4.19-stable review patch. If anyone has any objections, please let me know.
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From: Edward AD twuufnxlz@gmail.com
commit 18f547f3fc074500ab5d419cf482240324e73a7e upstream.
When accessing hdev->name, the actual string length should prevail
Reported-by: syzbot+c90849c50ed209d77689@syzkaller.appspotmail.com Fixes: dcda165706b9 ("Bluetooth: hci_core: Fix build warnings") Signed-off-by: Edward AD twuufnxlz@gmail.com Signed-off-by: Luiz Augusto von Dentz luiz.von.dentz@intel.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- net/bluetooth/hci_sock.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/net/bluetooth/hci_sock.c +++ b/net/bluetooth/hci_sock.c @@ -430,7 +430,7 @@ static struct sk_buff *create_monitor_ev ni->type = hdev->dev_type; ni->bus = hdev->bus; bacpy(&ni->bdaddr, &hdev->bdaddr); - memcpy(ni->name, hdev->name, 8); + memcpy(ni->name, hdev->name, strlen(hdev->name));
opcode = cpu_to_le16(HCI_MON_NEW_INDEX); break;