{
  "document": {
    "category": "csaf_vex",
    "csaf_version": "2.0",
    "distribution": {
      "text": "TuxCare License Agreement",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Cloud Linux Inc. and provide a link to the original.",
        "title": "Terms of Use"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "https://tuxcare.com/contact/",
      "name": "TuxCare",
      "namespace": "https://tuxcare.com/"
    },
    "references": [
      {
        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.tuxcare.com/csaf/v2/els_alt_common/debian10/vex/2026/cve-2026-42765-els_alt_common-debian10.json"
      }
    ],
    "tracking": {
      "current_release_date": "2026-06-16T16:03:26Z",
      "generator": {
        "date": "2026-06-16T16:03:26Z",
        "engine": {
          "name": "pyCSAF"
        }
      },
      "id": "CVE-2026-42765-ELS_ALT_COMMON-DEBIAN10",
      "initial_release_date": "2026-06-09T17:17:00Z",
      "revision_history": [
        {
          "date": "2026-06-09T17:17:00Z",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2026-06-16T16:03:26Z",
          "number": "2",
          "summary": "Official Publication"
        }
      ],
      "status": "final",
      "version": "2"
    },
    "title": "Security update on CVE-2026-42765"
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_name",
                "name": "Debian 10",
                "product": {
                  "name": "Debian 10",
                  "product_id": "Debian-10",
                  "product_identification_helper": {
                    "cpe": "cpe:2.3:o:debian:debian_linux:10:*:*:*:*:*:*:*"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "Debian"
          }
        ],
        "category": "vendor",
        "name": "Software in the Public Interest, Inc."
      },
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "alt-openssl-libs-0:1.1.1w-3.4.amd64",
                "product": {
                  "name": "alt-openssl-libs-0:1.1.1w-3.4.amd64",
                  "product_id": "alt-openssl-libs-0:1.1.1w-3.4.amd64",
                  "product_identification_helper": {
                    "purl": "pkg:deb/tuxcare/alt-openssl-libs@1.1.1w-3.4?arch=amd64&os_name=debian&os_version=10"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "alt-openssl-libs-0:1.1.1w-3.1.amd64",
                "product": {
                  "name": "alt-openssl-libs-0:1.1.1w-3.1.amd64",
                  "product_id": "alt-openssl-libs-0:1.1.1w-3.1.amd64",
                  "product_identification_helper": {
                    "purl": "pkg:deb/tuxcare/alt-openssl-libs@1.1.1w-3.1?arch=amd64&os_name=debian&os_version=10"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "alt-openssl-libs-0:1.1.1w-3.2.amd64",
                "product": {
                  "name": "alt-openssl-libs-0:1.1.1w-3.2.amd64",
                  "product_id": "alt-openssl-libs-0:1.1.1w-3.2.amd64",
                  "product_identification_helper": {
                    "purl": "pkg:deb/tuxcare/alt-openssl-libs@1.1.1w-3.2?arch=amd64&os_name=debian&os_version=10"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "alt-openssl-dev-0:1.1.1w-3.2.amd64",
                "product": {
                  "name": "alt-openssl-dev-0:1.1.1w-3.2.amd64",
                  "product_id": "alt-openssl-dev-0:1.1.1w-3.2.amd64",
                  "product_identification_helper": {
                    "purl": "pkg:deb/tuxcare/alt-openssl-dev@1.1.1w-3.2?arch=amd64&os_name=debian&os_version=10"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "alt-openssl-dev-0:1.1.1w-3.4.amd64",
                "product": {
                  "name": "alt-openssl-dev-0:1.1.1w-3.4.amd64",
