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Allele Security Intelligence

@alleleintel.com
117 followers 704 following 194 posts

Allele Security Intelligence is an independent company specializing in Information Security research. Research and development are fundamental principles that guide our decision-making, enabling us to offer efficient and excellent services to our clients.

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Allele Security Intelligence @alleleintel.com · 28/09/2026
Nova turma aberta do nosso treinamento Desenvolvimento de Exploits e Segurança de Binários em Linux (Linux Binary Exploitation)! O treinamento ocorrerá na modalidade online em abril de 2027.
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Allele Security Intelligence @alleleintel.com · 24/09/2026
Would you like to learn about page cache, memory management, and how to attack and defend Linux? We will be teaching all of those topics in our Introduction to Linux Kernel Exploitation training. Limited seats, don't miss this chance.
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Allele Security Intelligence @alleleintel.com · 21/09/2026
After 6 successful runs of our Introduction to Linux Kernel Exploitation training—across both public and in-company cohorts—and a 100% positive rating from our students, we are offering it for the first time in English!
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Allele Security Intelligence @alleleintel.com · 14/09/2026
We compiled a showcase of our open-source contributions. Highlights include: - Linux kernel patches (TCP core, CAN BCM, Fanotify, RxRPC, BTRFS) - Fixes for the crash utility - Research that sparked GLIBC hardening work Much more to come!
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Allele Security Intelligence @alleleintel.com · 27/07/2026
Após o sucesso do treinamento de exploração de vulnerabilidades em binários, realizado em maio deste ano e no qual obtivemos 100% de satisfação no feedback dos alunos, na próxima semana iniciaremos nosso segundo treinamento do ano: exploração de vulnerabilidades no kernel do Linux.
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Allele Security Intelligence @alleleintel.com · 11/06/2026
Did you know there's a way to hit a breakpoint without using hardware or software breakpoints? Or how GDB patches the binary to execute an instruction? Learn more about how GDB works under the hood. Why is my shellcode being corrupted? allelesecurity.com/why-is-my-sh...
allelesecurity.com
Why is my shellcode being corrupted?
Explore the illusion GDB creates in Linux Binary Exploitation, uncovering issues with breakpoints and stack memory behavior in this detailed analysis.
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Allele Security Intelligence @alleleintel.com · 11/06/2026
We started analyzing a classic case where GDB creates the illusion that code in writable memory is corrupted. We ended up discovering two interesting behaviors of GDB.
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Allele Security Intelligence @alleleintel.com · 11/06/2026
We started analyzing a classic case where GDB creates the illusion that code in writable memory is corrupted. We ended up discovering two interesting behaviors of GDB.
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Allele Security Intelligence @alleleintel.com · 01/06/2026
Na semana passada, finalizamos a primeira turma do treinamento de exploração de binários. Essa foi a nossa estreia em formato público para esse treinamento incrível, e nós fizemos história!
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Allele Security Intelligence @alleleintel.com · 13/04/2026
We chose a vulnerability in glibc (CVE-2025-4802) to teach students registered in our binary exploitation training the importance of the libc, loader, dynamic linker, and the kernel in making the execution of a modern Linux binary possible.
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Anderson Nascimento @andersonc0d3.bsky.social · 30/03/2026
Gostaria de saber mais sobre carreiras em vulnerability research? Quer aprender detalhes sobre o Linux que provavelmente ninguém te contará? Quer aprender mais sobre segurança defensiva e ofensiva com um profissional experiente? Esta é a sua oportunidade!
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Allele Security Intelligence @alleleintel.com · 30/03/2026
Resta pouco mais de um mês para o início do treinamento Linux Binary Exploitation! Ocorrendo de 04 a 28 de maio, esta é a sua oportunidade para uma imersão em pesquisa de vulnerabilidades e arquitetura de computadores na prática, com uma profundidade que você não encontra no ensino tradicional.
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Allele Security Intelligence @alleleintel.com · 19/01/2026
AI is very useful for security research, as many researchers have already demonstrated. It will likely become—or perhaps already is—a tool that many researchers depend on. It has been very helpful for us as well.
