Undefined Behavior

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Vulnerabilities Table of Contents

ASDR Table of Contents

Description
The behavior of this function is undefined unless its control parameter is set to a specific value.

The Linux Standard Base Specification 2.0.1 for libc places constraints on the arguments to some internal functions [1]. If the constraints are not met, the behavior of the functions is not defined.

It is unusual for this function to be called directly. It is almost always invoked through a macro defined in a system header file, and the macro ensures that the following constraints are met:

The value 1 must be passed to the third parameter (the version number) of the following file system function:

__xmknod

The value 2 must be passed to the third parameter (the group argument) of the following wide character string functions:

__wcstod_internal __wcstof_internal __wcstol_internal __wcstold_internal __wcstoul_internal

The value 3 must be passed as the first parameter (the version number) of the following file system functions:

__xstat __lxstat __fxstat __xstat64 __lxstat64 __fxstat64

Risk Factors
TBD

Short example name

 * A short example description, small picture, or sample code with links

Short example name

 * A short example description, small picture, or sample code with links

Related Attacks

 * Attack 1
 * Attack 2

Related Vulnerabilities

 * Vulnerability 1
 * Vulnerabiltiy 2

Related Controls

 * Control 1
 * Control 2

Related Technical Impacts

 * Technical Impact 1
 * Technical Impact 2