batman-adv: tt: avoid empty VLAN responses

Summary

CVECVE-2026-64090
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-19 16:17:49 UTC
Updated2026-07-19 16:17:49 UTC
DescriptionIn 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.

Risk And Classification

EPSS: 0.001840000 probability, percentile 0.082510000 (date 2026-07-20)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 7ea7b4a142758deaf46c1af0ca9ceca6dd55138b 1f467d9a095211d3f77e8ff1bee90e73ffe01c64 git Not specified
CNA Linux Linux affected 7ea7b4a142758deaf46c1af0ca9ceca6dd55138b 9a02c8fc963ddeecb5d8788be0740c1869fc54b7 git Not specified
CNA Linux Linux affected 7ea7b4a142758deaf46c1af0ca9ceca6dd55138b ea4f757641430bcc8322772e161453c4db5ecb64 git Not specified
CNA Linux Linux affected 7ea7b4a142758deaf46c1af0ca9ceca6dd55138b 99f17d1cdb371cbd037975239b321f346d38f6d2 git Not specified
CNA Linux Linux affected 7ea7b4a142758deaf46c1af0ca9ceca6dd55138b cfb30645280a2131e46cbd1b9a38cfd3ff893f12 git Not specified
CNA Linux Linux affected 7ea7b4a142758deaf46c1af0ca9ceca6dd55138b b93ca6012712ecab2b551e120d7c95038d6a89e5 git Not specified
CNA Linux Linux affected 7ea7b4a142758deaf46c1af0ca9ceca6dd55138b ab26e346322648f5c39de017d9723c9256284fce git Not specified
CNA Linux Linux affected 7ea7b4a142758deaf46c1af0ca9ceca6dd55138b fa1bd704940b5bcbc32c0b28db9167405c8ee5e0 git Not specified
CNA Linux Linux affected 3.13 Not specified
CNA Linux Linux unaffected 3.13 semver Not specified
CNA Linux Linux unaffected 5.10.259 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.210 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.176 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.143 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.93 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.34 6.18.* semver Not specified
CNA Linux Linux unaffected 7.0.11 7.0.* semver Not specified
CNA Linux Linux unaffected 7.1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/cfb30645280a2131e46cbd1b9a38cfd3ff893f12 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/9a02c8fc963ddeecb5d8788be0740c1869fc54b7 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/1f467d9a095211d3f77e8ff1bee90e73ffe01c64 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/99f17d1cdb371cbd037975239b321f346d38f6d2 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/ea4f757641430bcc8322772e161453c4db5ecb64 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/ab26e346322648f5c39de017d9723c9256284fce 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/b93ca6012712ecab2b551e120d7c95038d6a89e5 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/fa1bd704940b5bcbc32c0b28db9167405c8ee5e0 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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