Vulnerability-Lookup

GHSA-J7VJ-7VR5-66W9

Vulnerability from github – Published: 2026-07-19 18:31 – Updated: 2026-07-19 18:31

Details

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.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-64090"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-19T16:17:49Z",
    "severity": null
  },
  "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": "GHSA-j7vj-7vr5-66w9",
  "modified": "2026-07-19T18:31:52Z",
  "published": "2026-07-19T18:31:51Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64090"
    },
    {
      "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"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-64090 (GCVE-0-2026-64090)

Vulnerability from cvelistv5 – Published: 2026-07-19 15:39 – Updated: 2026-07-19 15:39

Title

batman-adv: tt: avoid empty VLAN responses

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.

Severity

No CVSS data available.

Assigner

Linux

References

8 references

URL	Tags
https://git.kernel.org/stable/c/1f467d9a095211d3f…
https://git.kernel.org/stable/c/9a02c8fc963ddeecb…
https://git.kernel.org/stable/c/ea4f757641430bcc8…
https://git.kernel.org/stable/c/99f17d1cdb371cbd0…
https://git.kernel.org/stable/c/cfb30645280a2131e…
https://git.kernel.org/stable/c/b93ca6012712ecab2…
https://git.kernel.org/stable/c/ab26e346322648f5c…
https://git.kernel.org/stable/c/fa1bd704940b5bcbc…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 7ea7b4a142758deaf46c1af0ca9ceca6dd55138b , < 1f467d9a095211d3f77e8ff1bee90e73ffe01c64 (git) Affected: 7ea7b4a142758deaf46c1af0ca9ceca6dd55138b , < 9a02c8fc963ddeecb5d8788be0740c1869fc54b7 (git) Affected: 7ea7b4a142758deaf46c1af0ca9ceca6dd55138b , < ea4f757641430bcc8322772e161453c4db5ecb64 (git) Affected: 7ea7b4a142758deaf46c1af0ca9ceca6dd55138b , < 99f17d1cdb371cbd037975239b321f346d38f6d2 (git) Affected: 7ea7b4a142758deaf46c1af0ca9ceca6dd55138b , < cfb30645280a2131e46cbd1b9a38cfd3ff893f12 (git) Affected: 7ea7b4a142758deaf46c1af0ca9ceca6dd55138b , < b93ca6012712ecab2b551e120d7c95038d6a89e5 (git) Affected: 7ea7b4a142758deaf46c1af0ca9ceca6dd55138b , < ab26e346322648f5c39de017d9723c9256284fce (git) Affected: 7ea7b4a142758deaf46c1af0ca9ceca6dd55138b , < fa1bd704940b5bcbc32c0b28db9167405c8ee5e0 (git)
Linux	Linux	Affected: 3.13 Unaffected: 0 , < 3.13 (semver) Unaffected: 5.10.259 , ≤ 5.10.* (semver) Unaffected: 5.15.210 , ≤ 5.15.* (semver) Unaffected: 6.1.176 , ≤ 6.1.* (semver) Unaffected: 6.6.143 , ≤ 6.6.* (semver) Unaffected: 6.12.93 , ≤ 6.12.* (semver) Unaffected: 6.18.34 , ≤ 6.18.* (semver) Unaffected: 7.0.11 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)

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        {
          "defaultStatus": "unaffected",
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          "programFiles": [
            "net/batman-adv/translation-table.c"
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            },
            {
              "lessThan": "3.13",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.259",
              "versionType": "semver"
            },
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              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
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              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.176",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "6.6.143",
              "versionType": "semver"
            },
            {
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              "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": [
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        }
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        "shortName": "Linux"
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    "datePublished": "2026-07-19T15:39:59.392Z",
    "dateReserved": "2026-07-19T07:54:57.032Z",
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-J7VJ-7VR5-66W9

CVE-2026-64090 (GCVE-0-2026-64090)

Tags

Sightings

Nomenclature