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7.5 High

CVE-2026-44893 Netty is a network application framework for development of protocol servers and clients

Description

Netty is a network application framework for development of protocol servers and clients. In netty-codec-haproxy prior to versions 4.1.135.Final and 4.2.15.Final, when decoding a PP2_TYPE_SSL TLV, HAProxyMessage.readNextTLV() first calls `header.retainedSlice(header.readerIndex(), length)` and only then reads the 1-byte client field and 4-byte verify field. If the attacker sets the TLV length below 5, the subsequent readByte/readInt throws IndexOutOfBoundsException. HAProxyMessageDecoder only catches HAProxyProtocolException around this call, so the IOOBE propagates and the retained slice on the pooled cumulation buffer is never released. Versions 4.1.135.Final and 4.2.15.Final patch the issue.

Affected products and versions

Product Affected versions Fixed in
netty 4.2 4.2.0.Final → < 4.2.15.Final 4.2.15.Final
netty 4.1 earliest → < 4.1.135.Final 4.1.135.Final
Red Hat Build of Apache Camel 3.33 for Quarkus 3.33.2.SP1 Versions not published
Red Hat build of Quarkus 3.27.4.SP1 Versions not published
Red Hat build of Quarkus 3.33.2.SP1 Versions not published
Cryostat 4 Versions not published
OpenShift Serverless Versions not published
Red Hat AMQ Broker 7 Versions not published
Red Hat build of Apache Camel - HawtIO 4 Versions not published
Show the 28 other branches
Product Affected versions Fixed in
Red Hat build of Apache Camel 4 for Quarkus 3 Versions not published
Red Hat build of Apache Camel for Spring Boot 4 Versions not published
Red Hat build of Apicurio Registry 3 Versions not published
Red Hat build of Debezium 3 Versions not published
Red Hat Build of Keycloak Versions not published
Red Hat Data Grid 8 Versions not published
Red Hat Fuse 7 Versions not published
Red Hat JBoss Enterprise Application Platform 7 Versions not published
Red Hat JBoss Enterprise Application Platform Expansion Pack Versions not published
Red Hat OpenShift AI (RHOAI) Versions not published
Red Hat OpenShift Dev Spaces Versions not published
streams for Apache Kafka 2 Versions not published
streams for Apache Kafka 3 Versions not published
Red Hat Satellite 6 Versions not published
Red Hat Single Sign-On 7 Versions not published
Streams for Apache Kafka 2.9.4 Versions not published
Red Hat OpenShift Dev Spaces 3.29 1782989027 earliest → < 1782989027 1782989027
Red Hat build of Apache Camel 4.18.1.P1 for Spring Boot 3.5.16 Versions not published
Red Hat Data Grid 8.6.2 Versions not published
Cryostat 4 on RHEL 9 4.2 earliest → < 4.2.0-13 4.2.0-13
Red Hat JBoss Enterprise Application Platform 8.1 Versions not published
Red Hat JBoss Enterprise Application Platform 7.4.25 Versions not published
Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 Versions not published
Streams for Apache Kafka 3.2.1 Versions not published
Red Hat OpenShift AI 2.25 1788198681 earliest → < 1788198681 1788198681
Red Hat AMQ Broker 7.14.1 Versions not published
Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 8 Versions not published
Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 9 Versions not published

References

Timeline

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Other CVEs of netty

The 95 CVEs of netty →
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