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gnutls: Fix of 8 CVEs

Type: advisorySources: OSV

- CVE-2026-33846: DTLS handshake reassembly add more checks (buffers.c) - CVE-2026-42009: DTLS reorder qsort with duplicate sequence numbers - CVE-2026-42011: X.509 name constraints intersection of empty constraints - CVE-2026-42012: URI/SRV SAN preclude CN fallback - CVE-2026-42013: prevent fallback on oversized SAN - CVE-2026-42014: PKCS#11 token set_pin UAF + leak - CVE-2026-5260: PKCS#11 RSA short-ciphertext overread; ciphertext must match modulus size - CVE-2026-42015: PKCS#12 bag-element off-by-one bound check

Products
gnutls, gnutls-c++, gnutls-dane, gnutls-devel, gnutls-utils
Affected versions
Not specified
Fixed versions
3.6.16-4.el8.tuxcare.els12
CVEs
CVE-2026-33846, CVE-2026-42009, CVE-2026-42011, CVE-2026-42012, CVE-2026-42013, CVE-2026-42014, CVE-2026-42015, CVE-2026-5260
Confirmed fixed CVEs
Not specified
Updated in this feed
1 Nov 2026, 11:56 UTC · Revision 1

Source evidence

gnutls: Fix of 8 CVEs

core-osv · Original source

Published 29 May 2026, 15:37 UTC

- CVE-2026-33846: DTLS handshake reassembly add more checks (buffers.c) - CVE-2026-42009: DTLS reorder qsort with duplicate sequence numbers - CVE-2026-42011: X.509 name constraints intersection of empty constraints - CVE-2026-42012: URI/SRV SAN preclude CN fallback - CVE-2026-42013: prevent fallback on oversized SAN - CVE-2026-42014: PKCS#11 token set_pin UAF + leak - CVE-2026-5260: PKCS#11 RSA short-ciphertext overread; ciphertext must match modulus size - CVE-2026-42015: PKCS#12 bag-element off-by-one bound check

osv:CLSA-2026-1780069034

gnutls

Fixed versions: 3.6.16-4.el8.tuxcare.els12

gnutls-c++

Fixed versions: 3.6.16-4.el8.tuxcare.els12

gnutls-dane

Fixed versions: 3.6.16-4.el8.tuxcare.els12

gnutls-devel

Fixed versions: 3.6.16-4.el8.tuxcare.els12

gnutls-utils

Fixed versions: 3.6.16-4.el8.tuxcare.els12

Complete source record
{
  "id": "71d5f892d0c0468ea304649e3260674b75c8f378103d3cd14dea29d0409ec01a",
  "url": "https://osv.dev/vulnerability/CLSA-2026-1780069034",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "gnutls: Fix of 8 CVEs",
    "summary": "- CVE-2026-33846: DTLS handshake reassembly add more checks (buffers.c) - CVE-2026-42009: DTLS reorder qsort with duplicate sequence numbers - CVE-2026-42011: X.509 name constraints intersection of empty constraints - CVE-2026-42012: URI/SRV SAN preclude CN fallback - CVE-2026-42013: prevent fallback on oversized SAN - CVE-2026-42014: PKCS#11 token set_pin UAF + leak - CVE-2026-5260: PKCS#11 RSA short-ciphertext overread; ciphertext must match modulus size - CVE-2026-42015: PKCS#12 bag-element off-by-one bound check",
    "evidence": "osv:CLSA-2026-1780069034",
    "products": [
      {
        "name": {
          "value": "gnutls",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "3.6.16-4.el8.tuxcare.els12",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "gnutls-c++",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "3.6.16-4.el8.tuxcare.els12",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "gnutls-dane",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "3.6.16-4.el8.tuxcare.els12",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "gnutls-devel",
          "evidence": "/affected/3/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "3.6.16-4.el8.tuxcare.els12",
            "evidence": "/affected/3/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "gnutls-utils",
          "evidence": "/affected/4/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "3.6.16-4.el8.tuxcare.els12",
            "evidence": "/affected/4/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CLSA-2026-1780069034",
      "aliases": [
        "CLSA-2026-1780069034"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "3.6.16-4.el8.tuxcare.els12"
                }
              ]
            }
          ],
          "package": {
            "name": "gnutls",
            "purl": "pkg:rpm/tuxcare/gnutls?distro=centos-8.4",
            "ecosystem": "TuxCare:CentOS:8.4"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos8.4els/CLSA-2026-1780069034.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "3.6.16-4.el8.tuxcare.els12"
                }
              ]
            }
          ],
          "package": {
            "name": "gnutls-c++",
            "purl": "pkg:rpm/tuxcare/gnutls-c++?distro=centos-8.4",
            "ecosystem": "TuxCare:CentOS:8.4"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos8.4els/CLSA-2026-1780069034.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "3.6.16-4.el8.tuxcare.els12"
                }
              ]
            }
          ],
          "package": {
            "name": "gnutls-dane",
            "purl": "pkg:rpm/tuxcare/gnutls-dane?distro=centos-8.4",
            "ecosystem": "TuxCare:CentOS:8.4"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos8.4els/CLSA-2026-1780069034.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "3.6.16-4.el8.tuxcare.els12"
                }
              ]
            }
          ],
          "package": {
            "name": "gnutls-devel",
            "purl": "pkg:rpm/tuxcare/gnutls-devel?distro=centos-8.4",
            "ecosystem": "TuxCare:CentOS:8.4"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos8.4els/CLSA-2026-1780069034.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "3.6.16-4.el8.tuxcare.els12"
                }
              ]
            }
          ],
          "package": {
            "name": "gnutls-utils",
            "purl": "pkg:rpm/tuxcare/gnutls-utils?distro=centos-8.4",
            "ecosystem": "TuxCare:CentOS:8.4"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos8.4els/CLSA-2026-1780069034.json"
          }
        }
      ],
      "modified": "2026-10-26T09:43:51.017513344Z",
      "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/centos8.4els/CLSA-2026-1780069034.html"
      ]
    },
    "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": 450188,
  "published_at": "2026-05-29T15:37:18+00:00"
}