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.
Attack Parameters
Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v3.1
References 8
https://git.kernel.org/stable/c/077a7bc1c32d3da9670c5e282ea3e5ac8a94be59
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/49f6705d80b5e6175d8435d9c72b66bd516a8e89
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/82a5746c4c9e94f6f816ec7edea6ddc24417c6a5
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/8b5798ce0007874c14611b8ee4ce6c749855260e
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/b9fcf0db433d79648ace74bc2b8b88f91e306304
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/d44b828eb551bd59ba9f22457825cc3db3a39fc1
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/f3ad1c87d8201e54b66bd6072442f0b5d5a308ee
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/f4bb0a91f7badd6d15ac8d783a1169d9e1e95c17
416baaa9-dc9f-4396-8d5f-8c081fb06d67