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nickgregory.me | ||
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blog.trailofbits.com
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| | | | | By Matt Schwager Trail of Bits is excited to introduce Ruzzy, a coverage-guided fuzzer for pure Ruby code and Ruby C extensions. Fuzzing helps find bugs in software that processes untrusted input. In pure Ruby, these bugs may result in unexpected exceptions that could lead to denial of service, and in Ruby C extensions, they... | |
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binarydebt.wordpress.com
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| | | | | System call table is an array of function pointers. It is defined in kernel space as variable sys_call_table and it contains pointers to functions which implement system calls. Index of each function pointer in the array is the system call number for that syscall. These are denoted by NR_* macros in header files, such as... | |
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blog.nelhage.com
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| | | | | CVE-2007-4573 is two years old at this point, but it remains one of my favorite vulnerabilities. It was a local privilege-escalation vulnerability on all x86_64 kernels prior to v2.6.22.7. It's very simple to understand with a little bit of background, and the exploit is super-simple, but it's still more interesting than Yet Another NULL Pointer Dereference. Plus, it was the first kernel bug I wrote an exploit for, which was fun. | |
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nurkiewicz.com
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| | | Clojure is a dynamically, strongly typed programming language. It's a dialect of _Lisp_ running on the Java Virtual Machine. Lisp is 6 decades old and has a really weird syntax. That weird syntax is called _Polish prefix notation_. Basically, in every other language you've used math operators like plus or minus are infix. It means they are placed between operands. For example, `1 + 2`. In Clojure, you always put the operator (or any other function for that matter) in front. So simple addition becomes... `+ 1 2`. | ||
