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CVE PROGRAM SOURCE RECORD8.2 High

CVE-2026-116539

Netty netty-tcnative before 2.0.84.Final Heap Buffer Overflow via OpenSSL BIO

Description

Netty netty-tcnative before 2.0.84.Final contains a heap buffer overflow vulnerability in the tcn_write_to_bytebuffer BIO callback caused by failing to wrap the non-application ring buffer write index. Remote TLS peers can drive handshake, renegotiation, or post-handshake messages into this buffer, triggering an out-of-bounds memcpy that crashes the JVM process.

Affected products

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

netty netty-tcnative

Default version status: unaffected

  • 0 to < 2.0.84.Finalaffected
pkg:maven/io.netty/netty-tcnative

netty netty-tcnative-boringssl-static

Default version status: unaffected

  • 0 to < 2.0.84.Finalaffected
pkg:maven/io.netty/netty-tcnative-boringssl-static

References