Fix CVE(s): CVE-2026-54874

{
  "id": "bcc7278a96e41a680a4fa4879b344a8bc353634bf89111c0f4af4723b4e5d2c7",
  "url": "https://osv.dev/vulnerability/CLSA-2026-1788951485",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Fix CVE(s): CVE-2026-54874",
    "summary": "* SECURITY UPDATE: Unbounded memory retention in the DTLS record layer. dtls1_buffer_record() adopted the entire live read buffer for every queued record and allocated a fresh one, so a peer could pin roughly 17.7 KB of heap per queued record regardless of how small the record actually was, up to the 100-entry queue limit, exhausting memory on the endpoint. - debian/patches/CVE-2026-54874.patch: copy only the received record into a right-sized allocation and restore it on retrieval, leaving the live read buffer in place, in ssl/d1_pkt.c, ssl/d1_lib.c and ssl/dtls1.h. - CVE-2026-54874",
    "evidence": "osv:CLSA-2026-1788951485",
    "products": [
      {
        "name": {
          "value": "libssl-dev",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.0.2g-1ubuntu4.21+tuxcare.els17",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "libssl-doc",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.0.2g-1ubuntu4.21+tuxcare.els17",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "libssl1.0.0",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.0.2g-1ubuntu4.21+tuxcare.els17",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "openssl",
          "evidence": "/affected/3/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.0.2g-1ubuntu4.21+tuxcare.els17",
            "evidence": "/affected/3/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CLSA-2026-1788951485",
      "aliases": [
        "CLSA-2026-1788951485"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.0.2g-1ubuntu4.21+tuxcare.els17"
                }
              ]
            }
          ],
          "package": {
            "name": "libssl-dev",
            "purl": "pkg:deb/tuxcare/libssl-dev?distro=ubuntu-16.04",
            "ecosystem": "TuxCare:Ubuntu:16.04"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu16.04els/CLSA-2026-1788951485.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.0.2g-1ubuntu4.21+tuxcare.els17"
                }
              ]
            }
          ],
          "package": {
            "name": "libssl-doc",
            "purl": "pkg:deb/tuxcare/libssl-doc?distro=ubuntu-16.04",
            "ecosystem": "TuxCare:Ubuntu:16.04"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu16.04els/CLSA-2026-1788951485.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.0.2g-1ubuntu4.21+tuxcare.els17"
                }
              ]
            }
          ],
          "package": {
            "name": "libssl1.0.0",
            "purl": "pkg:deb/tuxcare/libssl1.0.0?distro=ubuntu-16.04",
            "ecosystem": "TuxCare:Ubuntu:16.04"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu16.04els/CLSA-2026-1788951485.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.0.2g-1ubuntu4.21+tuxcare.els17"
                }
              ]
            }
          ],
          "package": {
            "name": "openssl",
            "purl": "pkg:deb/tuxcare/openssl?distro=ubuntu-16.04",
            "ecosystem": "TuxCare:Ubuntu:16.04"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu16.04els/CLSA-2026-1788951485.json"
          }
        }
      ],
      "modified": "2026-10-26T09:32:02.239043745Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-54874"
      ],
      "references": [
        "https://errata.tuxcare.com/els_os/ubuntu16.04els/CLSA-2026-1788951485.html",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-54874"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-54874",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 449442,
  "published_at": "2026-09-09T10:58:16+00:00"
}