In _DevmemXReservationPageAddress of devicemem_server.c, there is a possible use-after-free due to improper casting. This could lead to local escalation of privilege in the kernel with no additional execution privileges needed. User interaction is not needed for exploitation.
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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