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Allele Security Intelligence @alleleintel.com · 06/01/2026
We received an unexpected gift over Christmas and didn't let the opportunity go to waste. We successfully turned a vulnerability into a Local Privilege Escalation exploit on the latest version of a Linux distribution!
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Allele Security Intelligence @alleleintel.com · 02/12/2025
O 1º lote do nosso treinamento de Binary Exploitation em ambientes Linux encerra no dia 31 de dezembro. Garanta sua vaga com o preço atual! Depois desta data, os valores serão reajustados. Não perca esta oportunidade de aprender com os melhores treinamentos do Brasil e ainda economizar!
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Allele Security Intelligence @alleleintel.com · 16/12/2025
With H2HC on hiatus this year, the security community stepped up to create the 307 Temporary Security Conference—and we were proud to be part of it! We presented our research on vulnerabilities in the CAN BCM protocol in the Linux kernel.
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Allele Security Intelligence @alleleintel.com · 11/12/2025
A Allele Security Intelligence estará na 307 Temporary Security Conference! O evento acontece nos dias 13 e 14 de dezembro na PUC Consolação, em São Paulo.
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Allele Security Intelligence @alleleintel.com · 08/12/2025
O Mindset que Separa o Sênior do Júnior: Lições de Nelson Elhage allelesecurity.com.br/mindset-seni...
allelesecurity.com.br
O Mindset que Separa o Sênior do Júnior: Lições de Nelson Elhage
Descubra como Nelson Elhage, especialista em segurança, aborda a compreensão dos sistemas e a exploração de vulnerabilidades de forma única.
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Allele Security Intelligence @alleleintel.com · 07/12/2025
Great news for Linux kernel developers and those working with BPF (Berkeley Packet Filter) programs! A significant commit has been merged, bringing improved debugging support for BPF programs right into the familiar GDB kernel debugger.
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Allele Security Intelligence @alleleintel.com · 02/12/2025
O 1º lote do nosso treinamento de Binary Exploitation em ambientes Linux encerra no dia 31 de dezembro. Garanta sua vaga com o preço atual! Depois desta data, os valores serão reajustados. Não perca esta oportunidade de aprender com os melhores treinamentos do Brasil e ainda economizar!
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Allele Security Intelligence @alleleintel.com · 01/12/2025
The importance of diverse knowledge in vulnerability research – The transferability of knowledge allelesecurity.com/transferabil...
allelesecurity.com
Allele Security Intelligence - The importance of diverse knowledge in vulnerability research – The transferability of knowledge
To achieve an excellent and high-level career in Information Security, diverse and deep technical knowledge is indispensable.
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Anderson Nascimento @andersonc0d3.bsky.social · 26/11/2025
We (@alleleintel.com) offer efficient security services: vulnerability research (Linux, Android, Windows), reverse engineering, malware analysis, deep code auditing (systems/web apps), pentest/advanced threat simulation, and specialized training. DM or visit: allelesecurity.com
allelesecurity.com
Allele Security Intelligence
Allele Security Intelligence is an independent security company that offers consulting, intelligence, training and research services in information security.
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Allele Security Intelligence @alleleintel.com · 21/11/2025
🛡️ Domine a Segurança Ofensiva e Defensiva em Linux: Sua Jornada Começa Agora! Você quer ir além do básico e dominar as técnicas de ataque e defesa em ambientes Linux com precisão e eficiência?
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Allele Security Intelligence @alleleintel.com · 11/11/2025
Vulnerabilidade de use-after-free no subsistema CAN BCM conduzindo à divulgação de informação (CVE-2023-52922)
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Allele Security Intelligence @alleleintel.com · 06/11/2025
O super desconto para pagamentos à vista no PIX acabou, mas não perca a chance! Ainda há opções flexíveis para você garantir sua vaga:
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Allele Security Intelligence @alleleintel.com · 05/11/2025
Your Security Strategy Deserves the Best Intelligence. Get critical insights delivered to your inbox!
