UBUNTU-CVE-2026-45416

Netty is a network application framework for development of protocol servers and clients. Prior to versions 4.1.135.Final and 4.2.15.Final, SslClientHelloHandler.decode reads the 24-bit TLS handshake length and, when the ClientHello does not fit in the first record, eagerly allocates...

EUVD-2026-36436

Netty is a network application framework for development of protocol servers and clients. Prior to versions 4.1.135.Final and 4.2.15.Final, SslClientHelloHandler.decode reads the 24-bit TLS handshake length and, when the ClientHello does not fit in the first record, eagerly allocates...

CVE-2026-45416

Netty CVE-2026-45416 affects pre-4.1.135.Final and pre-4.2.15.Final versions. In SslClientHelloHandler.decode(), the 24-bit TLS handshake length is read and, if a ClientHello does not fit in the first record, Netty eagerly allocates ctx.alloc().buffer(handshakeLength). If maxClientHelloLength is ...

Netty: SNI handler pre-allocates up to 16 MiB from nine attacker bytes

SslClientHelloHandler.decode reads the 24-bit TLS handshake length and, when the ClientHello does not fit in the first record, eagerly allocates ctx.alloc.bufferhandshakeLength line 161. The guard at line 140 is handshakeLength maxClientHelloLength && maxClientHelloLength != 0, and the...

PT-2026-47607

Name of the Vulnerable Software and Affected Versions Netty ionetty:netty-handler affected versions not specified Description An uncontrolled memory allocation issue exists in the SslClientHelloHandler.decode function. When a ClientHello does not fit in the first record, the system eagerly...