tree 00c6677f4dcf1649d56bddc51eec0b5a3d067ea8
parent 208db8850715766b675ce9264ab3b5919ddfbbb3
author Itay Iellin <ieitayie@gmail.com> 1651926768 -0400
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1652636357 +0200

Bluetooth: Fix the creation of hdev->name

commit 103a2f3255a95991252f8f13375c3a96a75011cd upstream.

Set a size limit of 8 bytes of the written buffer to "hdev->name"
including the terminating null byte, as the size of "hdev->name" is 8
bytes. If an id value which is greater than 9999 is allocated,
then the "snprintf(hdev->name, sizeof(hdev->name), "hci%d", id)"
function call would lead to a truncation of the id value in decimal
notation.

Set an explicit maximum id parameter in the id allocation function call.
The id allocation function defines the maximum allocated id value as the
maximum id parameter value minus one. Therefore, HCI_MAX_ID is defined
as 10000.

Signed-off-by: Itay Iellin <ieitayie@gmail.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>