Hi Greg, > In the cleanup routine for failed initialization of HCI device, > the flush_work(&hdev->rx_work) need to be finished before the > flush_work(&hdev->cmd_work). Otherwise, the hci_rx_work() can > possibly invoke new cmd_work and cause a bug, like double free, > in late processings. > > This was assigned CVE-2021-3564. > > This patch reorder the flush_work() to fix this bug. > > Cc: Marcel Holtmann <marcel@xxxxxxxxxxxx> > Cc: Johan Hedberg <johan.hedberg@xxxxxxxxx> > Cc: Luiz Augusto von Dentz <luiz.dentz@xxxxxxxxx> > Cc: "David S. Miller" <davem@xxxxxxxxxxxxx> > Cc: Jakub Kicinski <kuba@xxxxxxxxxx> > Cc: linux-bluetooth@xxxxxxxxxxxxxxx > Cc: netdev@xxxxxxxxxxxxxxx > Cc: linux-kernel@xxxxxxxxxxxxxxx > Signed-off-by: Lin Ma <linma@xxxxxxxxxx> > Signed-off-by: Hao Xiong <mart1n@xxxxxxxxxx> > Cc: stable <stable@xxxxxxxxxxxxxxx> > Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> > --- > net/bluetooth/hci_core.c | 7 ++++++- > 1 file changed, 6 insertions(+), 1 deletion(-) patch has been applied to bluetooth-stable tree. Regards Marcel
