Important: wireshark security update

{
  "id": "764923729cf9f99ef26d9c75958472ebc3d055e6955d3e5ab9832963add96b51",
  "url": "https://osv.dev/vulnerability/RLSA-2026%3A84721",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Important: wireshark security update",
    "summary": "The wireshark packages contain a network protocol analyzer used to capture and browse the traffic running on a computer network. Security Fix(es): * wireshark: Wireshark: Denial of Service via C12.22 protocol dissector crash (CVE-2026-76886) * wireshark: Wireshark: Denial of Service via RRC protocol dissector out-of-bounds write (CVE-2026-76880) * wireshark: Wireshark: Denial of Service vulnerability in ESS protocol dissector (CVE-2026-76919) * wireshark: Wireshark: Denial of Service via C12.22 protocol dissector crash (CVE-2026-76879) * wireshark: Wireshark: Denial of Service via X.509IF protocol dissector crash (CVE-2026-76928) * wireshark: Wireshark: Denial of Service vulnerability in H.245 protocol dissector (CVE-2026-76927) * wireshark: wireshark: Denial of Service via heap-based buffer overflow in SPDY dissector (CVE-2026-95387) * wireshark: Heap-based Buffer Overflow in Wireshark (CVE-2026-95389) 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.",
    "evidence": "osv:RLSA-2026:84721",
    "products": [
      {
        "name": {
          "value": "wireshark",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1:4.4.2-10.el10_2.8",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "RLSA-2026:84721",
      "aliases": [
        "RLSA-2026:84721"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1:4.4.2-10.el10_2.8"
                }
              ],
              "database_specific": {
                "yum_repository": "AppStream"
              }
            }
          ],
          "package": {
            "name": "wireshark",
            "purl": "pkg:rpm/rocky-linux/wireshark?distro=rocky-linux-10&epoch=1",
            "ecosystem": "Rocky Linux:10"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/resf-osv-data/RLSA-2026:84721.json"
          }
        }
      ],
      "modified": "2026-10-20T12:15:37.989467797Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-76879",
        "CVE-2026-76880",
        "CVE-2026-76886",
        "CVE-2026-76919",
        "CVE-2026-76927",
        "CVE-2026-76928",
        "CVE-2026-95387",
        "CVE-2026-95389"
      ],
      "references": [
        "https://errata.rockylinux.org/RLSA-2026:84721",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2520079",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2520088",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2520093",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2520098",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2520100",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2520103",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2543033",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2543037",
        "https://access.redhat.com/errata/RHSA-2026:84721"
      ],
      "provider_metadata": {
        "license": "CC-BY-4.0",
        "license_url": "https://creativecommons.org/licenses/by/4.0/",
        "source_advisory": "RHSA-2026:84721"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-76879",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-76880",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-76886",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-76919",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-76927",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-76928",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-95387",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-95389",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 387265,
  "published_at": "2026-10-20T12:10:14.939262+00:00"
}