On Tue, Mar 24, 2026 at 01:59:06AM +0100, Danilo Krummrich wrote: > When a driver is probed through __driver_attach(), the bus' match() > callback is called without the device lock held, thus accessing the > driver_override field without a lock, which can cause a UAF. > > Fix this by using the driver-core driver_override infrastructure taking > care of proper locking internally. > > Note that calling match() from __driver_attach() without the device lock > held is intentional. [1] > > Link: > https://lore.kernel.org/driver-core/[email protected]/ [1] > Reported-by: Gui-Dong Han <[email protected]> > Closes: https://bugzilla.kernel.org/show_bug.cgi?id=220789 > Fixes: 1f86a00c1159 ("bus/fsl-mc: add support for 'driver_override' in the > mc-bus") > Signed-off-by: Danilo Krummrich <[email protected]>
Tested-by: Ioana Ciornei <[email protected]> Signed-off-by: Ioana Ciornei <[email protected]>
