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Since its public introduction in the mid-2010s, the Row Hammer (RH) phenomenon has drawn significant attention from the research community due to its security implications. Although many RH-protection schemes have been proposed by processor…

密码学与安全 · 计算机科学 2021-12-28 Michael Jaemin Kim , Jaehyun Park , Yeonhong Park , Wanju Doh , Namhoon Kim , Tae Jun Ham , Jae W. Lee , Jung Ho Ahn

Rowhammer is a hardware security vulnerability at the heart of every system with modern DRAM-based memory. Despite its discovery a decade ago, comprehensive defenses remain elusive, while the probability of successful attacks grows with…

密码学与安全 · 计算机科学 2024-09-25 Anish Saxena , Walter Wang , Alexandros Daglis

Rowhammer is a read disturbance vulnerability in modern DRAM that causes bit-flips, compromising security and reliability. While extensively studied on Intel and AMD CPUs with DDR and LPDDR memories, its impact on GPUs using GDDR memories,…

密码学与安全 · 计算机科学 2025-07-14 Chris S. Lin , Joyce Qu , Gururaj Saileshwar

As Dynamic Random Access Memories (DRAM) scale, they are becoming increasingly susceptible to Row Hammer. By rapidly activating rows of DRAM cells (aggressor rows), attackers can exploit inter-cell interference through Row Hammer to flip…

密码学与安全 · 计算机科学 2024-03-19 Jeonghyun Woo , Gururaj Saileshwar , Prashant J. Nair

DRAM chips are vulnerable to read disturbance phenomena (e.g., RowHammer and RowPress), where repeatedly accessing or keeping open a DRAM row causes bitflips in nearby rows. Attackers leverage RowHammer bitflips in real systems to take over…

RowHammer is a major read disturbance mechanism in DRAM where repeatedly accessing (hammering) a row of DRAM cells (DRAM row) induces bitflips in physically nearby DRAM rows (victim rows). To ensure robust DRAM operation, state-of-the-art…

The Rowhammer bug allows unauthorized modification of bits in DRAM cells from unprivileged software, enabling powerful privilege-escalation attacks. Sophisticated Rowhammer countermeasures have been presented, aiming at mitigating the…

Rowhammer is a hardware-based bug that allows the attacker to modify the data in the memory without accessing it, just repeatedly and frequently accessing (or hammering) physically adjacent memory rows. So that it can break the memory…

密码学与安全 · 计算机科学 2019-01-14 Xiaoxuan Lou , Fan Zhang , Zheng Leong Chua , Zhenkai Liang , Yueqiang Cheng , Yajin Zhou

Aggressive memory density scaling causes modern DRAM devices to suffer from RowHammer, a phenomenon where rapidly activating a DRAM row can cause bit-flips in physically-nearby rows. Recent studies demonstrate that modern DRAM chips,…

We provide an overview of recent developments and future directions in the RowHammer vulnerability that plagues modern DRAM (Dynamic Random Memory Access) chips, which are used in almost all computing systems as main memory. RowHammer is…

密码学与安全 · 计算机科学 2023-02-06 Onur Mutlu , Ataberk Olgun , A. Giray Yağlıkçı

Cloud providers are concerned that Rowhammer poses a potentially critical threat to their servers, yet today they lack a systematic way to test whether the DRAM used in their servers is vulnerable to Rowhammer attacks. This paper presents…

密码学与安全 · 计算机科学 2020-03-11 Lucian Cojocar , Jeremie Kim , Minesh Patel , Lillian Tsai , Stefan Saroiu , Alec Wolman , Onur Mutlu

A fundamental assumption in software security is that a memory location can only be modified by processes that may write to this memory location. However, a recent study has shown that parasitic effects in DRAM can change the content of a…

密码学与安全 · 计算机科学 2016-04-06 Daniel Gruss , Clémentine Maurice , Stefan Mangard

In the past decade, many vulnerabilities were discovered in microarchitectures which yielded attack vectors and motivated the study of countermeasures. Further, architectural and physical imperfections in DRAMs led to the discovery of…

密码学与安全 · 计算机科学 2024-04-15 Andrew J. Adiletta , M. Caner Tol , Yarkın Doröz , Berk Sunar

Rowhammer is a security vulnerability that allows unauthorized attackers to induce errors within DRAM cells. To prevent fault injections from escalating to successful attacks, a widely accepted mitigation is implementing fault checks on…

密码学与安全 · 计算机科学 2024-06-12 Kemal Derya , M. Caner Tol , Berk Sunar

DRAM is the primary technology used for main memory in modern systems. Unfortunately, as DRAM scales down to smaller technology nodes, it faces key challenges in both data integrity and latency, which strongly affect overall system…

硬件体系结构 · 计算机科学 2023-03-15 Hasan Hassan

RowHammer is a circuit-level DRAM vulnerability where repeatedly accessing (i.e., hammering) a DRAM row can cause bit flips in physically nearby rows. The RowHammer vulnerability worsens as DRAM cell size and cell-to-cell spacing shrink.…

A fundamental assumption in software security is that memory contents do not change unless there is a legitimate deliberate modification. Classical fault attacks show that this assumption does not hold if the attacker has physical access.…

密码学与安全 · 计算机科学 2018-05-15 Moritz Lipp , Misiker Tadesse Aga , Michael Schwarz , Daniel Gruss , Clémentine Maurice , Lukas Raab , Lukas Lamster

The security of applications hinges on the trustworthiness of the operating system, as applications rely on the OS to protect code and data. As a result, multiple protections for safeguarding the integrity of kernel code and data are being…

密码学与安全 · 计算机科学 2019-05-16 Salessawi Ferede Yitbarek , Todd Austin

Recent advancements in side-channel attacks have revealed the vulnerability of modern Deep Neural Networks (DNNs) to malicious adversarial weight attacks. The well-studied RowHammer attack has effectively compromised DNN performance by…

硬件体系结构 · 计算机科学 2024-12-04 Ranyang Zhou , Jacqueline T. Liu , Sabbir Ahmed , Shaahin Angizi , Adnan Siraj Rakin

Monitoring kernel object modification of virtual machine is widely used by virtual-machine-introspection-based security monitors to protect virtual machines in cloud computing, such as monitoring dentry objects to intercept file operations,…

密码学与安全 · 计算机科学 2019-02-15 Dongyang Zhan , Huhua Li , Lin Ye , Hongli Zhang , Binxing Fang , Xiaojiang Du