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wireshark: Fix of 2 CVEs

Type: advisorySources: OSV

- CVE-2026-6868: stop reusing the X.25 conversation after dissecting IP so subdissectors do not read past a stack variable - CVE-2026-6535: prevent integer overflows when sizing and accumulating the zlib decompression buffer

Products
wireshark, wireshark-cli, wireshark-devel
Affected versions
Not specified
Fixed versions
1:3.4.10-7.el9_6.tuxcare.els9
CVEs
CVE-2026-6535, CVE-2026-6868
Confirmed fixed CVEs
Not specified
Updated in this feed
1 Nov 2026, 11:52 UTC · Revision 1

Source evidence

wireshark: Fix of 2 CVEs

core-osv · Original source

Published 1 Aug 2026, 06:01 UTC

- CVE-2026-6868: stop reusing the X.25 conversation after dissecting IP so subdissectors do not read past a stack variable - CVE-2026-6535: prevent integer overflows when sizing and accumulating the zlib decompression buffer

osv:CLSA-2026-1785564050

wireshark

Fixed versions: 1:3.4.10-7.el9_6.tuxcare.els9

wireshark-cli

Fixed versions: 1:3.4.10-7.el9_6.tuxcare.els9

wireshark-devel

Fixed versions: 1:3.4.10-7.el9_6.tuxcare.els9

Complete source record
{
  "id": "1e0d7333abe6609695e26929c881187e288c0c6d5c947b1d5adfc2c331df4723",
  "url": "https://osv.dev/vulnerability/CLSA-2026-1785564050",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "wireshark: Fix of 2 CVEs",
    "summary": "- CVE-2026-6868: stop reusing the X.25 conversation after dissecting IP so subdissectors do not read past a stack variable - CVE-2026-6535: prevent integer overflows when sizing and accumulating the zlib decompression buffer",
    "evidence": "osv:CLSA-2026-1785564050",
    "products": [
      {
        "name": {
          "value": "wireshark",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1:3.4.10-7.el9_6.tuxcare.els9",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "wireshark-cli",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1:3.4.10-7.el9_6.tuxcare.els9",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "wireshark-devel",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1:3.4.10-7.el9_6.tuxcare.els9",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CLSA-2026-1785564050",
      "aliases": [
        "CLSA-2026-1785564050"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1:3.4.10-7.el9_6.tuxcare.els9"
                }
              ]
            }
          ],
          "package": {
            "name": "wireshark",
            "purl": "pkg:rpm/tuxcare/wireshark?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-2026-1785564050.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1:3.4.10-7.el9_6.tuxcare.els9"
                }
              ]
            }
          ],
          "package": {
            "name": "wireshark-cli",
            "purl": "pkg:rpm/tuxcare/wireshark-cli?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-2026-1785564050.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1:3.4.10-7.el9_6.tuxcare.els9"
                }
              ]
            }
          ],
          "package": {
            "name": "wireshark-devel",
            "purl": "pkg:rpm/tuxcare/wireshark-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-2026-1785564050.json"
          }
        }
      ],
      "modified": "2026-10-26T09:43:37.448529542Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-6535",
        "CVE-2026-6868"
      ],
      "references": [
        "https://errata.tuxcare.com/els_os/tuxcare9.6esu/CLSA-2026-1785564050.html",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-6535",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-6868"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-6535",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-6868",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 450036,
  "published_at": "2026-08-01T06:01:01+00:00"
}