Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: PThammer: Cross-User-Kernel-Boundary Rowhammer through Implicit Accesses   Rowhammer is a hardware vulnerability in DRAM memory, where repeated access
to memory can induce bit flips in neighboring memory locations. Being a
hardware vulnerability, rowhammer bypasses all of the system memory protection,
allowing adversaries to compromise the integrity and confidentiality of data.
Rowhammer attacks have shown to enable privilege escalation, sandbox escape,
and cryptographic key disclosures. Recently, several proposals suggest
exploiting the spatial proximity between the accessed memory location and the
location of the bit flip for a defense against rowhammer. These all aim to deny
the attacker's permission to access memory locations near sensitive data. In
this paper, we question the core assumption underlying these defenses. We
present PThammer, a confused-deputy attack that causes accesses to memory
locations that the attacker is not allowed to access. Specifically, PThammer
exploits the address translation process of modern processors, inducing the
processor to generate frequent accesses to protected memory locations. We
implement PThammer, demonstrating that it is a viable attack, resulting in a
system compromise (e.g., kernel privilege escalation). We further evaluate the
effectiveness of proposed software-only defenses showing that PThammer can
overcome those.

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The categories of this paper are: patt-sol
37
The categories of this paper are: supr-con
3
The categories of this paper are: physics
34
The categories of this paper are: chem-ph
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The categories of this paper are: ao-sci
29
The categories of this paper are: funct-an
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The categories of this paper are: econ
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The categories of this paper are: bayes-an
11
The categories of this paper are: hep-lat
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The categories of this paper are: cmp-lg
10
The categories of this paper are: q-bio
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The categories of this paper are: q-fin
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The categories of this paper are: math-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: eess
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The categories of this paper are: hep-th