gnutls: Fix of 8 CVEs

{
  "id": "79bc9fcaa769803ccb8c013d8344e46de48b0bc70e3f073a83b0786a821fc596",
  "url": "https://osv.dev/vulnerability/CLSA-2026-1780484200",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "gnutls: Fix of 8 CVEs",
    "summary": "- CVE-2026-33846: fix heap buffer overflow in DTLS handshake fragment reassembly by validating message-length consistency and bounding the fragment write against the destination buffer capacity - CVE-2026-42009: fix undefined behaviour in DTLS packet ordering by making the handshake_compare qsort comparator return 0 for equal sequence numbers - CVE-2026-42011: fix name constraints bypass by no longer short-circuiting the intersection of an empty permitted set, so later permitted constraints are still enforced - CVE-2026-42012: fix certificate verification bypass by making URI and SRV subjectAltName entries preclude the legacy CN fallback hostname check - CVE-2026-42013: fix certificate verification bypass by preventing CN and DN-email fallback when a subjectAltName entry is oversized - CVE-2026-5260: fix heap overread in RSA key exchange by rejecting a ciphertext whose size does not match the RSA modulus - CVE-2026-42014: fix use-after-free and leak in gnutls_pkcs11_token_set_pin when changing the security officer PIN - CVE-2026-42015: fix off-by-one out-of-bounds write when appending an element to a PKCS#12 bag that already holds the maximum number of elements",
    "evidence": "osv:CLSA-2026-1780484200",
    "products": [
      {
        "name": {
          "value": "gnutls",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "3.8.3-9.el9_6.tuxcare.1.els6",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "gnutls-c++",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "3.8.3-9.el9_6.tuxcare.1.els6",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "gnutls-dane",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "3.8.3-9.el9_6.tuxcare.1.els6",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "gnutls-devel",
          "evidence": "/affected/3/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "3.8.3-9.el9_6.tuxcare.1.els6",
            "evidence": "/affected/3/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "gnutls-utils",
          "evidence": "/affected/4/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "3.8.3-9.el9_6.tuxcare.1.els6",
            "evidence": "/affected/4/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CLSA-2026-1780484200",
      "aliases": [
        "CLSA-2026-1780484200"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "3.8.3-9.el9_6.tuxcare.1.els6"
                }
              ]
            }
          ],
          "package": {
            "name": "gnutls",
            "purl": "pkg:rpm/tuxcare/gnutls?distro=almalinux-9.6",
            "ecosystem": "TuxCare:AlmaLinux:9.6"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.6esu/CLSA-2026-1780484200.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "3.8.3-9.el9_6.tuxcare.1.els6"
                }
              ]
            }
          ],
          "package": {
            "name": "gnutls-c++",
            "purl": "pkg:rpm/tuxcare/gnutls-c++?distro=almalinux-9.6",
            "ecosystem": "TuxCare:AlmaLinux:9.6"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.6esu/CLSA-2026-1780484200.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "3.8.3-9.el9_6.tuxcare.1.els6"
                }
              ]
            }
          ],
          "package": {
            "name": "gnutls-dane",
            "purl": "pkg:rpm/tuxcare/gnutls-dane?distro=almalinux-9.6",
            "ecosystem": "TuxCare:AlmaLinux:9.6"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.6esu/CLSA-2026-1780484200.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "3.8.3-9.el9_6.tuxcare.1.els6"
                }
              ]
            }
          ],
          "package": {
            "name": "gnutls-devel",
            "purl": "pkg:rpm/tuxcare/gnutls-devel?distro=almalinux-9.6",
            "ecosystem": "TuxCare:AlmaLinux:9.6"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.6esu/CLSA-2026-1780484200.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "3.8.3-9.el9_6.tuxcare.1.els6"
                }
              ]
            }
          ],
          "package": {
            "name": "gnutls-utils",
            "purl": "pkg:rpm/tuxcare/gnutls-utils?distro=almalinux-9.6",
            "ecosystem": "TuxCare:AlmaLinux:9.6"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.6esu/CLSA-2026-1780484200.json"
          }
        }
      ],
      "modified": "2026-10-26T09:43:53.907767421Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-33846",
        "CVE-2026-42009",
        "CVE-2026-42011",
        "CVE-2026-42012",
        "CVE-2026-42013",
        "CVE-2026-42014",
        "CVE-2026-42015",
        "CVE-2026-5260"
      ],
      "references": [
        "https://errata.tuxcare.com/els_os/tuxcare9.6esu/CLSA-2026-1780484200.html",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-33846",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-42009",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-42011",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-42012",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-42013",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-42014",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-42015",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-5260"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-33846",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-42009",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-42011",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-42012",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-42013",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-42014",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-42015",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-5260",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 450227,
  "published_at": "2026-06-03T10:57:05+00:00"
}