lz4: Fix of CVE-2021-3520

{
  "id": "cd3a0696a7ff527e6890ef3ef0670bb3a2337d3bf5437a4339bb7ca98fa579b0",
  "url": "https://osv.dev/vulnerability/CLSA-2026-1792171196",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "lz4: Fix of CVE-2021-3520",
    "summary": "- CVE-2021-3520: Fix potential memory corruption with negative memmove() size",
    "evidence": "osv:CLSA-2026-1792171196",
    "products": [
      {
        "name": {
          "value": "lz4",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.8.3-1.el7.tuxcare.els1",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "lz4-devel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.8.3-1.el7.tuxcare.els1",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "lz4-static",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.8.3-1.el7.tuxcare.els1",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CLSA-2026-1792171196",
      "aliases": [
        "CLSA-2026-1792171196"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.8.3-1.el7.tuxcare.els1"
                }
              ]
            }
          ],
          "package": {
            "name": "lz4",
            "purl": "pkg:rpm/tuxcare/lz4?distro=rhel-7",
            "ecosystem": "TuxCare:RHEL:7"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/rhel7els/CLSA-2026-1792171196.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.8.3-1.el7.tuxcare.els1"
                }
              ]
            }
          ],
          "package": {
            "name": "lz4-devel",
            "purl": "pkg:rpm/tuxcare/lz4-devel?distro=rhel-7",
            "ecosystem": "TuxCare:RHEL:7"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/rhel7els/CLSA-2026-1792171196.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.8.3-1.el7.tuxcare.els1"
                }
              ]
            }
          ],
          "package": {
            "name": "lz4-static",
            "purl": "pkg:rpm/tuxcare/lz4-static?distro=rhel-7",
            "ecosystem": "TuxCare:RHEL:7"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/rhel7els/CLSA-2026-1792171196.json"
          }
        }
      ],
      "modified": "2026-10-26T09:32:00.767031444Z",
      "provider": "osv",
      "upstream": [
        "CVE-2021-3520"
      ],
      "references": [
        "https://errata.tuxcare.com/els_os/rhel7els/CLSA-2026-1792171196.html",
        "https://nvd.nist.gov/vuln/detail/CVE-2021-3520"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2021-3520",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 449297,
  "published_at": "2026-10-16T17:20:07+00:00"
}