Description
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: SMP: force responder MITM requirements before building the pairing response smp_cmd_pairing_req() currently builds the pairing response from the initiator auth_req before enforcing the local BT_SECURITY_HIGH requirement. If the initiator omits SMP_AUTH_MITM, the response can also omit it even though the local side still requires MITM. tk_request() then sees an auth value without SMP_AUTH_MITM and may select JUST_CFM, making method selection inconsistent with the pairing policy the responder already enforces. When the local side requires HIGH security, first verify that MITM can be achieved from the IO capabilities and then force SMP_AUTH_MITM in the response in both rsp.auth_req and auth. This keeps the responder auth bits and later method selection aligned.
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
2b64d153a0cc9d2b60e47be013cde8490f16e0a5 to < 425a22c5373d4e1b46492ab869074ebeeade61f3affected2b64d153a0cc9d2b60e47be013cde8490f16e0a5 to < 7ab69426e7ecbd18a222ee2ec87ca612d30197d7affected2b64d153a0cc9d2b60e47be013cde8490f16e0a5 to < 01bb4045d2306c266178f49ce0c3576d237a3040affected2b64d153a0cc9d2b60e47be013cde8490f16e0a5 to < 91649c02c1baaa18cedf7fb425fa1f0f852c8183affected2b64d153a0cc9d2b60e47be013cde8490f16e0a5 to < c8ff0ca6508535bccabd81c5c9dcc63de8a3d4fbaffected2b64d153a0cc9d2b60e47be013cde8490f16e0a5 to < fa14e0e19820b1bbdb42185c9c4efa950bcffef9affected2b64d153a0cc9d2b60e47be013cde8490f16e0a5 to < ec17efb1ef91506cfd17a77692eaf4bbacb520eaaffected2b64d153a0cc9d2b60e47be013cde8490f16e0a5 to < d05111bfe37bfd8bd4d2dfe6675d6bdeef43f7c7affected
Linux Linux
Default version status: affected
3.3affected0 to < 3.3unaffected5.10.253 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/425a22c5373d4e1b46492ab869074ebeeade61f3 ↗
- https://git.kernel.org/stable/c/7ab69426e7ecbd18a222ee2ec87ca612d30197d7 ↗
- https://git.kernel.org/stable/c/01bb4045d2306c266178f49ce0c3576d237a3040 ↗
- https://git.kernel.org/stable/c/91649c02c1baaa18cedf7fb425fa1f0f852c8183 ↗
- https://git.kernel.org/stable/c/c8ff0ca6508535bccabd81c5c9dcc63de8a3d4fb ↗
- https://git.kernel.org/stable/c/fa14e0e19820b1bbdb42185c9c4efa950bcffef9 ↗
- https://git.kernel.org/stable/c/ec17efb1ef91506cfd17a77692eaf4bbacb520ea ↗
- https://git.kernel.org/stable/c/d05111bfe37bfd8bd4d2dfe6675d6bdeef43f7c7 ↗