Posted by Seth Jenkins, Project Zero Introduction I've recently been researching Pixel kernel exploitation and as part of this research I found myself with an excellent arbitrary write primitive...but without a KASLR leak. As necessity is the mother of all invention, on a hunch, I started researching the …
Posted by Jann Horn, Google Project Zero Introduction Some time in 2024, during a Project Zero team discussion, we were talking about how remote ASLR leaks would be helpful or necessary for exploiting some types of memory corruption bugs, specifically in the context of Apple devices. Coming from the …
Posted by Jann Horn, Google Project Zero Introduction In early June, I was reviewing a new Linux kernel feature when I learned about the MSG_OOB feature supported by stream-oriented UNIX domain sockets. I reviewed the implementation of MSG_OOB, and discovered a security bug (CVE-2025-38236) affecting Linux >=6.9. I …
Posted by Tim Willis, Google Project Zero In 2021, we updated our vulnerability disclosure policy to the current "90+30" model. Our goals were to drive faster yet thorough patch development, and improve patch adoption. While we’ve seen progress, a significant challenge remains: the time it takes for …
Posted by Mateusz Jurczyk, Google Project Zero In the previous blog post, we focused on the general security analysis of the registry and how to effectively approach finding vulnerabilities in it. Here, we will direct our attention to the exploitation of hive-based memory corruption bugs, i.e., those that …
Posted by Mateusz Jurczyk, Google Project Zero In the first three blog posts of this series, I sought to outline what the Windows Registry actually is, its role, history, and where to find further information about it. In the subsequent three posts, my goal was to describe in detail …
Guest post by Dillon Franke, Senior Security Engineer, 20% time on Project Zero Every second, highly-privileged MacOS system daemons accept and process hundreds of IPC messages. In some cases, these message handlers accept data from sandboxed or unprivileged processes. In this blog post, I’ll explore using Mach IPC …
Posted by Mateusz Jurczyk, Google Project Zero Welcome back to the Windows Registry Adventure! In the previous installment of the series, we took a deep look into the internals of the regf hive format. Understanding this foundational aspect of the registry is crucial, as it illuminates the design principles …
An analysis of the NSO BLASTPASS iMessage exploit Posted by Ian Beer, Google Project Zero On September 7, 2023 Apple issued an out-of-band security update for iOS: Around the same time on September 7th 2023, Citizen Lab published a blog post linking the two CVEs fixed in iOS 16 …
Posted by James Forshaw, Google Project Zero Object orientated remoting technologies such as DCOM and.NET Remoting make it very easy to develop an object-orientated interface to a service which can cross process and security boundaries. This is because they're designed to support a wide range of objects, not …
Posted by James Forshaw, Google Project Zero Back in 2021 I wrote a blog post about various ways you can build a virtual memory access trap primitive on Windows. The goal was to cause a reader or writer of a virtual memory address to halt for a significant (e …