Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Transient Execution of Non-Canonical Accesses   Recent years have brought microarchitectural security intothe spotlight,
proving that modern CPUs are vulnerable toseveral classes of microarchitectural
attacks. These attacksbypass the basic isolation primitives provided by the
CPUs:process isolation, memory permissions, access checks, andso on.
Nevertheless, most of the research was focused on In-tel CPUs, with only a few
exceptions. As a result, few vulner-abilities have been found in other CPUs,
leading to specula-tions about their immunity to certain types of
microarchi-tectural attacks. In this paper, we provide a black-box anal-ysis of
one of these under-explored areas. Namely, we inves-tigate the flaw of AMD CPUs
which may lead to a transientexecution hijacking attack. Contrary to nominal
immunity,we discover that AMD Zen family CPUs exhibit transient ex-ecution
patterns similar for Meltdown/MDS. Our analysisof exploitation possibilities
shows that AMDs design deci-sions indeed limit the exploitability scope
comparing to In-tel CPUs, yet it may be possible to use them to amplify
othermicroarchitectural attacks.

4
The categories of this paper are: cond-mat
17
The categories of this paper are: q-fin
3
The categories of this paper are: physics
5
The categories of this paper are: gr-qc
28
The categories of this paper are: alg-geom
0
The categories of this paper are: hep-ph
26
The categories of this paper are: bayes-an
9
The categories of this paper are: nlin
19
The categories of this paper are: eess
16
The categories of this paper are: stat
37
The categories of this paper are: supr-con
11
The categories of this paper are: hep-lat
29
The categories of this paper are: funct-an
14
The categories of this paper are: math-ph
36
The categories of this paper are: cmp-lg
22
The categories of this paper are: chao-dyn