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CVE PROGRAM SOURCE RECORD7.5 High

CVE-2026-44893

Netty: HAProxy SSL TLV parsing leaks retained slice on invalid TLV length

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Status
Published
Published
Updated
Assigning organization
GitHub_M

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

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

netty netty

  • >= 4.2.0.Final, < 4.2.15.Finalaffected
  • < 4.1.135.Finalaffected

References