Fix CVE(s): CVE-2026-58050

{
  "id": "7c43bf8f33c243566cc7e6b8c7e1c97d6da9c15d0bdeeb5967de9bfa96d914ac",
  "url": "https://osv.dev/vulnerability/CLSA-2026-1784069784",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Fix CVE(s): CVE-2026-58050",
    "summary": "* SECURITY UPDATE: potential multiplication overflow in the publickey subsystem leading to a heap buffer overflow on 32-bit platforms - debian/patches/CVE-2026-58050.patch: cap the publickey attribute count at 1024, and zero-initialise the freshly (re)allocated list entry before parsing to avoid a free of uninitialised memory on the new bounds-check error path, in libssh2_publickey_list_fetch() in src/publickey.c - CVE-2026-58050",
    "evidence": "osv:CLSA-2026-1784069784",
    "products": [
      {
        "name": {
          "value": "libssh2-1",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.8.0-2.1+deb10u1+tuxcare.els2",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "libssh2-1-dev",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.8.0-2.1+deb10u1+tuxcare.els2",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CLSA-2026-1784069784",
      "aliases": [
        "CLSA-2026-1784069784"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.8.0-2.1+deb10u1+tuxcare.els2"
                }
              ]
            }
          ],
          "package": {
            "name": "libssh2-1",
            "purl": "pkg:deb/tuxcare/libssh2-1?distro=debian-10",
            "ecosystem": "TuxCare:Debian:10"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1784069784.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.8.0-2.1+deb10u1+tuxcare.els2"
                }
              ]
            }
          ],
          "package": {
            "name": "libssh2-1-dev",
            "purl": "pkg:deb/tuxcare/libssh2-1-dev?distro=debian-10",
            "ecosystem": "TuxCare:Debian:10"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1784069784.json"
          }
        }
      ],
      "modified": "2026-10-26T09:31:52.468822998Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-58050"
      ],
      "references": [
        "https://errata.tuxcare.com/els_os/debian10els/CLSA-2026-1784069784.html",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-58050"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-58050",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 448782,
  "published_at": "2026-07-14T22:56:36+00:00"
}