerability in Netty's HTTP/3 implementation can lead to memory exhaustion in affected Red Hat OpenShift AI deployments. An unauthenticated remote attacker could exploit this by sending specially crafted HTTP/3 reserved frames with large payload lengths, potentially disrupting service availability. The impact is significant due to the potential for complete service disruption without requiring authentication.

Меры по смягчению последствий

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

Затронутые пакеты

ПлатформаПакетСостояниеРекомендацияРелиз
Red Hat OpenShift AI (RHOAI)rhoai/odh-th-torch-cpu-py312-rhel9Affected
Red Hat OpenShift AI (RHOAI)rhoai/odh-th-torch-cuda-py312-rhel9Affected
Red Hat OpenShift Dev Spacesdevspaces/openvsx-rhel9Not affected
Red Hat OpenShift Dev Spacesdevspaces/pluginregistry-rhel9Not affected

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Дополнительная информация

Статус:

Important
Дефект:
CWE-770
https://bugzilla.redhat.com/show_bug.cgi?id=2505424io.netty:netty-codec-http3: Netty: Denial of Service due to uncontrolled memory buffering in HTTP/3

7.5 High

CVSS3

Связанные уязвимости

CVSS3: 7.5
ubuntu
2 месяца назад

Netty is a network application framework for development of protocol servers and clients. Prior to 4.2.16.Final, Netty's `Http3FrameCodec` buffers incoming data for HTTP/3 reserved frame types up to the wire-specified payload length without limits; `decodeFrame` trusts `payLoadLength`, allowing an attacker to open multiple QUIC streams and send reserved frames with very large payload lengths to cause memory exhaustion and denial of service. This issue is fixed in version 4.2.16.Final.

CVSS3: 7.5
nvd
2 месяца назад

Netty is a network application framework for development of protocol servers and clients. Prior to 4.2.16.Final, Netty's `Http3FrameCodec` buffers incoming data for HTTP/3 reserved frame types up to the wire-specified payload length without limits; `decodeFrame` trusts `payLoadLength`, allowing an attacker to open multiple QUIC streams and send reserved frames with very large payload lengths to cause memory exhaustion and denial of service. This issue is fixed in version 4.2.16.Final.

CVSS3: 7.5
debian
2 месяца назад

Netty is a network application framework for development of protocol s ...

CVSS3: 7.5
github
2 месяца назад

Netty: Memory Exhaustion via HTTP/3 Reserved Frame Types

7.5 High

CVSS3

Уязвимость CVE-2026-56816