In the Linux kernel, the following vulnerability has been resolved:
spi: uniphier: fix reference count leak in uniphierspiprobe()
The issue happens in several error paths in uniphierspiprobe().
When either dmagetslavecaps() or devmspiregistermaster() returns
an error code, the function forgets to decrease the refcount of both
dma_rx
and dma_tx
objects, which may lead to refcount leaks.
Fix it by decrementing the reference count of specific objects in those error paths.