LANG.STRUCT.UPD : Unchecked Parameter Dereference

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CodeSonar^® 9.2p0

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LANG.STRUCT.UPD : Unchecked Parameter Dereference

Summary

A function parameter is dereferenced without an initial NULL check, which could lead to a NULL pointer dereference.

Properties

CWE

CWE:476

NULL Pointer Dereference

CWE:822

Untrusted Pointer Dereference

TS17961

TS17961:5.14-nullref

Dereferencing an out-of-domain pointer

CERT-C

CERT-C:API00-C

Functions should validate their parameters

CERT-C:EXP34-C

Do not dereference null pointers

JSF++

JSF++:174

The null pointer shall not be de-referenced.

POW10

POW10:7

Check the return value of non-void functions, and check the validity of function parameters.

JPL

JPL:15

Check the validity of values passed to functions.

OWASP-2025

OWASP-2025:A10

Mishandling of Exceptional Conditions

Example

char lang_struct_upd(char *inchar)
{
    char c;
    c = *inchar; /* 'Unchecked Parameter Dereference' warning issued here */
    return c;
}

Relevant Configuration File Parameters

The following configuration file parameters affect checks for this warning class.