On 3/24/26 01:59, 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: ebc3d1791503 ("s390/cio: introduce driver_override on the css bus") Signed-off-by: Danilo Krummrich<[email protected]> ---
Thank you Danilo. Reviewed-by: Vineeth Vijayan <[email protected]>
