CVE-2026-64090 (GCVE-0-2026-64090)
Vulnerability from cvelistv5
Published
2026-07-19 15:39
Modified
2026-07-19 15:39
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: batman-adv: tt: avoid empty VLAN responses The commit 16116dac2339 ("batman-adv: prevent TT request storms by not sending inconsistent TT TLVLs") added checks to the local (direct) TT response code. But the response can also be done indirectly by another node using the global TT state. To avoid such inconsistency states reported in the original fix, also avoid sending empty VLANs for replies from the global TT state.
References
Impacted products
Vendor Product Version
Linux Linux Version: 7ea7b4a142758deaf46c1af0ca9ceca6dd55138b
Version: 7ea7b4a142758deaf46c1af0ca9ceca6dd55138b
Version: 7ea7b4a142758deaf46c1af0ca9ceca6dd55138b
Version: 7ea7b4a142758deaf46c1af0ca9ceca6dd55138b
Version: 7ea7b4a142758deaf46c1af0ca9ceca6dd55138b
Version: 7ea7b4a142758deaf46c1af0ca9ceca6dd55138b
Version: 7ea7b4a142758deaf46c1af0ca9ceca6dd55138b
Version: 7ea7b4a142758deaf46c1af0ca9ceca6dd55138b
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/batman-adv/translation-table.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "1f467d9a095211d3f77e8ff1bee90e73ffe01c64",
              "status": "affected",
              "version": "7ea7b4a142758deaf46c1af0ca9ceca6dd55138b",
              "versionType": "git"
            },
            {
              "lessThan": "9a02c8fc963ddeecb5d8788be0740c1869fc54b7",
              "status": "affected",
              "version": "7ea7b4a142758deaf46c1af0ca9ceca6dd55138b",
              "versionType": "git"
            },
            {
              "lessThan": "ea4f757641430bcc8322772e161453c4db5ecb64",
              "status": "affected",
              "version": "7ea7b4a142758deaf46c1af0ca9ceca6dd55138b",
              "versionType": "git"
            },
            {
              "lessThan": "99f17d1cdb371cbd037975239b321f346d38f6d2",
              "status": "affected",
              "version": "7ea7b4a142758deaf46c1af0ca9ceca6dd55138b",
              "versionType": "git"
            },
            {
              "lessThan": "cfb30645280a2131e46cbd1b9a38cfd3ff893f12",
              "status": "affected",
              "version": "7ea7b4a142758deaf46c1af0ca9ceca6dd55138b",
              "versionType": "git"
            },
            {
              "lessThan": "b93ca6012712ecab2b551e120d7c95038d6a89e5",
              "status": "affected",
              "version": "7ea7b4a142758deaf46c1af0ca9ceca6dd55138b",
              "versionType": "git"
            },
            {
              "lessThan": "ab26e346322648f5c39de017d9723c9256284fce",
              "status": "affected",
              "version": "7ea7b4a142758deaf46c1af0ca9ceca6dd55138b",
              "versionType": "git"
            },
            {
              "lessThan": "fa1bd704940b5bcbc32c0b28db9167405c8ee5e0",
              "status": "affected",
              "version": "7ea7b4a142758deaf46c1af0ca9ceca6dd55138b",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/batman-adv/translation-table.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.13"
            },
            {
              "lessThan": "3.13",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.259",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.210",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.176",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.143",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.93",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.34",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.259",
                  "versionStartIncluding": "3.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.210",
                  "versionStartIncluding": "3.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.176",
                  "versionStartIncluding": "3.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.143",
                  "versionStartIncluding": "3.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.93",
                  "versionStartIncluding": "3.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.34",
                  "versionStartIncluding": "3.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0.11",
                  "versionStartIncluding": "3.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1",
                  "versionStartIncluding": "3.13",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-19T15:39:59.392Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/1f467d9a095211d3f77e8ff1bee90e73ffe01c64"
        },
        {
          "url": "https://git.kernel.org/stable/c/9a02c8fc963ddeecb5d8788be0740c1869fc54b7"
        },
        {
          "url": "https://git.kernel.org/stable/c/ea4f757641430bcc8322772e161453c4db5ecb64"
        },
        {
          "url": "https://git.kernel.org/stable/c/99f17d1cdb371cbd037975239b321f346d38f6d2"
        },
        {
          "url": "https://git.kernel.org/stable/c/cfb30645280a2131e46cbd1b9a38cfd3ff893f12"
        },
        {
          "url": "https://git.kernel.org/stable/c/b93ca6012712ecab2b551e120d7c95038d6a89e5"
        },
        {
          "url": "https://git.kernel.org/stable/c/ab26e346322648f5c39de017d9723c9256284fce"
        },
        {
          "url": "https://git.kernel.org/stable/c/fa1bd704940b5bcbc32c0b28db9167405c8ee5e0"
        }
      ],
      "title": "batman-adv: tt: avoid empty VLAN responses",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-64090",
    "datePublished": "2026-07-19T15:39:59.392Z",
    "dateReserved": "2026-07-19T07:54:57.032Z",
    "dateUpdated": "2026-07-19T15:39:59.392Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.