In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btbcm: Fix NULL deref in btbcm_get_board_name() devm_kstrdup() can return a NULL pointer on failure,but this returned value in btbcm_get_board_name() is not checked. Add NULL check in btbcm_get_board_name(), to handle kernel NULL pointer dereference error.
https://git.kernel.org/stable/c/df2f2d9199e61819cca5da0121dfa4d4cb57000f
https://git.kernel.org/stable/c/b88655bc6593c6a7fdc1248b212d17e581c4334e
https://git.kernel.org/stable/c/74af8b9d0e79deefd2d43e14b84575839a849169