In the Linux kernel, the following vulnerability has been resolved:
block: mtip32xx: synchronize ioctls with device removal
The ioctl handlers only test REMOVE_PENDING before entering
mtip_hw_ioctl(). Removal can set that bit immediately afterwards and free
dd->port in mtip_hw_exit() while an ioctl still dereferences it. An already
open block device can reach the handlers while del_gendisk() is in
progress.
Serialize both native and compat ioctls with removal. Set REMOVE_PENDING
before taking the mutex so new callers fail after an in-flight ioctl has
drained, and hold the mutex until the port has been torn down.
Ссылки 6
https://git.kernel.org/stable/c/4609e0e0be709e974bec9b52c5022136d25e97d3
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https://git.kernel.org/stable/c/521afbd936ac256b7531470b0b9aa96abf9cd853
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/68940f841d013192086a0f6d7cfbac2cd079e228
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/8283049aa5fcb4e84b2b2928b2888903bb8ee12e
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https://git.kernel.org/stable/c/8a7799597bd683b6bc251fe2edfa9fd1db568a3a
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/b389dc35a55713ac24a145741e76196fea1663bc
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