Fix CVE(s): CVE-2020-18771, CVE-2026-25884, CVE-2026-27596

{
  "id": "31d56549cad1c4e1f7c343a4bfd6019cbff3df4d0c1905cdec2c2a276ba6e813",
  "url": "https://osv.dev/vulnerability/CLSA-2026-1787932207",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Fix CVE(s): CVE-2020-18771, CVE-2026-25884, CVE-2026-27596",
    "summary": "* SECURITY UPDATE: out-of-bounds read in the Nikon MakerNote printer - debian/patches/CVE-2020-18771.patch: bound the nikonFocusarea[] index in Nikon1MakerNote::print0x0088() with EXV_COUNTOF(), so a crafted MakerNote cannot make the printer read a pointer from past the end of the table (upstream 5e6c2855ce, via Debian DLA-3265-1). - CVE-2020-18771 * SECURITY UPDATE: out-of-bounds read in the native preview loader - debian/patches/CVE-2026-27596.patch: require sizeData >= 28 in LoaderNative::getData() before subtracting 28, so a Photoshop preview IRB declaring a shorter payload cannot wrap the length to nearly 4 GB (upstream 2cb728a850). - CVE-2026-27596",
    "evidence": "osv:CLSA-2026-1787932207",
    "products": [
      {
        "name": {
          "value": "exiv2",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "0.25-3.1ubuntu0.18.04.11+tuxcare.els2",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "libexiv2-14",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "0.25-3.1ubuntu0.18.04.11+tuxcare.els2",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "libexiv2-dev",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "0.25-3.1ubuntu0.18.04.11+tuxcare.els2",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "libexiv2-doc",
          "evidence": "/affected/3/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "0.25-3.1ubuntu0.18.04.11+tuxcare.els2",
            "evidence": "/affected/3/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CLSA-2026-1787932207",
      "aliases": [
        "CLSA-2026-1787932207"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "0.25-3.1ubuntu0.18.04.11+tuxcare.els2"
                }
              ]
            }
          ],
          "package": {
            "name": "exiv2",
            "purl": "pkg:deb/tuxcare/exiv2?distro=ubuntu-18.04",
            "ecosystem": "TuxCare:Ubuntu:18.04"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1787932207.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "0.25-3.1ubuntu0.18.04.11+tuxcare.els2"
                }
              ]
            }
          ],
          "package": {
            "name": "libexiv2-14",
            "purl": "pkg:deb/tuxcare/libexiv2-14?distro=ubuntu-18.04",
            "ecosystem": "TuxCare:Ubuntu:18.04"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1787932207.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "0.25-3.1ubuntu0.18.04.11+tuxcare.els2"
                }
              ]
            }
          ],
          "package": {
            "name": "libexiv2-dev",
            "purl": "pkg:deb/tuxcare/libexiv2-dev?distro=ubuntu-18.04",
            "ecosystem": "TuxCare:Ubuntu:18.04"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1787932207.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "0.25-3.1ubuntu0.18.04.11+tuxcare.els2"
                }
              ]
            }
          ],
          "package": {
            "name": "libexiv2-doc",
            "purl": "pkg:deb/tuxcare/libexiv2-doc?distro=ubuntu-18.04",
            "ecosystem": "TuxCare:Ubuntu:18.04"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1787932207.json"
          }
        }
      ],
      "modified": "2026-10-26T09:32:03.727514590Z",
      "provider": "osv",
      "upstream": [
        "CVE-2020-18771",
        "CVE-2026-25884",
        "CVE-2026-27596"
      ],
      "references": [
        "https://errata.tuxcare.com/els_os/ubuntu18.04els/CLSA-2026-1787932207.html",
        "https://nvd.nist.gov/vuln/detail/CVE-2020-18771",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-25884",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-27596"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2020-18771",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-25884",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-27596",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 449545,
  "published_at": "2026-09-01T10:59:33+00:00"
}