{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "7ea7b4a142758deaf46c1af0ca9ceca6dd55138b"
            },
            {
              "fixed": "1f467d9a095211d3f77e8ff1bee90e73ffe01c64"
            },
            {
              "fixed": "9a02c8fc963ddeecb5d8788be0740c1869fc54b7"
            },
            {
              "fixed": "ea4f757641430bcc8322772e161453c4db5ecb64"
            },
            {
              "fixed": "99f17d1cdb371cbd037975239b321f346d38f6d2"
            },
            {
              "fixed": "cfb30645280a2131e46cbd1b9a38cfd3ff893f12"
            },
            {
              "fixed": "b93ca6012712ecab2b551e120d7c95038d6a89e5"
            },
            {
              "fixed": "ab26e346322648f5c39de017d9723c9256284fce"
            },
            {
              "fixed": "fa1bd704940b5bcbc32c0b28db9167405c8ee5e0"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.13.0"
            },
            {
              "fixed": "5.10.259"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.210"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.176"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.143"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.93"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.34"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.0.11"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64090.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbatman-adv: tt: avoid empty VLAN responses\n\nThe commit 16116dac2339 (\"batman-adv: prevent TT request storms by not\nsending inconsistent TT TLVLs\") added checks to the local (direct) TT\nresponse code. But the response can also be done indirectly by another node\nusing the global TT state. To avoid such inconsistency states reported in\nthe original fix, also avoid sending empty VLANs for replies from the\nglobal TT state.",
  "id": "CVE-2026-64090",
  "modified": "2026-07-21T03:41:52.341126065Z",
  "published": "2026-07-19T15:39:59.392Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1f467d9a095211d3f77e8ff1bee90e73ffe01c64"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/99f17d1cdb371cbd037975239b321f346d38f6d2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9a02c8fc963ddeecb5d8788be0740c1869fc54b7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ab26e346322648f5c39de017d9723c9256284fce"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b93ca6012712ecab2b551e120d7c95038d6a89e5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cfb30645280a2131e46cbd1b9a38cfd3ff893f12"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ea4f757641430bcc8322772e161453c4db5ecb64"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fa1bd704940b5bcbc32c0b28db9167405c8ee5e0"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64090.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64090"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "summary": "batman-adv: tt: avoid empty VLAN responses"
}