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applications: nrf_desktop: Add a note about disabling BLE legacy pairing #20619

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Feb 26, 2025
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applications: nrf_desktop: Add a note about disabling BLE legacy pairing #20619

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6 changes: 6 additions & 0 deletions doc/nrf/releases_and_maturity/releases/release-notes-changelog.rst
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Expand Up @@ -254,6 +254,12 @@ nRF Desktop
This change results from the Bluetooth subsystem transition to the PSA cryptographic API.
The GATT database hash calculation now requires larger stack size.

* Support for Bluetooth LE legacy pairing is no longer enabled by default, because it is not secure.
Using Bluetooth LE legacy pairing introduces, among others, a risk of passive eavesdropping.
Supporting Bluetooth LE legacy pairing makes devices vulnerable for a downgrade attack.
The :kconfig:option:`CONFIG_BT_SMP_SC_PAIR_ONLY` Kconfig option is enabled by default in Zephyr.
If you still need to support the Bluetooth LE legacy pairing, you need to disable the option in the configuration.

* Added:

* System Power Management for the :ref:`zephyr:nrf54h20dk_nrf54h20` board target on the application and radio cores.
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