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Your first quantum programming (24th Mar 2023)
Preface: How much does a 1 qubit quantum computer cost? Commercial quantum computers like D-Wave One with 50 qubits – $10,000,000. D-Wave systems use a process called quantum annealing to search for solutions to a problem. Background: The Microsoft Quantum Development Kit offers durable quantum application development on hardware-accelerated compute resources. Program your quantum algorithms…
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Linux kernel BUG: About hugetlb[.]c in mm folder (22nd Mar 2023)
Preface: Enabling HugePages makes it possible for the operating system to support memory pages greater than the default (usually 4 KB). Using very large page sizes can improve system performance by reducing the amount of system resources required to access page table entries. Background: For Red Hat Enterprise Linux systems, it is recommend configure HugeTLB…
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Sometimes, cyber security incidents are caused by Java script. What type of Java script is claimed to be dangerous? (22nd Mar 2023)
Preface: Vanilla JS is faster than other frameworks. It provides better response than all other front-end frameworks. In additional, it renders UI up to 30 times faster than React JS. In Vanilla, handling UI state is simple.React is a free and open source front-end JavaScript tool library for building user interfaces based on UI components.…
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CVE-2023-28425 : About Redis (20th Mar 2023)
Preface: The word Database, inspire you thinking a large volume of database. For example, a structured set of data held in a computer, especially one that is accessible in various ways. Do a transformation of design, bring the data which going to use to a specify memory. Compare to disk access storage, direct access to…
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CVE-2023-0361 – About RSA ClientKeyExchange messages in GnuTLS (19th Mar 2023)
Preface: As a computer end user. When there is a vulnerability, the only way is to patch it according to the official announcement.GnuTLS is a secure communications library implementing the SSL, TLS and DTLS protocols and technologies around them. It provides a simple C language API to access the secure communications protocols.Remark: If OpenSSL is…
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About CVE-2023-22881 and CVE-2023-22882 : malicious UDP receive by client cause a denial of service (16th Mar 2023).
Preface: Make sure to use the STUN message format specified in standard, to perform the MESSAGE-INTEGRITY computation. This protocol uses Simple Traversal of UDP through NAT (STUN) binding request and response messages for connectivity checks between the two endpoints. Background: Most attackers utilize UDP to launch amplification attacks since reflection of traffic with spoofed IP…
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Staying alert of opensips vulnerabilities (16th Mar 2023)
Preface: SIP protocol take the stage of traditional telephony system. We cannot lack of this protocol today. Background: The Session Initiation Protocol is a signaling protocol that enables the Voice Over Internet Protocol (VoIP) by defining the messages sent between endpoints and managing the actual elements of a call. SIP supports voice calls, video conferencing,…
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Have you upgraded your Linux kernel? (15th Mar 2023)
Preface: Blue screen of death (BSOD) is error display on Windows commonly. In Linux, it is unlikely and uncommon, but is it possible? Background: As the only copyright holder to the GPL-covered components of the software, you are free to add exceptions and additional terms to the GPLv3, as described in section 7 of that…
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ndctl: release v76.1, have you update yet? (14th Mar 2023)
Preface: Preface: Advantages of NVDIMMs in servers. NVDIMMs provide high-speed DRAM performance coupled with flash-backed persistent storage. Aside from providing an additional memory tier in servers, NVDIMM persistence allows applications to continue processing I/O traffic during planned or unexpected system failures. Background: Persistent Memory (PM) is a type of Non-Volatile Memory (NVM). The ndctl utility…
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Ccache technical matter , whether it will bring your attention? (13th Mar 2023)
Preface: Multiphysics Object-Oriented Simulation Environment (MOOSE) – An open-source, parallel finite element framework. Background: ccache is a compiler cache that speeds up recompilation by caching previous compilations and detecting when the same compilation is being done again. ccache can deliver significant speedups when developing MOOSE-based applications, or working on the framework itself.Multiphysics Object Oriented Simulation…