                  "product_id": "alt-openssl-dev-0:1.1.1w-3.4.amd64",
                  "product_identification_helper": {
                    "purl": "pkg:deb/tuxcare/alt-openssl-dev@1.1.1w-3.4?arch=amd64&os_name=debian&os_version=10"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "alt-openssl-dev-0:1.1.1w-3.1.amd64",
                "product": {
                  "name": "alt-openssl-dev-0:1.1.1w-3.1.amd64",
                  "product_id": "alt-openssl-dev-0:1.1.1w-3.1.amd64",
                  "product_identification_helper": {
                    "purl": "pkg:deb/tuxcare/alt-openssl-dev@1.1.1w-3.1?arch=amd64&os_name=debian&os_version=10"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "alt-openssl-0:1.1.1w-3.2.amd64",
                "product": {
                  "name": "alt-openssl-0:1.1.1w-3.2.amd64",
                  "product_id": "alt-openssl-0:1.1.1w-3.2.amd64",
                  "product_identification_helper": {
                    "purl": "pkg:deb/tuxcare/alt-openssl@1.1.1w-3.2?arch=amd64&os_name=debian&os_version=10"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "alt-openssl-0:1.1.1w-3.1.amd64",
                "product": {
                  "name": "alt-openssl-0:1.1.1w-3.1.amd64",
                  "product_id": "alt-openssl-0:1.1.1w-3.1.amd64",
                  "product_identification_helper": {
                    "purl": "pkg:deb/tuxcare/alt-openssl@1.1.1w-3.1?arch=amd64&os_name=debian&os_version=10"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "alt-openssl-0:1.1.1w-3.4.amd64",
                "product": {
                  "name": "alt-openssl-0:1.1.1w-3.4.amd64",
                  "product_id": "alt-openssl-0:1.1.1w-3.4.amd64",
                  "product_identification_helper": {
                    "purl": "pkg:deb/tuxcare/alt-openssl@1.1.1w-3.4?arch=amd64&os_name=debian&os_version=10"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "amd64"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "alt-openssl-doc-0:1.1.1w-3.1.all",
                "product": {
                  "name": "alt-openssl-doc-0:1.1.1w-3.1.all",
                  "product_id": "alt-openssl-doc-0:1.1.1w-3.1.all",
                  "product_identification_helper": {
                    "purl": "pkg:deb/tuxcare/alt-openssl-doc@1.1.1w-3.1?arch=all&os_name=debian&os_version=10"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "alt-openssl-doc-0:1.1.1w-3.2.all",
                "product": {
                  "name": "alt-openssl-doc-0:1.1.1w-3.2.all",
                  "product_id": "alt-openssl-doc-0:1.1.1w-3.2.all",
                  "product_identification_helper": {
                    "purl": "pkg:deb/tuxcare/alt-openssl-doc@1.1.1w-3.2?arch=all&os_name=debian&os_version=10"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "alt-openssl-doc-0:1.1.1w-3.4.all",
                "product": {
                  "name": "alt-openssl-doc-0:1.1.1w-3.4.all",
                  "product_id": "alt-openssl-doc-0:1.1.1w-3.4.all",
                  "product_identification_helper": {
                    "purl": "pkg:deb/tuxcare/alt-openssl-doc@1.1.1w-3.4?arch=all&os_name=debian&os_version=10"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "all"
          }
        ],
        "category": "vendor",
        "name": "TuxCare"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "alt-openssl-libs-0:1.1.1w-3.4.amd64 as a component of Debian 10",
          "product_id": "Debian-10:alt-openssl-libs-0:1.1.1w-3.4.amd64"
        },
        "product_reference": "alt-openssl-libs-0:1.1.1w-3.4.amd64",
        "relates_to_product_reference": "Debian-10"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "alt-openssl-libs-0:1.1.1w-3.1.amd64 as a component of Debian 10",