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Allele Security Intelligence @alleleintel.com · 02/11/2025
Lazy Sunday vibes? ☕️ We've got your reading sorted! Dive into some of our Linux kernel research we've dropped this year, from a 7-year-old vulnerability to recent contributions.
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Allele Security Intelligence @alleleintel.com · 31/10/2025
Traduzimos para português a postagem sobre a vulnerabilidade que encontramos no subsistema TCP do kernel do Linux.
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Allele Security Intelligence @alleleintel.com · 29/10/2025
Ubuntu 24.04.2 CAIU no TyphoonPWN 2025! A vulnerabilidade? Um "backport" malfeito. Entenda a raiz do problema e domine a exploração no kernel do Linux!
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Allele Security Intelligence @alleleintel.com · 27/10/2025
🔥 Última Semana de Super Desconto! Vagas Limitadas em Treinamentos Essenciais de Exploração de Vulnerabilidades. É a última semana para garantir sua vaga com o super desconto exclusivo para pagamentos à vista!
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Allele Security Intelligence @alleleintel.com · 20/10/2025
A Allele Security tem orgulho de contribuir diretamente para o kernel do Linux! Nossa equipe de pesquisa de segurança detalha as últimas correções, adições de recursos e patches que enviamos para aprimorar a estabilidade e a segurança do sistema operacional que impulsiona inúmeras organizações.
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Allele Security Intelligence @alleleintel.com · 20/10/2025
Read about our recent work and what it means for system security: allelesecurity.com/contribution...
allelesecurity.com
Our recent contributions to the Linux kernel
In this blog post, we will detail the recent issues we have reported and patched in the Linux kernel.
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Allele Security Intelligence @alleleintel.com · 20/10/2025
A Allele Security tem orgulho de contribuir diretamente para o kernel do Linux! Nossa equipe de pesquisa de segurança detalha as últimas correções, adições de recursos e patches que enviamos para aprimorar a estabilidade e a segurança do sistema operacional que impulsiona inúmeras organizações.
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Allele Security Intelligence @alleleintel.com · 20/10/2025
Allele Security is proud to contribute directly to the upstream Linux kernel. Our security research team details the latest fixes, feature additions, and patches we've submitted to enhance the stability and security of the core operating system powering countless organizations.
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Allele Security Intelligence @alleleintel.com · 07/10/2025
Preparamos o terreno para o nosso treinamento de Kernel Exploitation do ano passado com uma série de blog posts introdutórios. Este conteúdo, originalmente focado em nossos alunos, está disponível publicamente no nosso site e é a porta de entrada ideal para o tema.
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Allele Security Intelligence @alleleintel.com · 06/10/2025
From critical vulnerability discovery to advanced threat intelligence, our mission is clear: protect your business in an increasingly hostile digital world. Explore how Allele Security Intelligence delivers end-to-end cybersecurity solutions. allelesecurity.com/discover-the...
allelesecurity.com
Discover the Allele Security Intelligence Services Portfolio
Our Cybersecurity Portfolio brings together services designed from cutting-edge applied research, sustained by technical excellence, and consolidated by practical experience.
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Anderson Nascimento @andersonc0d3.bsky.social · 04/10/2025
Excelente oportunidade para aprender exploração de vulnerabilidades em binário e no kernel, com instrutores experientes em vulnerability research, diversos benefícios exclusivos e a preços acessíveis.
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Allele Security Intelligence @alleleintel.com · 03/10/2025
Para quem sonha em aprender Linux Binary Exploitation e estava esperando a melhor oportunidade: Restam SOMENTE 2 VAGAS com o super desconto para o nosso próximo treinamento! Não deixe essa chance passar.
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Allele Security Intelligence @alleleintel.com · 03/10/2025
Para quem sonha em aprender Linux Binary Exploitation e estava esperando a melhor oportunidade: Restam SOMENTE 2 VAGAS com o super desconto para o nosso próximo treinamento! Não deixe essa chance passar.
