{"id":"UBUNTU-CVE-2026-59949","details":"yawkat LZ4 Java provides LZ4 compression for Java. Prior to 1.11.1, JNI-backed XXHash implementations fail to validate the byte array object and the off and len arguments in XXHashFactory.nativeInstance().hash32().hash(), XXHashFactory.nativeInstance().hash64().hash(), XXHashFactory.nativeInstance().newStreamingHash32().update(), and XXHashFactory.nativeInstance().newStreamingHash64().update(), allowing null arrays or oversized ranges to reach native code, read outside the Java array, and fatally terminate the JVM. This issue is fixed in version 1.11.1.","modified":"2026-09-24T02:00:35.550463281Z","published":"2026-08-18T15:16:00Z","upstream":["CVE-2026-59949"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-59949"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-59949"},{"type":"REPORT","url":"https://github.com/yawkat/lz4-java/security/advisories/GHSA-xx22-p4ch-683r"}],"affected":[{"package":{"name":"lz4-java","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/lz4-java?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.5.1-2"],"ecosystem_specific":{"binaries":[{"binary_version":"1.5.1-2","binary_name":"liblz4-java"},{"binary_name":"liblz4-jni","binary_version":"1.5.1-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-59949.json"}},{"package":{"name":"lz4-java","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/lz4-java?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.5.1-3build1"],"ecosystem_specific":{"binaries":[{"binary_name":"liblz4-java","binary_version":"1.5.1-3build1"},{"binary_version":"1.5.1-3build1","binary_name":"liblz4-jni"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-59949.json"}},{"package":{"name":"lz4-java","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/lz4-java?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.8.0-3","1.8.0-4","1.8.0-4build1"],"ecosystem_specific":{"binaries":[{"binary_name":"liblz4-java","binary_version":"1.8.0-4build1"},{"binary_version":"1.8.0-4build1","binary_name":"liblz4-jni"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-59949.json"}},{"package":{"name":"lz4-java","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/lz4-java?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.8.0-4build1","1.8.0-4build2"],"ecosystem_specific":{"binaries":[{"binary_version":"1.8.0-4build2","binary_name":"liblz4-java"},{"binary_name":"liblz4-jni","binary_version":"1.8.0-4build2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-59949.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}