HighFix available
zstd-jni-java — security advisory
zstd-jni before 1.5.7-14 fails to validate the samples buffer capacity in Zstd.trainFromBufferDirect, allowing attackers to read past buffer boundaries by supplying oversized per-sample lengths. Attackers can trigger out-of-bounds memory access by providing crafted sample length arrays that cause the native implementation to walk past the buffer allocation, resulting in JVM termination.
- Products
- zstd-jni-java
- Affected versions
- 1.5.2-5+ds-3, 1.5.2-5+ds-4, 1.5.2-5+ds-5, 1.5.2-5+ds-6, 1.5.2-5+ds-7, 1.5.2-5+ds-8, 1.5.4-2+ds-1, 1.5.4-2+ds-2, 1.5.4-2+ds-3~exp1, 1.5.4-2+ds-3~exp2, 1.5.4-2+ds-3~exp3, 1.5.4-2+ds-3~exp4, 1.5.7-23+ds-1, 1.5.7-23+ds-2
- Fixed versions
- 1.5.7-23+ds-1
- CVEs
- CVE-2026-87824
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 05:16 UTC · Revision 1
Source evidence
zstd-jni before 1.5.7-14 fails to validate the samples buffer capacity in Zstd.trainFromBufferDirect, allowing attackers to read past buffer boundaries by supplying oversized per-sample lengths. Attackers can trigger out-of-bounds memory access by providing crafted sample length arrays that cause the native implementation to walk past the buffer allocation, resulting in JVM termination.
osv:DEBIAN-CVE-2026-87824
zstd-jni-java
Fixed versions: Not specified
zstd-jni-java
Fixed versions: Not specified
zstd-jni-java
Fixed versions: 1.5.7-23+ds-1
Complete source record
{
"id": "363caad62c55bf16d36d94079f453a3c96a615a069a084224347ad18db95326c",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-87824",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2026-87824",
"summary": "zstd-jni before 1.5.7-14 fails to validate the samples buffer capacity in Zstd.trainFromBufferDirect, allowing attackers to read past buffer boundaries by supplying oversized per-sample lengths. Attackers can trigger out-of-bounds memory access by providing crafted sample length arrays that cause the native implementation to walk past the buffer allocation, resulting in JVM termination.",
"evidence": "osv:DEBIAN-CVE-2026-87824",
"products": [
{
"name": {
"value": "zstd-jni-java",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.5.2-5+ds-3",
"evidence": "/affected/0/versions"
},
{
"value": "1.5.2-5+ds-4",
"evidence": "/affected/0/versions"
},
{
"value": "1.5.2-5+ds-5",
"evidence": "/affected/0/versions"
},
{
"value": "1.5.2-5+ds-6",
"evidence": "/affected/0/versions"
},
{
"value": "1.5.2-5+ds-7",
"evidence": "/affected/0/versions"
},
{
"value": "1.5.2-5+ds-8",
"evidence": "/affected/0/versions"
},
{
"value": "1.5.4-2+ds-1",
"evidence": "/affected/0/versions"
},
{
"value": "1.5.4-2+ds-2",
"evidence": "/affected/0/versions"
},
{
"value": "1.5.4-2+ds-3~exp1",
"evidence": "/affected/0/versions"
},
{
"value": "1.5.4-2+ds-3~exp2",
"evidence": "/affected/0/versions"
},
{
"value": "1.5.4-2+ds-3~exp3",
"evidence": "/affected/0/versions"
},
{
"value": "1.5.4-2+ds-3~exp4",
"evidence": "/affected/0/versions"
},
{
"value": "1.5.7-23+ds-1",
"evidence": "/affected/0/versions"
},
{
"value": "1.5.7-23+ds-2",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "zstd-jni-java",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.5.2-5+ds-7",
"evidence": "/affected/1/versions"
},
{
"value": "1.5.2-5+ds-8",
"evidence": "/affected/1/versions"
},
{
"value": "1.5.4-2+ds-1",
"evidence": "/affected/1/versions"
},
{
"value": "1.5.4-2+ds-2",
"evidence": "/affected/1/versions"
},
{
"value": "1.5.4-2+ds-3~exp1",
"evidence": "/affected/1/versions"
},
{
"value": "1.5.4-2+ds-3~exp2",
"evidence": "/affected/1/versions"
},
{
"value": "1.5.4-2+ds-3~exp3",
"evidence": "/affected/1/versions"
},
{
"value": "1.5.4-2+ds-3~exp4",
"evidence": "/affected/1/versions"
},
{
"value": "1.5.7-23+ds-1",
"evidence": "/affected/1/versions"
},
{
"value": "1.5.7-23+ds-2",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "zstd-jni-java",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.5.7-23+ds-1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": [
{
"value": "1.5.2-5+ds-7",
"evidence": "/affected/2/versions"
},
{
"value": "1.5.2-5+ds-8",
"evidence": "/affected/2/versions"
},
{
"value": "1.5.4-2+ds-1",
"evidence": "/affected/2/versions"
},
{
"value": "1.5.4-2+ds-2",
"evidence": "/affected/2/versions"
},
{
"value": "1.5.4-2+ds-3~exp1",
"evidence": "/affected/2/versions"
},
{
"value": "1.5.4-2+ds-3~exp2",
"evidence": "/affected/2/versions"
},
{
"value": "1.5.4-2+ds-3~exp3",
"evidence": "/affected/2/versions"
},
{
"value": "1.5.4-2+ds-3~exp4",
"evidence": "/affected/2/versions"
}
]
}
],
"severity": "high",
"structured": {
"id": "DEBIAN-CVE-2026-87824",
"aliases": [
"DEBIAN-CVE-2026-87824"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "zstd-jni-java",
"purl": "pkg:deb/debian/zstd-jni-java?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"1.5.2-5+ds-3",
"1.5.2-5+ds-4",
"1.5.2-5+ds-5",
"1.5.2-5+ds-6",
"1.5.2-5+ds-7",
"1.5.2-5+ds-8",
"1.5.4-2+ds-1",
"1.5.4-2+ds-2",
"1.5.4-2+ds-3~exp1",
"1.5.4-2+ds-3~exp2",
"1.5.4-2+ds-3~exp3",
"1.5.4-2+ds-3~exp4",
"1.5.7-23+ds-1",
"1.5.7-23+ds-2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-87824.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "zstd-jni-java",
"purl": "pkg:deb/debian/zstd-jni-java?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"1.5.2-5+ds-7",
"1.5.2-5+ds-8",
"1.5.4-2+ds-1",
"1.5.4-2+ds-2",
"1.5.4-2+ds-3~exp1",
"1.5.4-2+ds-3~exp2",
"1.5.4-2+ds-3~exp3",
"1.5.4-2+ds-3~exp4",
"1.5.7-23+ds-1",
"1.5.7-23+ds-2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-87824.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.5.7-23+ds-1"
}
]
}
],
"package": {
"name": "zstd-jni-java",
"purl": "pkg:deb/debian/zstd-jni-java?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"1.5.2-5+ds-7",
"1.5.2-5+ds-8",
"1.5.4-2+ds-1",
"1.5.4-2+ds-2",
"1.5.4-2+ds-3~exp1",
"1.5.4-2+ds-3~exp2",
"1.5.4-2+ds-3~exp3",
"1.5.4-2+ds-3~exp4"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-87824.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-18T04:00:08.480035126Z",
"provider": "osv",
"upstream": [
"CVE-2026-87824"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2026-87824"
]
},
"related_cves": [
{
"value": "CVE-2026-87824",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 366686,
"published_at": "2026-09-09T15:17:27.753+00:00"
}