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CWE-476 空指针解引用 类漏洞列表 1557

CWE-476 空指针解引用 类弱点 1557 条 CVE 漏洞汇总,含 AI 中文分析。

CWE-476空指针解引用属于内存安全类漏洞,指程序在指针为NULL时仍尝试访问其指向的内存。攻击者通常通过构造特定输入触发空指针,导致程序崩溃引发拒绝服务,或在特定架构下利用该异常改变执行流以执行恶意代码。开发者应避免在解引用前未验证指针有效性,通过添加空值检查、使用静态分析工具检测潜在风险,并确保代码逻辑能妥善处理无效指针情况,从而从根本上消除隐患。

MITRE CWE 官方描述
CWE:CWE-476 NULL Pointer Dereference(空指针解引用) 英文:The product dereferences a pointer that it expects to be valid but is NULL. 译文:产品解引用了一个它预期为有效但实际上为 NULL 的指针。
常见影响 (2)
Availability DoS: Crash, Exit, or Restart
NULL pointer dereferences usually result in the failure of the process unless exception handling (on some platforms) is available and implemented. Even when exception handling is being used, it can still be very difficult to return the software to a safe state of operation.
Integrity, Confidentiality Execute Unauthorized Code or Commands, Read Memory, Modify Memory
In rare circumstances, when NULL is equivalent to the 0x0 memory address and privileged code can access it, then writing or reading memory is possible, which may lead to code execution.
缓解措施 (5)
Implementation For any pointers that could have been modified or provided from a function that can return NULL, check the pointer for NULL before use. When working with a multithreaded or otherwise asynchronous environment, ensure that proper locking APIs are used to lock before the check, and unlock when it has finished [REF-1484].
Requirements Select a programming language that is not susceptible to these issues.
Implementation Check the results of all functions that return a value and verify that the value is non-null before acting upon it.
Effectiveness: Moderate
Architecture and Design Identify all variables and data stores that receive information from external sources, and apply input validation to make sure that they are only initialized to expected values.
Implementation Explicitly initialize all variables and other data stores, either during declaration or just before the first usage.
代码示例 (2)
This example takes an IP address from a user, verifies that it is well formed and then looks up the hostname and copies it into a buffer.
void host_lookup(char *user_supplied_addr){ struct hostent *hp; in_addr_t *addr; char hostname[64]; in_addr_t inet_addr(const char *cp); /*routine that ensures user_supplied_addr is in the right format for conversion */ validate_addr_form(user_supplied_addr); addr = inet_addr(user_supplied_addr); hp = gethostbyaddr( addr, sizeof(struct in_addr), AF_INET); strcpy(hostname, hp->h_name); }
Bad · C
In the following code, the programmer assumes that the system always has a property named "cmd" defined. If an attacker can control the program's environment so that "cmd" is not defined, the program throws a NULL pointer exception when it attempts to call the trim() method.
String cmd = System.getProperty("cmd"); cmd = cmd.trim();
Bad · Java
CVE ID 标题 CVSS 风险等级 Published
CVE-2026-86128 Fireware OS 远程拒绝服务漏洞 — Fireware OS 8.2 High 2026-09-29
CVE-2026-102724 Libical驱逐MSRP属性空指针解引用漏洞 — NetX Duo 6.0 Medium 2026-09-29
CVE-2026-102723 MSRP属性表耗尽致空指针解引用漏洞 — NetX Duo 6.0 Medium 2026-09-29
CVE-2026-102808 PX4 Autopilot 1.17.0 空指针解引用漏洞 — PX4-Autopilot 6.5 Medium 2026-09-29
CVE-2026-102623 Kubevirt virt-controller 空指针解引用漏洞 — Red Hat OpenShift Virtualization 4 6.5 Medium 2026-09-29
CVE-2026-75805 CMP客户端吊销响应空指针解引用漏洞 — OpenSSL - - 2026-09-29
CVE-2026-95390 Wireshark 空指针解引用漏洞 — Wireshark 5.5 Medium 2026-09-29
CVE-2026-18746 Zephyr LwM2M客户端空指针解引用漏洞 — zephyr 5.9 Medium 2026-09-28
CVE-2026-100895 OpenARC libopenarc arc_parse_canon_t 空指针解引用漏洞 — OpenARC 5.3 Medium 2026-09-28
CVE-2026-100890 OpenDMARC SPF 解析器空指针解引用漏洞 — OpenDMARC 5.3 Medium 2026-09-28
CVE-2026-19888 PgBouncer SCRAM空指针解引用漏洞 — PgBouncer 7.5 High 2026-09-23
CVE-2026-42801 as_rrc 空指针检查后解引用漏洞 — Crane,Falcon 7.4 High 2026-09-23
CVE-2026-84396 InDesign 空指针解引用漏洞 — InDesign Desktop 5.5 Medium 2026-09-22
CVE-2026-76192 InDesign Desktop 空指针解引用漏洞 — InDesign Desktop 5.5 Medium 2026-09-22
CVE-2026-86056 Notepad++ NPPM_SAVESESSION空指针引用拒绝服务漏洞 — notepad-plus-plus 5.5 Medium 2026-09-22
CVE-2026-48521 Envoy ProdClusterManagerFactory空指针解引用漏洞 — envoy 5.9 Medium 2026-09-21
CVE-2026-57225 Suricata JSON/NDJSON 数据集加载空指针解引用漏洞 — suricata 3.3 Low 2026-09-18
CVE-2026-93689 WinFsp 2.2.26215 空指针解引用漏洞 — winfsp 5.5 Medium 2026-09-18
CVE-2026-93588 ImageMagick 7.1.2-31 空指针解引用漏洞 — ImageMagick 3.1 Low 2026-09-18
CVE-2026-93312 Poppler JBIG2Stream.cc 空指针解引用漏洞 — Poppler 4.3 Medium 2026-09-18
CVE-2026-76781 libxml2 nextcatalog空指针解引用漏洞 — Red Hat Hardened Images 5.5 Medium 2026-09-17
CVE-2026-92417 Open5GS PFCP模块空指针解引用漏洞 — Open5GS 6.5 Medium 2026-09-16
CVE-2026-92413 MuPDF PDF Xref加载空指针解引用漏洞 — MuPDF 4.3 Medium 2026-09-16
CVE-2026-92626 iD iDSecure 未认证拒绝服务漏洞 — iDSecure 7.5 High 2026-09-16
CVE-2026-77692 named未认证远程DoH请求崩溃漏洞 — BIND 9 7.5 High 2026-09-16
CVE-2026-76868 Netcore NR255-V 异常处理不当漏洞 — NR255-V 4.9 Medium 2026-09-15
CVE-2026-76865 Netcore NR255-V 异常处理不当漏洞 — NR255-V 4.9 Medium 2026-09-15
CVE-2026-91954 FreeRDP 异常处理不当漏洞 — FreeRDP 6.5 Medium 2026-09-15
CVE-2026-91782 GNU Binutils 资源管理错误漏洞 — Binutils 3.3 Low 2026-09-15
CVE-2026-91781 GNU Binutils 资源管理错误漏洞 — Binutils 3.3 Low 2026-09-15

CWE-476(空指针解引用) 是常见的弱点类别,本平台收录该类弱点关联的 1557 条 CVE 漏洞。