Concept

Darwin (informatique)

Publications associées (10)

Midas: Systematic Kernel TOCTTOU Protection

Mathias Josef Payer, Atri Bhattacharyya, Uros Tesic

Double-fetch bugs are a plague across all major operating system kernels. They occur when data is fetched twice across the user/kernel trust boundary while allowing concurrent modification. Such bugs enable an attacker to illegally access memory, cause den ...

2022

Attestable Software Versioning for Stateful Confidential Computing

Edouard Bugnion, Charly Nicolas Lucien Castes

Trusted execution environments enable the creation of confidential and attestable enclaves that exclude the platform and service providers from the trusted base. From its initial attestable state, a stateful enclave such as a confidential database can hold ...

2022

NrOS: Effective Replication and Sharing in an Operating System

Sanidhya Kashyap, Ankit Bhardwaj

Writing a correct operating system kernel is notoriously hard. Kernel code requires manual memory management and type-unsafe code and must efficiently handle complex, asynchronous events. In addition, increasing CPU core counts further complicate kernel de ...

USENIX ASSOC2021

Robust discrete choice models with t-distributed kernel errors

Michel Bierlaire, Thomas Gasos, Prateek Bansal

Models that are robust to aberrant choice behaviour have received limited attention in discrete choice analysis. In this paper, we analyse two robust alternatives to the multinomial probit (MNP) model. Both alternative models belong to the family of robit ...

EPFL2020

Improving systems software security through program analysis and instrumentation

Volodymyr Kuznetsov

Security and reliability bugs are prevalent in systems software. Systems code is often written in low-level languages like C/C++, which offer many benefits but also delegate memory management and type safety to programmers. This invites bugs that cause cra ...

EPFL2016

Code-Pointer Integrity

George Candea, Mathias Josef Payer, Volodymyr Kuznetsov

Systems code is often written in low-level languages like C/C++, which offer many benefits but also delegate memory management to programmers. This invites memory safety bugs that attackers can exploit to divert control flow and compromise the system. Depl ...

2014

Synchronizing Code Execution on Ultra-Low-Power Embedded Multi-Channel Signal Analysis Platforms

David Atienza Alonso, Andreas Peter Burg, Giovanni Ansaloni, Ruben Braojos Lopez, Jeremy Hugues-Felix Constantin, Ahmed Yasir Dogan

Embedded biosignal analysis involves a considerable amount of parallel computations, which can be exploited by employing low-voltage and ultra-low-power (ULP) parallel computing architectures. By allowing data and instruction broadcasting, single instructi ...

2013

Testing Closed-Source Binary Device Drivers with DDT

George Candea, Vitaly Chipounov, Volodymyr Kuznetsov

DDT is a system for testing closed-source binary device drivers against undesired behaviors, like race conditions, memory errors, resource leaks, etc. One can metaphorically think of it as a pesticide against device driver bugs. DDT combines virtualization ...

2010

Reverse-Engineering Drivers for Safety and Portability

George Candea, Vitaly Chipounov

Device drivers today lack two important properties: guaranteed safety and cross-platform portability. We present an approach to incrementally achieving these properties in drivers, without requiring any changes in the drivers or operating system kernels. W ...

2008

Ultrabright synchrotron source elettra: First period of operation

Giorgio Margaritondo

ELETTRA, the brightest source of soft-X-ray in Europe and one of the two brightest in the world, is officially operating as a user facility since the summer of 1995. The source and the operating beam lines have reached and surpassed the design performances ...

1997

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