CVE-2026-53297

In the Linux kernel, the following vulnerability has been resolved:

net: mana: Guard mana_remove against double invocation

If PM resume fails (e.g., manaattach() returns an error), manaprobe() calls manaremove(), which tears down the device and sets gd->gdmacontext = NULL and gd->driver_data = NULL.

However, a failed resume callback does not automatically unbind the driver. When the device is eventually unbound, mana_remove() is invoked a second time. Without a NULL check, it dereferences gc->dev with gc == NULL, causing a kernel panic.

Add an early return if gdmacontext or driverdata is NULL so the second invocation is harmless. Move the dev = gc->dev assignment after the guard so it cannot dereference NULL.