          "product_id": "Debian-10:alt-openssl-libs-0:1.1.1w-3.1.amd64"
        },
        "product_reference": "alt-openssl-libs-0:1.1.1w-3.1.amd64",
        "relates_to_product_reference": "Debian-10"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "alt-openssl-libs-0:1.1.1w-3.2.amd64 as a component of Debian 10",
          "product_id": "Debian-10:alt-openssl-libs-0:1.1.1w-3.2.amd64"
        },
        "product_reference": "alt-openssl-libs-0:1.1.1w-3.2.amd64",
        "relates_to_product_reference": "Debian-10"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "alt-openssl-dev-0:1.1.1w-3.2.amd64 as a component of Debian 10",
          "product_id": "Debian-10:alt-openssl-dev-0:1.1.1w-3.2.amd64"
        },
        "product_reference": "alt-openssl-dev-0:1.1.1w-3.2.amd64",
        "relates_to_product_reference": "Debian-10"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "alt-openssl-dev-0:1.1.1w-3.4.amd64 as a component of Debian 10",
          "product_id": "Debian-10:alt-openssl-dev-0:1.1.1w-3.4.amd64"
        },
        "product_reference": "alt-openssl-dev-0:1.1.1w-3.4.amd64",
        "relates_to_product_reference": "Debian-10"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "alt-openssl-dev-0:1.1.1w-3.1.amd64 as a component of Debian 10",
          "product_id": "Debian-10:alt-openssl-dev-0:1.1.1w-3.1.amd64"
        },
        "product_reference": "alt-openssl-dev-0:1.1.1w-3.1.amd64",
        "relates_to_product_reference": "Debian-10"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "alt-openssl-doc-0:1.1.1w-3.1.all as a component of Debian 10",
          "product_id": "Debian-10:alt-openssl-doc-0:1.1.1w-3.1.all"
        },
        "product_reference": "alt-openssl-doc-0:1.1.1w-3.1.all",
        "relates_to_product_reference": "Debian-10"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "alt-openssl-doc-0:1.1.1w-3.2.all as a component of Debian 10",
          "product_id": "Debian-10:alt-openssl-doc-0:1.1.1w-3.2.all"
        },
        "product_reference": "alt-openssl-doc-0:1.1.1w-3.2.all",
        "relates_to_product_reference": "Debian-10"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "alt-openssl-doc-0:1.1.1w-3.4.all as a component of Debian 10",
          "product_id": "Debian-10:alt-openssl-doc-0:1.1.1w-3.4.all"
        },
        "product_reference": "alt-openssl-doc-0:1.1.1w-3.4.all",
        "relates_to_product_reference": "Debian-10"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "alt-openssl-0:1.1.1w-3.2.amd64 as a component of Debian 10",
          "product_id": "Debian-10:alt-openssl-0:1.1.1w-3.2.amd64"
        },
        "product_reference": "alt-openssl-0:1.1.1w-3.2.amd64",
        "relates_to_product_reference": "Debian-10"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "alt-openssl-0:1.1.1w-3.1.amd64 as a component of Debian 10",
          "product_id": "Debian-10:alt-openssl-0:1.1.1w-3.1.amd64"
        },
        "product_reference": "alt-openssl-0:1.1.1w-3.1.amd64",
        "relates_to_product_reference": "Debian-10"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "alt-openssl-0:1.1.1w-3.4.amd64 as a component of Debian 10",
          "product_id": "Debian-10:alt-openssl-0:1.1.1w-3.4.amd64"
        },
        "product_reference": "alt-openssl-0:1.1.1w-3.4.amd64",
        "relates_to_product_reference": "Debian-10"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-42765",
      "cwe": {
        "id": "CWE-476",
        "name": "NULL Pointer Dereference"
      },
      "notes": [
        {
          "category": "description",
