CVE-2021-47195 spi: fix use-after-free of the add_lock mutex

In the Linux kernel, the following vulnerability has been resolved: spi: fix use-after-free of the addlock mutex Commit 6098475d4cb4 "spi: Fix deadlock when adding SPI controllers on SPI buses" introduced a per-controller mutex. But mutexunlock of said lock is called after the controller is alrea...

GSD-2021-1002308 spi: fix use-after-free of the add_lock mutex

spi: fix use-after-free of the addlock mutex This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.15.5 by commit...