{"id":"CVE-2026-59949","summary":"yawkat LZ4 Java: JVM Crash via Null Byte Array in lz4-java Streaming XXHash JNI (StreamingXXHash32JNI / StreamingXXHash64JNI)","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.","aliases":["GHSA-xx22-p4ch-683r"],"modified":"2026-08-19T12:09:54.865286Z","published":"2026-08-18T14:58:08.615Z","related":["CGA-98mx-fpcm-pjhp"],"database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-476"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/59xxx/CVE-2026-59949.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/59xxx/CVE-2026-59949.json"},{"type":"FIX","url":"https://github.com/yawkat/lz4-java/commit/dbd86d04b8dd716e1c2bc626be54189997d910da"},{"type":"WEB","url":"https://github.com/yawkat/lz4-java/releases/tag/v1.11.1"},{"type":"ADVISORY","url":"https://github.com/yawkat/lz4-java/security/advisories/GHSA-xx22-p4ch-683r"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-59949"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/yawkat/lz4-java","events":[{"introduced":"0"},{"fixed":"dbd86d04b8dd716e1c2bc626be54189997d910da"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"1.11.1"}],"source":"AFFECTED_FIELD"}}],"versions":["v1.11.0","v1.10.4","v1.10.3","v1.10.2","v1.10.1","v1.10.0","v1.9.0","1.8.0","1.7.0","1.6.0","1.5.0","1.4.0","1.3.0","1.2.0","1.0.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-59949.json","vanir_signatures_modified":"2026-08-19T12:09:54Z","vanir_signatures":[{"target":{"file":"src/java/net/jpountz/util/ByteBufferUtils.java","function":"checkRange"},"deprecated":false,"digest":{"function_hash":"87843257706011401096458569905835871820","length":186},"id":"CVE-2026-59949-1129579d","signature_type":"Function","signature_version":"v1","source":"https://github.com/yawkat/lz4-java/commit/dbd86d04b8dd716e1c2bc626be54189997d910da"},{"source":"https://github.com/yawkat/lz4-java/commit/dbd86d04b8dd716e1c2bc626be54189997d910da","target":{"file":"src/java/net/jpountz/xxhash/StreamingXXHash32JNI.java"},"deprecated":false,"digest":{"line_hashes":["52188835542880046349564498428341383900","231544699067850669456960279971253721383","211923169787727576754973573920994276601","248335528281680276630405962134683789745","58135466657490218113187723333196980134"],"threshold":0.9},"id":"CVE-2026-59949-2b2f1363","signature_type":"Line","signature_version":"v1"},{"digest":{"line_hashes":["304866370494344815258281362112318671356","48967850846095186398265727146711085655","79078123397949002533772732714079481182"],"threshold":0.9},"id":"CVE-2026-59949-2c669dbb","signature_type":"Line","signature_version":"v1","source":"https://github.com/yawkat/lz4-java/commit/dbd86d04b8dd716e1c2bc626be54189997d910da","target":{"file":"src/test/net/jpountz/xxhash/XXHash32Test.java"},"deprecated":false},{"source":"https://github.com/yawkat/lz4-java/commit/dbd86d04b8dd716e1c2bc626be54189997d910da","target":{"file":"src/java/net/jpountz/xxhash/StreamingXXHash32JNI.java","function":"update"},"deprecated":false,"digest":{"function_hash":"13203808162700955036236089460995485873","length":134},"id":"CVE-2026-59949-30fa12ea","signature_type":"Function","signature_version":"v1"},{"source":"https://github.com/yawkat/lz4-java/commit/dbd86d04b8dd716e1c2bc626be54189997d910da","target":{"file":"src/java/net/jpountz/xxhash/StreamingXXHash64JNI.java","function":"update"},"deprecated":false,"digest":{"function_hash":"13203808162700955036236089460995485873","length":134},"id":"CVE-2026-59949-31d7abaa","signature_type":"Function","signature_version":"v1"},{"source":"https://github.com/yawkat/lz4-java/commit/dbd86d04b8dd716e1c2bc626be54189997d910da","target":{"file":"src/java/net/jpountz/util/SafeUtils.java"},"deprecated":false,"digest":{"line_hashes":["330721143305649467929160725287579675753","245601943460646559390961719658861209744","212945544987374421026670160724363624371","282959105590060588892199145719928852430","78342574431166125939055639073196142437","23206709006835660294362930811171017006"],"threshold":0.9},"id":"CVE-2026-59949-7c63dbd8","signature_type":"Line","signature_version":"v1"},{"signature_type":"Line","signature_version":"v1","source":"https://github.com/yawkat/lz4-java/commit/dbd86d04b8dd716e1c2bc626be54189997d910da","target":{"file":"src/java/net/jpountz/xxhash/StreamingXXHash64JNI.java"},"deprecated":false,"digest":{"line_hashes":["284916952506509858234350686753295167330","231544699067850669456960279971253721383","140865726203693627259463320235966644227","204325672512978603042963892560761035410","207300228846805057126989287645128173263"],"threshold":0.9},"id":"CVE-2026-59949-9773ed58"},{"deprecated":false,"digest":{"length":174,"function_hash":"26163761408691431529134690922712383932"},"id":"CVE-2026-59949-a386831f","signature_type":"Function","signature_version":"v1","source":"https://github.com/yawkat/lz4-java/commit/dbd86d04b8dd716e1c2bc626be54189997d910da","target":{"function":"checkRange","file":"src/java/net/jpountz/util/SafeUtils.java"}},{"target":{"file":"src/java/net/jpountz/util/ByteBufferUtils.java"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