In the Linux kernel, the following vulnerability has been resolved:
iio: temperature: tmp006: use devm_iio_trigger_register
tmp006_probe() allocates the DRDY trigger with devm_iio_trigger_alloc()
but registers it with plain iio_trigger_register(). The driver has no
.remove() callback, so on module unload the trigger stays in the global
trigger list while its memory is freed by devm, leaving a dangling
entry.
Switch to devm_iio_trigger_register() so the registration is undone in
the same devm scope as the allocation.
References 3
https://git.kernel.org/stable/c/3c5eed894efd93d68d7f6a359a81ddef0e928774
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/a4f8491da9563ba6eb77969ac26fc7052114c476
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/d90f868f56a16e10eedc6552f48d99dff4d275b7
416baaa9-dc9f-4396-8d5f-8c081fb06d67