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CWE-762

メモリ管理ルーチンの不一致

Mismatched Memory Management Routines
脆弱性 作成中
JA

この製品はメモリリソースをシステムに返そうとするが、そのリソースを割り当てるために最初に使用された関数と互換性のないリリース関数を呼び出す。

この弱点は一般的に、以下のようなメモリ管理ルーチンの不一致と表現できる:

メモリ管理関数が不一致の場合、コードの実行、メモリ破壊、プログラムのクラッシュといった深刻な結果を招く可能性があります。結果や悪用のしやすさは、ルーチンの実装や管理されるオブジェクトによって異なります。

EN

The product attempts to return a memory resource to the system, but it calls a release function that is not compatible with the function that was originally used to allocate that resource.

This weakness can be generally described as mismatching memory management routines, such as:

When the memory management functions are mismatched, the consequences may be as severe as code execution, memory corruption, or program crash. Consequences and ease of exploit will vary depending on the implementation of the routines and the object being managed.

Scope: Integrity, Availability, Confidentiality / Impact: Modify Memory; DoS: Crash, Exit, or Restart; Execute Unauthorized Code or Commands
Only call matching memory management functions. Do not mix and match routines. For example, when you allocate a buffer with malloc(), dispose of the original pointer with free().
Choose a language or tool that provides automatic memory management, or makes manual memory management less error-prone.

For example, glibc in Linux provides protection against free of invalid pointers.

When using Xcode to target OS X or iOS, enable automatic reference counting (ARC) [REF-391].

To help correctly and consistently manage memory when programming in C++, consider using a smart pointer class such as std::auto_ptr (defined by ISO/IEC ISO/IEC 14882:2003), std::shared_ptr and std::unique_ptr (specified by an upcoming revision of the C++ standard, informally referred to as C++ 1x), or equivalent solutions such as Boost.
Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.

For example, glibc in Linux provides protection against free of invalid pointers.
Use a language that provides abstractions for memory allocation and deallocation.
MITRE公式ページ — CWE-762