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Allele Security Intelligence @alleleintel.com · 30/09/2025
Lançamento de Novas Turmas 2026: Linux Exploitation Temos o prazer de anunciar as novas turmas dos nossos treinamentos especializados em Linux Binary Exploitation e Linux Kernel Exploitation para Maio e Agosto de 2026.
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Allele Security Intelligence @alleleintel.com · 17/09/2025
Encontrar vulnerabilidades, explorar falhas críticas, analisar ameaças e mitigar riscos: essa é a nossa especialidade. Na Allele Security Intelligence, unimos pesquisa aplicada e experiência prática para transformar desafios complexos em resiliência cibernética real.
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Anderson Nascimento @andersonc0d3.bsky.social · 24/08/2025
pc/sem.c: fully initialize sem_array before making it visible github.com/torvalds/lin... Initialize msg/shm IPC objects before doing ipc_addid() github.com/torvalds/lin...
github.com
ipc/sem.c: fully initialize sem_array before making it visible · torvalds/linux@e8577d1
ipc_addid() makes a new ipc identifier visible to everyone. New objects start as locked, so that the caller can complete the initialization after the call. Within struct sem_array, at least sma-&...
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Anderson Nascimento @andersonc0d3.bsky.social · 24/08/2025
They fixed a vulnerability in the semaphore mechanism but forgot the message queues and shared memory mechanisms. Analyzing public fixed vulnerabilities can help you learn about the inner details of the affected subsystem and sometimes even lead to new vulnerabilities being discovered.
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Anderson Nascimento @andersonc0d3.bsky.social · 24/08/2025
An example I often mention is the issues below. The three mechanisms (message queues, semaphores, and shared memory) of the IPC subsystem in the Linux kernel share code. Knowing this, if there's a vulnerability affecting one mechanism, it's worth checking if it also affects the other mechanisms.
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Anderson Nascimento @andersonc0d3.bsky.social · 24/08/2025
Attendees at my trainings or people interested in vulnerability research complain to me from time to time about how hard it is to find vulnerabilities. Yes, it's hard and requires expertise most of the time, but there are also good things publicly available.
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Anderson Nascimento @andersonc0d3.bsky.social · 24/08/2025
We (@alleleintel.com) are slowly updating our research page. It should include some LPE exploits we wrote and vulnerabilities we found in the past. Information disclosure leading to KASLR bypasses in Red Hat Enterprise Linux 8 and Samsung S10+/S9 devices allelesecurity.com/information-...
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Anderson Nascimento @andersonc0d3.bsky.social · 24/08/2025
I came across this presentation while checking if the issue highlighted below had a CVE assigned. We reported it to SSD in 2021. It was still affecting a version of Red Hat Enterprise Linux and some Samsung devices at the time we reported it. I also liked learning the term "public 0days".
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Allele Security Intelligence @alleleintel.com · 21/07/2025
We've published the research materials. Two proofs of concept required modifications after the blog post's publication. The blog post was updated accordingly. github.com/alleleintel/...
github.com
research/CVE-2023-52922 at master · alleleintel/research
Research developed by Allele Security Intelligence. - alleleintel/research
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Allele Security Intelligence @alleleintel.com · 20/06/2025
We did a presentation at Null Byte Security Conference last year entitled "The importance of a rigorous methodology in information security research". The presentation aimed to introduce security professionals to the importance of rigor in information security research, but also to other aspects.
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Allele Security Intelligence @alleleintel.com · 09/06/2025
Use-after-free vulnerability in CAN BCM subsystem leading to information disclosure (CVE-2023-52922) allelesecurity.com/use-after-fr...
allelesecurity.com
Use-after-free in CAN BCM subsystem leading to information disclosure (CVE-2023-52922)
In 2024, our research team noticed and wrote proofs of concept for a use-after-free vulnerability affecting the latest Red Hat Enterprise Linux 9 (RHEL 9). At the time, kernel version 5.14.0-503.15.1....
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