MISC.PATHLENGTH : MAX_PATH上限値の超過

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CodeSonar^® 9.2p0

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CodeSecure Inc

MISC.PATHLENGTH : MAX_PATH上限値の超過

要旨

パス操作関数に渡される引数が、Windows APIによって定められたパラメータの MAX_PATH のサイズを超えています。

プロパティ

MisraC2025

MisraC2025:D.4.11

The validity of values passed to library functions shall be checked

MisraC2023

MisraC2023:D.4.11

The validity of values passed to library functions shall be checked

Misra2012

Misra2012:D.4.11

The validity of values passed to library functions shall be checked

Misra2004

Misra2004:20.3

The validity of values passed to library functions shall be checked

MisraC++2023

MisraC++2023:0.3.2

A function call shall not violate the function's preconditions

CWE

CWE:687

Function Call With Incorrectly Specified Argument Value

Insecure design

Insecure Design

例

#include <shlwapi.h>
#include <string.h>

void f(void)
{
    char buf[1024], buf2[1024];
    memset( buf, 'a', 512 );
    memset( buf2, 'a', 512 );
    buf[512] = 0;
    buf2[512] = 0;
    PathAppendA( buf, buf2 );
}

ワーニングを引き起こす関数

CodeSonar ships with library models that allow it to functions such as Win32 PathMakeUniqueName() that take one or more arguments whose length should not exceed MAX_PATH. If one of these functions is called with a path argument longer than MAX_PATH, a warning will be issued.

If you have created a custom library model for some function f() in terms of one of these existing models, calls to f() will also be capable of triggering MAX_PATH Exceeded warnings.

関連のある設定ファイルパラメータ

設定ファイルの以下のパラメータがこのワーニングクラスのチェックに影響します。