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The "sawtooth" pattern of memory utilization: the sudden drop in used memory is a candidate symptom for a memory leak. If the memory leak is in the kernel, the operating system itself will likely fail. Computers without sophisticated memory management, such as embedded systems, may also completely fail from a persistent memory leak.
Performance and memory profiler that identifies time-intensive functions and detects memory leaks and errors. Proprietary gprof: Linux/Unix Any language supported by gcc: Several tools with combined sampling and call-graph profiling. A set of visualization tools, VCG tools, uses the Call Graph Drawing Interface (CGDI) to interface with gprof.
The press release for the leak stated that it was published "as context for its forthcoming CIA Vault 7 series." [13] In March 2017, US intelligence and law enforcement officials said to the international wire agency Reuters that they had been aware of the CIA security breach which led to Vault 7 since late 2016. Two officials said they were ...
Typical resource leaks include memory leak and handle leak, particularly file handle leaks, though memory is often considered separately from other resources. [ 1 ] Examples of resources available in limited numbers to the operating system include internet sockets , file handles , process table entries, and process identifiers (PIDs).
A handle leak is a type of software bug that occurs when a computer program asks for a handle to a resource but does not free the handle when it is no longer used. [1] If this occurs frequently or repeatedly over an extended period of time, a large number of handles may be marked in-use and thus unavailable, causing performance problems or a crash.
Even if a garbage collected programming language is used, resource exhaustion attacks are possible if the program uses memory inefficiently and does not impose limits on the amount of state used when necessary. File descriptor leaks are another common vector. Most general-purpose programming languages require the programmer to explicitly close ...
Rowhammer (also written as row hammer) is a computer security exploit that takes advantage of an unintended and undesirable side effect in dynamic random-access memory (DRAM) in which memory cells interact electrically between themselves by leaking their charges, possibly changing the contents of nearby memory rows that were not addressed in the original memory access.
Dr. Memory is an open-source memory debugger built on DynamoRIO and released under an LGPL license. [9] Dr. Memory monitors memory allocations and memory accesses using shadow memory. It detects memory-related programming errors such as accesses of uninitialized memory, accesses to freed memory, heap overflow and underflow, and memory leaks.