CVE-2026-42583 Netty: Lz4FrameDecoder resource exhaustion

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...

CVE-2026-42583

CVE-2026-42583 (Netty) affects Netty’s Lz4FrameDecoder. Before versions 4.2.13.Final and 4.1.133.Final, Lz4FrameDecoder allocates a ByteBuf sized to decompressedLength (up to 32 MB per block) prior to running the LZ4 step. A peer can trigger this allocation with only a 21-byte header plus compres...

Security Bulletin: IBM Automation Decision Services for April 2026- Multiple CVEs addressed

Summary In addition to many updates of operating system level packages, the following security vulnerabilities are addressed with IBM Automation Decision Services. See full list below. Vulnerability Details CVEID:CVE-2025-12183 DESCRIPTION: Out-of-bounds memory operations in org.lz4:lz4-java 1.8....

GHSA-MJ4R-2HFC-F8P6 Netty Lz4FrameDecoder is vulnerable to resource exhaustion

Summary 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. Details...

Allocation of Resources Without Limits or Throttling

Overview io.netty:netty-codec is an event-driven asynchronous network application framework. Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling in the Lz4FrameDecoder component. An attacker can cause excessive memory allocation by sending...

Allocation of Resources Without Limits or Throttling

Overview Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling in the Lz4FrameDecoder component. An attacker can cause excessive memory allocation by sending specially crafted compressed data with manipulated header fields, leading to resource...

Security Bulletin: IBM App Connect Enterprise Certified Container IntegrationRuntime and IntegrationServer operands that use Kafka connectors are vulnerable to loss of confidentiality (CVE-2025-12183, CVE-2025-66566)

Summary Java module lz4 is used by IBM App Connect Enterprise Certified Container when connecting to Kafka servers. IBM App Connect Enterprise Certified Container IntegrationRuntime and IntegrationServer operands that use Kafka connectors are vulnerable to loss of confidentiality. This bulletin...

CLSA-2026-1777307383 lz4: Fix of CVE-2021-3520

CVE-2021-3520: Fix potential memory corruption with negative memmove size...

Security Bulletin: Multiple Vulnerabilities in IBM Application Performance Management

Summary Multiple vulnerabilities were addressed in IBM Application Performance Management 8.1.4.0 IF19 patch. Vulnerability Details CVEID:CVE-2022-39135 DESCRIPTION: Apache Calcite 1.22.0 introduced the SQL operators EXISTSNODE, EXTRACTXML, XMLTRANSFORM and EXTRACTVALUE do not restrict XML Extern...

Security Bulletin: IBM Watson Discovery Cartridge affected by vulnerability in lz4-java-1.8.0.jar

Summary IBM Watson Discovery Cartridge affected by vulnerability in lz4-java-1.8.0.jar Vulnerability Details CVEID:CVE-2025-12183 DESCRIPTION: Out-of-bounds memory operations in org.lz4:lz4-java 1.8.0 and earlier allow remote attackers to cause denial of service and read adjacent memory via...

Security Bulletin: IBM App Connect Enterprise and IBM Integration Bus for z/OS are vulnerable to multiple vulnerabilities due to lz4 and Apache Log4j (CVE-2025-12183, CVE-2025-66566 & CVE-2025-68161 )

Summary Users of Kafka features in IBM App Connect Enterprise and IBM Integration Bus for z/OS and the jdbcConnector in IBM App Connect Enterprise are vulnerable to multiple vulnerabilities due to lz4 and Apache Log4j. Vulnerability Details CVEID:CVE-2025-12183 DESCRIPTION: Out-of-bounds memory...

Medium: rust

Issue Overview: Decompressing invalid LZ4 data can leak data from uninitialized memory, or can leak content from previous decompression operations when reusing an output buffer. CVE-2026-32829 Affected Packages: rust Note: This advisory is applicable to Amazon Linux 2 AL2 Core repository. Visit...

Amazon Linux 2 : rust, --advisory ALAS2-2026-3225 (ALAS-2026-3225)

The version of rust installed on the remote host is prior to 1.93.0-1. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2026-3225 advisory. Decompressing invalid LZ4 data can leak data from uninitialized memory, or can leak content from previous decompression operations wh...

Linux Distros Unpatched Vulnerability : CVE-2026-32829

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - lz4flex is a pure Rust implementation of LZ4 compression/decompression. In versions 0.11.5 and below, and 0.12.0, decompressing invalid LZ4 data can leak...

GHSA-VVP9-7P8X-RFVV lz4_flex's decompression can leak information from uninitialized memory or reused output buffer

Summary Decompressing invalid LZ4 data can leak data from uninitialized memory, or can leak content from previous decompression operations when reusing an output buffer. Details The LZ4 block format defines a "match copy operation" which duplicates previously written data or data from the...

SUSE CVE-2025-12183

Out-of-bounds memory operations in org.lz4:lz4-java 1.8.0 and earlier allow remote attackers to cause denial of service and read adjacent memory via untrusted compressed input...

lz4-java: lz4-java: Information Disclosure via Insufficient Output Buffer Clearing

A flaw was found in lz4-java. This vulnerability allows disclosure of sensitive data via crafted compressed input due to insufficient clearing of the output buffer in Java-based decompressor implementations...

Important: Red Hat Security Advisory: JBoss EAP XP 5.0 Update 4.0 release. See references for release notes.

JBoss EAP XP 5.0 Update 4.0 release. See references for release notes. JBoss EAP XP 5.0 Update 4.0 GA release. See references for release notes. Security Fixes: vertx-core: static handler component cache can be manipulated to deny the access to static files eapxp-5 CVE-2026-1002 netty-codec:...

K000160213: LZ4 vulnerability CVE-2025-12183

Security Advisory Description Out-of-bounds memory operations in org.lz4:lz4-java 1.8.0 and earlier allow remote attackers to cause denial of service and read adjacent memory via untrusted compressed input. CVE-2025-12183 Impact There is no impact; F5 products are not affected by this...

Security Bulletin: IBM Operations Analytics - Log Analysis is affected by denial of service and a possible information leak due to LZ4 compression

Summary LZ4 compression for Java in Logstash is used by IBM Operations Analytics - Log Analysis as part of the fast, lightweight compression to reduce storage size. CVE-2025-12183, CVE-2025-66566. Vulnerability Details CVEID:CVE-2025-12183 DESCRIPTION: Out-of-bounds memory operations in...