CVE-2026-42583

Description

Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and 4.1.133.Final, Lz4FrameDecoder allocates a ByteBuf of size decompressedLength (up to 32 MB per block) before LZ4 runs. A peer only needs a 21-byte header plus compressedLength payload bytes - 22 bytes if compressedLength == 1 - to force that allocation. This vulnerability is fixed in 4.2.13.Final and 4.1.133.Final.

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Produits concernés

• netty
• io.netty netty-codec
• io.netty netty-codec-compression
• Netty netty

Scores CVSS

Faiblesses (CWE)

• CWE-400
• CWE-770

Références

• https://github.com/netty/netty/security/advisories/GHSA-mj4r-2hfc-f8p6 ExploitVendor Advisory
• https://github.com/netty/netty/security/advisories/GHSA-mj4r-2hfc-f8p6 ExploitVendor Advisory

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories