CVE-2021-3759: memcg: charge semaphores and sem_undo objectsI don't think we need to care about this one. Embedded systems don't
usually run untrusted code...
CVE-2021-40490: A race condition was discovered inThis is already queued to 4.4 and 4.19; we can simply wait.
CVE-2021-38198: KVM: X86: MMU: Use the correct inherited permissionsKVM. Tricky code and not exactly focus on CIP code. But perhaps
someone fixes it for us :-).
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