如果一个指针变量的值为NULL,解引用这个指针时,会导致程序崩溃(Segmentation fault)。 二、空指针解引用有什么危害? 指针操作不当会产生动态内存错误,比如内存泄漏(MemoryLeakage)、内存的重复释放、空指针解引用(NullPointer Dereference)。 其中空指针引用故障,也叫空指针解引用是一类普遍存在的内存故障,是程序设计语言...
“空指標解引用”在CWE中編號為CWE-476: NULL Pointer Dereference 來自“ ITPUB部落格 ” ,連結:http://blog.itpub.net/70000012/viewspace-2786563/,如需轉載,請註明出處,否則將追究法律責任。
NULL pointer dereference erros are common in C/C++ languages. Pointer is a programming language data type that references a location in memory. Once the value of the location is obtained by the pointer, this pointer is considered dereferenced. The NULL pointer dereference weakness occurs where appl...
CWE-476空指针解引用(NULL Pointer Dereference) 空指针引用故障(Null Pointer Dereference),也叫空指针解引用,是程序设计语言中一类常见的动态内存错误。 指针变量可以指向堆地址、静态变量和空地址单元,当引用指向空地址单元的指针变量时,就会产生空指针引用故障,有可能产生不可预见的错误,导致软件系统崩溃。 以下代码...
NULL Pointer Dereference Weakness ID: 476 (Weakness Base) Status: Draft Description Description Summary A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. Time of Introduction Implementation ...
[14] CWE-476 NULL Pointer Dereference [15] CWE-732 Incorrect Permission Assignment for Critical Resource [16] CWE-434 Unrestricted Upload of File with Dangerous Type [17] CWE-611 Improper Restriction of XML External Entity Reference [18] CWE-94 Improper Control of Generation of Code ('Code In...
Apart from the previously noted weaknesses, in the third place is “NULL Pointer Dereference (CWE-476)”, which often occurs in the Linux kernel. These occurrences are sometimes a resultant weakness from “Operation on a Resource after Expiration or Release (CWE-672),“ which in turn are resu...
NULL Pointer Dereference Improper Authentication Unrestricted Upload of File with Dangerous Type Incorrect Permission Assignment for Critical Resource Improper Control of Generation of Code (“Code Injection”) Insufficiently Protected Credentials Improper Restriction of XML External Entity Reference Use of Hard...
NULL Pointer Dereference 15 11 4▲ 5 CWE-94 Improper Control of Generation of Code ('Code Injection') 28 25 3▲ The biggest downshifts:# CWE ID Name Position in 2021 Position in 2022 Annual change 1 CWE-522 Insufficiently Protected Credentials 21 38 17▼ 2 CWE...
编辑 工具功能 cwe_checker What is cwe_checker? cwe_checker is a suite of checks to detect common bug classes such as Null pointer dereferences and buffer overflows. These bug classes are formally known asCommon Weakness Enumerations(CWEs). ...