Description
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: SMP: derive legacy responder STK authentication from MITM state The legacy responder path in smp_random() currently labels the stored STK as authenticated whenever pending_sec_level is BT_SECURITY_HIGH. That reflects what the local service requested, not what the pairing flow actually achieved. For Just Works/Confirm legacy pairing, SMP_FLAG_MITM_AUTH stays clear and the resulting STK should remain unauthenticated even if the local side requested HIGH security. Use the established MITM state when storing the responder STK so the key metadata matches the pairing result. This also keeps the legacy path aligned with the Secure Connections code, which already treats JUST_WORKS/JUST_CFM as unauthenticated.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
fff3490f47810e2d34b91fb9e31103e923b11c2f to < 9a38659a3d06080715691bd3139f9c4b61f688e3affectedfff3490f47810e2d34b91fb9e31103e923b11c2f to < 667f44f1392df6482483756458c48670e579e9ffaffectedfff3490f47810e2d34b91fb9e31103e923b11c2f to < 929db734d12db41ca5f95424db4612397f1bd4a7affectedfff3490f47810e2d34b91fb9e31103e923b11c2f to < b1c6a8e554a39b222c0879a288ea98e338fc4d77affectedfff3490f47810e2d34b91fb9e31103e923b11c2f to < 0afc846bd80073ffcd2b8040f2b2fafaea3d9f72affectedfff3490f47810e2d34b91fb9e31103e923b11c2f to < 061ee71ac6b03c9f8432fe49538c3682bfcf4cf3affectedfff3490f47810e2d34b91fb9e31103e923b11c2f to < 9a6d0db176f082685e0b6149700c0baf3ce2aa8baffectedfff3490f47810e2d34b91fb9e31103e923b11c2f to < 20756fec2f0108cb88e815941f1ffff88dc286feaffected14ec593d6bb050cf40a4ade2f9ac9ca050e0412caffected3.15.5 to < 3.16affected
Linux Linux
Default version status: affected
3.16affected0 to < 3.16unaffected5.10.253 to ≤ 5.10.*unaffected5.15.203 to ≤ 5.15.*unaffected6.1.168 to ≤ 6.1.*unaffected6.6.134 to ≤ 6.6.*unaffected6.12.81 to ≤ 6.12.*unaffected6.18.22 to ≤ 6.18.*unaffected6.19.12 to ≤ 6.19.*unaffected7.0 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/9a38659a3d06080715691bd3139f9c4b61f688e3 ↗
- https://git.kernel.org/stable/c/667f44f1392df6482483756458c48670e579e9ff ↗
- https://git.kernel.org/stable/c/929db734d12db41ca5f95424db4612397f1bd4a7 ↗
- https://git.kernel.org/stable/c/b1c6a8e554a39b222c0879a288ea98e338fc4d77 ↗
- https://git.kernel.org/stable/c/0afc846bd80073ffcd2b8040f2b2fafaea3d9f72 ↗
- https://git.kernel.org/stable/c/061ee71ac6b03c9f8432fe49538c3682bfcf4cf3 ↗
- https://git.kernel.org/stable/c/9a6d0db176f082685e0b6149700c0baf3ce2aa8b ↗
- https://git.kernel.org/stable/c/20756fec2f0108cb88e815941f1ffff88dc286fe ↗