{"api_version":"1","generated_at":"2026-07-24T19:52:49+00:00","cve":"CVE-2026-64090","urls":{"html":"https://cve.report/CVE-2026-64090","api":"https://cve.report/api/cve/CVE-2026-64090.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-64090","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-64090"},"summary":{"title":"batman-adv: tt: avoid empty VLAN responses","description":"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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-07-19 16:17:49","updated_at":"2026-07-19 16:17:49"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/cfb30645280a2131e46cbd1b9a38cfd3ff893f12","name":"https://git.kernel.org/stable/c/cfb30645280a2131e46cbd1b9a38cfd3ff893f12","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/9a02c8fc963ddeecb5d8788be0740c1869fc54b7","name":"https://git.kernel.org/stable/c/9a02c8fc963ddeecb5d8788be0740c1869fc54b7","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/1f467d9a095211d3f77e8ff1bee90e73ffe01c64","name":"https://git.kernel.org/stable/c/1f467d9a095211d3f77e8ff1bee90e73ffe01c64","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/99f17d1cdb371cbd037975239b321f346d38f6d2","name":"https://git.kernel.org/stable/c/99f17d1cdb371cbd037975239b321f346d38f6d2","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/ea4f757641430bcc8322772e161453c4db5ecb64","name":"https://git.kernel.org/stable/c/ea4f757641430bcc8322772e161453c4db5ecb64","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/ab26e346322648f5c39de017d9723c9256284fce","name":"https://git.kernel.org/stable/c/ab26e346322648f5c39de017d9723c9256284fce","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b93ca6012712ecab2b551e120d7c95038d6a89e5","name":"https://git.kernel.org/stable/c/b93ca6012712ecab2b551e120d7c95038d6a89e5","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/fa1bd704940b5bcbc32c0b28db9167405c8ee5e0","name":"https://git.kernel.org/stable/c/fa1bd704940b5bcbc32c0b28db9167405c8ee5e0","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-64090","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64090","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7ea7b4a142758deaf46c1af0ca9ceca6dd55138b 1f467d9a095211d3f77e8ff1bee90e73ffe01c64 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7ea7b4a142758deaf46c1af0ca9ceca6dd55138b 9a02c8fc963ddeecb5d8788be0740c1869fc54b7 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7ea7b4a142758deaf46c1af0ca9ceca6dd55138b ea4f757641430bcc8322772e161453c4db5ecb64 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7ea7b4a142758deaf46c1af0ca9ceca6dd55138b 99f17d1cdb371cbd037975239b321f346d38f6d2 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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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"},"nvd":{"publishedDate":"2026-07-19 16:17:49","lastModifiedDate":"2026-07-19 16:17:49","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"64090","Ordinal":"1","Title":"batman-adv: tt: avoid empty VLAN responses","CVE":"CVE-2026-64090","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"64090","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"batman-adv: tt: avoid empty VLAN responses"}]}}}