          "text": "Issue summary: When a partial-chain certificate verification is enabled\ntogether with OCSP response checking for the whole chain, a NULL dereference\nwill happen if the verified chain does not have a self-signed trusted anchor,\ncrashing the process.\n\nImpact summary: A NULL pointer dereference can trigger a crash which leads to a\nDenial of Service for an application.\n\nWhen performing OCSP response checking for certificates in the verification\nchain, the code always tries to access the next certificate as the issuer.\nThere is a check for a self-signed certificate. However with the partial\nchain verification enabled when the chain does not have a self-signed trusted\nanchor, the issuer will be NULL for the last certificate in the chain. A NULL\npointer dereference then happens.\n\nThis issue affects only applications which enable both OCSP verification\nof the certificate chain (X509_V_FLAG_OCSP_RESP_CHECK_ALL) and partial\nchain verification (X509_V_FLAG_PARTIAL_CHAIN) in the certificate\nverification. Both flags are disabled by default. For that reason, we have\nassigned Low severity to the issue.\n\nNo FIPS modules are affected by this issue as the affected code is outside\nthe OpenSSL FIPS module boundary.",
          "title": "Vulnerability description"
        }
      ],
      "product_status": {
        "under_investigation": [
          "Debian-10:alt-openssl-0:1.1.1w-3.1.amd64",
          "Debian-10:alt-openssl-0:1.1.1w-3.2.amd64",
          "Debian-10:alt-openssl-0:1.1.1w-3.4.amd64",
          "Debian-10:alt-openssl-dev-0:1.1.1w-3.1.amd64",
          "Debian-10:alt-openssl-dev-0:1.1.1w-3.2.amd64",
          "Debian-10:alt-openssl-dev-0:1.1.1w-3.4.amd64",
          "Debian-10:alt-openssl-doc-0:1.1.1w-3.1.all",
          "Debian-10:alt-openssl-doc-0:1.1.1w-3.2.all",
          "Debian-10:alt-openssl-doc-0:1.1.1w-3.4.all",
          "Debian-10:alt-openssl-libs-0:1.1.1w-3.1.amd64",
          "Debian-10:alt-openssl-libs-0:1.1.1w-3.2.amd64",
          "Debian-10:alt-openssl-libs-0:1.1.1w-3.4.amd64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els-lang/cve/CVE-2026-42765"
        },
        {
          "category": "external",
          "summary": "https://github.com/openssl/openssl/commit/14340b7fa1d444615486bc137014b064e64ec334",
          "url": "https://github.com/openssl/openssl/commit/14340b7fa1d444615486bc137014b064e64ec334"
        },
        {
          "category": "external",
          "summary": "https://github.com/openssl/openssl/commit/eb345da18ce2216b2f3ade9c2bc23e068487fa97",
          "url": "https://github.com/openssl/openssl/commit/eb345da18ce2216b2f3ade9c2bc23e068487fa97"
        },
        {
          "category": "external",
          "summary": "https://openssl-library.org/news/secadv/20260609.txt",
          "url": "https://openssl-library.org/news/secadv/20260609.txt"
        }
      ],
      "release_date": "2026-06-09T17:17:00Z",
      "remediations": [
        {
          "category": "none_available",
          "date": "2026-06-16T12:48:03.413178Z",
          "details": "Affected",
          "product_ids": [
            "Debian-10:alt-openssl-0:1.1.1w-3.1.amd64",
            "Debian-10:alt-openssl-0:1.1.1w-3.2.amd64",
            "Debian-10:alt-openssl-0:1.1.1w-3.4.amd64",
            "Debian-10:alt-openssl-dev-0:1.1.1w-3.1.amd64",
            "Debian-10:alt-openssl-dev-0:1.1.1w-3.2.amd64",
            "Debian-10:alt-openssl-dev-0:1.1.1w-3.4.amd64",
            "Debian-10:alt-openssl-doc-0:1.1.1w-3.1.all",
            "Debian-10:alt-openssl-doc-0:1.1.1w-3.2.all",
            "Debian-10:alt-openssl-doc-0:1.1.1w-3.4.all",
            "Debian-10:alt-openssl-libs-0:1.1.1w-3.1.amd64",
            "Debian-10:alt-openssl-libs-0:1.1.1w-3.2.amd64",
            "Debian-10:alt-openssl-libs-0:1.1.1w-3.4.amd64"
          ]
        }
      ]
    }
  ]
}