zstd-jni-java — security advisory

{
  "id": "3e478b7daaa6129c443b2ce35afdc1f269974c784fa4ac9cb81ddc7ce6f54665",
  "url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-87823",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "UBUNTU-CVE-2026-87823",
    "summary": "zstd-jni before 1.5.7-14 performs 32-bit signed bounds checks on three direct-ByteBuffer frame-size native methods, allowing out-of-bounds memory reads via negative or overflowing offsets. Attackers can supply negative offset values near Integer.MIN_VALUE to read unmapped memory, causing JVM termination or extracting arbitrary frame size data from unintended memory locations.",
    "evidence": "osv:UBUNTU-CVE-2026-87823",
    "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-3build1",
            "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-8",
            "evidence": "/affected/1/versions"
          }
        ]
      },
      {
        "name": {
          "value": "zstd-jni-java",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "1.5.2-5+ds-7",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "1.5.2-5+ds-7build1",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "1.5.2-5+ds-7ubuntu1",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "1.5.2-5+ds-8",
            "evidence": "/affected/2/versions"
          }
        ]
      }
    ],
    "severity": "high",
    "structured": {
      "id": "UBUNTU-CVE-2026-87823",
      "aliases": [
        "UBUNTU-CVE-2026-87823"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H"
        },
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N"
        },
        {
          "type": "Ubuntu",
          "score": "medium"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "zstd-jni-java",
            "purl": "pkg:deb/ubuntu/zstd-jni-java?arch=source&distro=noble",
            "ecosystem": "Ubuntu:24.04:LTS"
          },
          "versions": [
            "1.5.2-5+ds-3",
            "1.5.2-5+ds-3build1"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-87823.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "libzstd-jni-java",
                "binary_version": "1.5.2-5+ds-3build1"
              },
              {
                "binary_name": "libzstd-jni1",
                "binary_version": "1.5.2-5+ds-3build1"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "zstd-jni-java",
            "purl": "pkg:deb/ubuntu/zstd-jni-java?arch=source&distro=stonking",
            "ecosystem": "Ubuntu:26.10"
          },
          "versions": [
            "1.5.2-5+ds-8"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-87823.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "libzstd-jni-java",
                "binary_version": "1.5.2-5+ds-8"
              },
              {
                "binary_name": "libzstd-jni1",
                "binary_version": "1.5.2-5+ds-8"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "zstd-jni-java",
            "purl": "pkg:deb/ubuntu/zstd-jni-java?arch=source&distro=resolute",
            "ecosystem": "Ubuntu:26.04:LTS"
          },
          "versions": [
            "1.5.2-5+ds-7",
            "1.5.2-5+ds-7build1",
            "1.5.2-5+ds-7ubuntu1",
            "1.5.2-5+ds-8"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-87823.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "libzstd-jni-java",
                "binary_version": "1.5.2-5+ds-8"
              },
              {
                "binary_name": "libzstd-jni1",
                "binary_version": "1.5.2-5+ds-8"
              }
            ]
          }
        }
      ],
      "modified": "2026-10-17T13:01:14.983764772Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-87823"
      ],
      "references": [
        "https://ubuntu.com/security/CVE-2026-87823",
        "https://www.cve.org/CVERecord?id=CVE-2026-87823",
        "https://github.com/luben/zstd-jni/security/advisories/GHSA-jfr6-9xqw-2g2q"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-87823",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/1/score"
  },
  "source_id": "core-osv",
  "document_id": 361367,
  "published_at": "2026-09-09T15:17:00+00:00"
}