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

spi: uniphier: Fix completion initialization order before devm_request_irq()

The driver calls devm_request_irq() before initializing the completion
used by the interrupt handler. Because the interrupt may occur immediately
after devm_request_irq(), the handler may execute before init_completion().

This may result in calling complete() on an uninitialized completion,
causing undefined behavior. This has been observed with KASAN.

Fix this by initializing the completion before registering the IRQ.

https://git.kernel.org/stable/c/077a7bc1c32d3da9670c5e282ea3e5ac8a94be59

https://git.kernel.org/stable/c/49f6705d80b5e6175d8435d9c72b66bd516a8e89

https://git.kernel.org/stable/c/82a5746c4c9e94f6f816ec7edea6ddc24417c6a5

https://git.kernel.org/stable/c/8b5798ce0007874c14611b8ee4ce6c749855260e

https://git.kernel.org/stable/c/b9fcf0db433d79648ace74bc2b8b88f91e306304

https://git.kernel.org/stable/c/d44b828eb551bd59ba9f22457825cc3db3a39fc1

https://git.kernel.org/stable/c/f3ad1c87d8201e54b66bd6072442f0b5d5a308ee

https://git.kernel.org/stable/c/f4bb0a91f7badd6d15ac8d783a1169d9e1e95c17

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