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netty

A vulnerability in netty-codec-haproxy prior to versions 4.1.135.Final and 4.2.15.Final allows an attacker to cause an IndexOutOfBoundsException by setting a PP2_TYPE_SSL TLV length below 5. This exception is not properly caught, leading to a retained slice on the pooled cumulation buffer never being released, which can cause resource exhaustion. The issue is patched in versions 4.1.135.Final and 4.2.15.Final.

Netty is a network application framework used for protocol servers and clients. In netty-codec-haproxy versions prior to 4.1.135.Final and 4.2.15.Final, when decoding a PP2_TYPE_SSL TLV, the method HAProxyMessage.readNextTLV() calls retainedSlice() on the header buffer before reading the 1-byte client field and 4-byte verify field. If the TLV length is set below 5 by an attacker, subsequent readByte/readInt calls throw an IndexOutOfBoundsException (IOOBE). Because HAProxyMessageDecoder only catches HAProxyProtocolException, the IOOBE propagates, preventing the release of the retained slice on the pooled cumulation buffer, potentially leading to resource exhaustion. The issue is fixed in versions 4.1.135.Final and 4.2.15.Final.

A vulnerability in netty-codec-haproxy prior to versions 4.1.135.Final and 4.2.15.Final allows an attacker to cause an IndexOutOfBoundsException by setting a PP2_TYPE_SSL TLV length below 5. This exception is not properly caught, leading to a retained slice on the pooled cumulation buffer never bein

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… (CVE-2026-44893)

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