{"id":"CVE-2026-64090","state":"PUBLISHED","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.","publishedAt":"2026-07-19T15:39:59.392Z","updatedAt":"2026-07-19T15:39:59.392Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"7ea7b4a142758deaf46c1af0ca9ceca6dd55138b","status":"affected","lessThan":"1f467d9a095211d3f77e8ff1bee90e73ffe01c64","versionType":"git"},{"version":"7ea7b4a142758deaf46c1af0ca9ceca6dd55138b","status":"affected","lessThan":"9a02c8fc963ddeecb5d8788be0740c1869fc54b7","versionType":"git"},{"version":"7ea7b4a142758deaf46c1af0ca9ceca6dd55138b","status":"affected","lessThan":"ea4f757641430bcc8322772e161453c4db5ecb64","versionType":"git"},{"version":"7ea7b4a142758deaf46c1af0ca9ceca6dd55138b","status":"affected","lessThan":"99f17d1cdb371cbd037975239b321f346d38f6d2","versionType":"git"},{"version":"7ea7b4a142758deaf46c1af0ca9ceca6dd55138b","status":"affected","lessThan":"cfb30645280a2131e46cbd1b9a38cfd3ff893f12","versionType":"git"},{"version":"7ea7b4a142758deaf46c1af0ca9ceca6dd55138b","status":"affected","lessThan":"b93ca6012712ecab2b551e120d7c95038d6a89e5","versionType":"git"},{"version":"7ea7b4a142758deaf46c1af0ca9ceca6dd55138b","status":"affected","lessThan":"ab26e346322648f5c39de017d9723c9256284fce","versionType":"git"},{"version":"7ea7b4a142758deaf46c1af0ca9ceca6dd55138b","status":"affected","lessThan":"fa1bd704940b5bcbc32c0b28db9167405c8ee5e0","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/batman-adv/translation-table.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.13","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.13","versionType":"semver"},{"version":"5.10.259","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.210","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.176","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.143","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.93","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.34","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.11","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/batman-adv/translation-table.c"]}],"references":["https://git.kernel.org/stable/c/1f467d9a095211d3f77e8ff1bee90e73ffe01c64","https://git.kernel.org/stable/c/9a02c8fc963ddeecb5d8788be0740c1869fc54b7","https://git.kernel.org/stable/c/ea4f757641430bcc8322772e161453c4db5ecb64","https://git.kernel.org/stable/c/99f17d1cdb371cbd037975239b321f346d38f6d2","https://git.kernel.org/stable/c/cfb30645280a2131e46cbd1b9a38cfd3ff893f12","https://git.kernel.org/stable/c/b93ca6012712ecab2b551e120d7c95038d6a89e5","https://git.kernel.org/stable/c/ab26e346322648f5c39de017d9723c9256284fce","https://git.kernel.org/stable/c/fa1bd704940b5bcbc32c0b28db9167405c8ee5e0"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:41.951Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/64xxx/CVE-2026-64090.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-64090","state":"PUBLISHED","datePublished":"2026-07-19T15:39:59.392Z","dateUpdated":"2026-07-19T15:39:59.392Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-07-19T07:54:57.032Z"},"containers":{"cna":{"title":"batman-adv: tt: avoid empty VLAN responses","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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"7ea7b4a142758deaf46c1af0ca9ceca6dd55138b","status":"affected","lessThan":"1f467d9a095211d3f77e8ff1bee90e73ffe01c64","versionType":"git"},{"version":"7ea7b4a142758deaf46c1af0ca9ceca6dd55138b","status":"affected","lessThan":"9a02c8fc963ddeecb5d8788be0740c1869fc54b7","versionType":"git"},{"version":"7ea7b4a142758deaf46c1af0ca9ceca6dd55138b","status":"affected","lessThan":"ea4f757641430bcc8322772e161453c4db5ecb64","versionType":"git"},{"version":"7ea7b4a142758deaf46c1af0ca9ceca6dd55138b","status":"affected","lessThan":"99f17d1cdb371cbd037975239b321f346d38f6d2","versionType":"git"},{"version":"7ea7b4a142758deaf46c1af0ca9ceca6dd55138b","status":"affected","lessThan":"cfb30645280a2131e46cbd1b9a38cfd3ff893f12","versionType":"git"},{"version":"7ea7b4a142758deaf46c1af0ca9ceca6dd55138b","status":"affected","lessThan":"b93ca6012712ecab2b551e120d7c95038d6a89e5","versionType":"git"},{"version":"7ea7b4a142758deaf46c1af0ca9ceca6dd55138b","status":"affected","lessThan":"ab26e346322648f5c39de017d9723c9256284fce","versionType":"git"},{"version":"7ea7b4a142758deaf46c1af0ca9ceca6dd55138b","status":"affected","lessThan":"fa1bd704940b5bcbc32c0b28db9167405c8ee5e0","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/batman-adv/translation-table.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.13","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.13","versionType":"semver"},{"version":"5.10.259","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.210","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.176","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.143","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.93","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.34","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.11","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/batman-adv/translation-table.c"]}],"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"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-07-19T15:39:59.392Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.13","versionEndExcluding":"5.10.259"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.13","versionEndExcluding":"5.15.210"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.13","versionEndExcluding":"6.1.176"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.13","versionEndExcluding":"6.6.143"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.13","versionEndExcluding":"6.12.93"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.13","versionEndExcluding":"6.18.34"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.13","versionEndExcluding":"7.0.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.13","versionEndExcluding":"7.1"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}