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Change History

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

dmaengine: idxd: Fix leaking event log memory

During the device remove process, the device is reset, causing the
configuration registers to go back to their default state, which is
zero. As the driver is checking if the event log support was enabled
before deallocating, it will fail if a reset happened before.

Do not check if the support was enabled, the check for 'idxd->evl'
being valid (only allocated if the HW capability is available) is
enough.

https://git.kernel.org/stable/c/9dfa00967e6ef43a9dd0887fe5c3a721a39da92e

https://git.kernel.org/stable/c/d94f9b0ba28a205caf95902ee88b42bdb8af83d0

https://git.kernel.org/stable/c/ee66bc29578391c9b48523dc9119af67bd5c7c0f

https://git.kernel.org/stable/c/facd0012708e942fc12890708738aebde497564e