ALSA-2026:20613 (CVE-2026-33845)

Vulnerability from osv_almalinux – Published: 2026-05-26 00:00 – Updated: 2026-07-08 11:55 – Source website
VLAI
Summary
Important: gnutls security update
Details

The gnutls packages provide the GNU Transport Layer Security (GnuTLS) library,
which implements cryptographic algorithms and protocols such as SSL, TLS, and
DTLS.

Security Fix(es):

  • gnutls: Fix qsort comparator in DTLS reassembly (CVE-2026-42009)
  • gnutls: Fix crashing on an underflow with a DTLS datagram (CVE-2026-33845)
  • gnutls: Fix RSA-PSK identity truncation (CVE-2026-42010)
  • gnutls: Fix case-sensitivity of domain name comparison in name constraints (CVE-2026-3833)
  • gnutls: Fix intersecting empty name constraints (CVE-2026-42011)
  • gnutls: Denial of Service via heap buffer overflow in DTLS handshake fragment reassembly (CVE-2026-33846)

For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE page(s)
listed in the References section.

References
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "AlmaLinux:10",
        "name": "gnutls"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.8.10-4.el10_2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:10",
        "name": "gnutls-c++"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.8.10-4.el10_2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:10",
        "name": "gnutls-dane"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.8.10-4.el10_2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:10",
        "name": "gnutls-devel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.8.10-4.el10_2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:10",
        "name": "gnutls-fips"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.8.10-4.el10_2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:10",
        "name": "gnutls-utils"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.8.10-4.el10_2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "The gnutls packages provide the GNU Transport Layer Security (GnuTLS) library,  \nwhich implements cryptographic algorithms and protocols such as SSL, TLS, and  \nDTLS.  \n\nSecurity Fix(es):  \n\n  * gnutls: Fix qsort comparator in DTLS reassembly (CVE-2026-42009)\n  * gnutls: Fix crashing on an underflow with a DTLS datagram (CVE-2026-33845)\n  * gnutls: Fix RSA-PSK identity truncation (CVE-2026-42010)\n  * gnutls: Fix case-sensitivity of domain name comparison in name constraints (CVE-2026-3833)\n  * gnutls: Fix intersecting empty name constraints (CVE-2026-42011)\n  * gnutls: Denial of Service via heap buffer overflow in DTLS handshake fragment reassembly (CVE-2026-33846)\n\n\nFor more details about the security issue(s), including the impact, a CVSS  \nscore, acknowledgments, and other related information, refer to the CVE page(s)  \nlisted in the References section.\n",
  "id": "ALSA-2026:20613",
  "modified": "2026-07-08T11:55:27Z",
  "published": "2026-05-26T00:00:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:20613"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-33845"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-33846"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-3832"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-3833"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-42009"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-42010"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-42011"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-42012"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-42013"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-42014"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-42015"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-5260"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-5419"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2445763"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2450624"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2450625"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2467279"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2467289"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2467437"
    },
    {
      "type": "ADVISORY",
      "url": "https://errata.almalinux.org/10/ALSA-2026-20613.html"
    }
  ],
  "related": [
    "CVE-2026-33845",
    "CVE-2026-33846",
    "CVE-2026-3832",
    "CVE-2026-3833",
    "CVE-2026-42009",
    "CVE-2026-42010",
    "CVE-2026-42011",
    "CVE-2026-42012",
    "CVE-2026-42013",
    "CVE-2026-42014",
    "CVE-2026-42015",
    "CVE-2026-5260",
    "CVE-2026-5419"
  ],
  "schema_version": "1.7.0",
  "summary": "Important: gnutls security update",
  "upstream": [
    "CVE-2026-33845",
    "CVE-2026-33846",
    "CVE-2026-3832",
    "CVE-2026-3833",
    "CVE-2026-42009",
    "CVE-2026-42010",
    "CVE-2026-42011",
    "CVE-2026-42012",
    "CVE-2026-42013",
    "CVE-2026-42014",
    "CVE-2026-42015",
    "CVE-2026-5260",
    "CVE-2026-5419"
  ]
}



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