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Change History

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

dmaengine: idxd: Avoid unnecessary destruction of file_ida

file_ida is allocated during cdev open and is freed accordingly
during cdev release. This sequence is guaranteed by driver file
operations. Therefore, there is no need to destroy an already empty
file_ida when the WQ cdev is removed.

Worse, ida_free() in cdev release may happen after destruction of
file_ida per WQ cdev. This can lead to accessing an id in file_ida
aft

kernel.org https://git.kernel.org/stable/c/15edb906211bf53e7b5574f7326ab734d6bff4f9 [No types assigned]

kernel.org https://git.kernel.org/stable/c/76e43fa6a456787bad31b8d0daeabda27351a480 [No types assigned]

kernel.org https://git.kernel.org/stable/c/9eb15f24a0b9b017b39cde8b8c07243676b63687 [No types assigned]