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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-2026-91780 GNU Binutils 资源管理错误漏洞 — Binutils 3.3 Low 2026-09-15
CVE-2026-91779 GNU Binutils 资源管理错误漏洞 — Binutils 3.3 Low 2026-09-15
CVE-2026-90830 GNU Binutils 资源管理错误漏洞 — Binutils 5.3 Medium 2026-09-14
CVE-2026-90829 GNU Binutils 资源管理错误漏洞 — Binutils 5.3 Medium 2026-09-14
CVE-2026-90828 GNU Binutils 资源管理错误漏洞 — Binutils 5.3 Medium 2026-09-14
CVE-2026-53719 Envoy Gateway TCPRoute空指针解引用漏洞 — gateway 6.5 Medium 2026-09-14
CVE-2026-16702 IBM Db2 服务器空指针引用拒绝服务漏洞 — Db2 6.5 Medium 2026-09-14
CVE-2026-90802 GNU Binutils 资源管理错误漏洞 — Binutils 4.4 Medium 2026-09-14
CVE-2026-90995 SSSD 本地拒绝服务漏洞 — Red Hat Enterprise Linux 10 5.5 Medium 2026-09-14
CVE-2026-90792 GPAC 资源管理错误漏洞 — GPAC 4.3 Medium 2026-09-14
CVE-2026-90622 GNU libredwg 资源管理错误漏洞 — libredwg 3.3 Low 2026-09-14
CVE-2026-90609 GPAC 资源管理错误漏洞 — GPAC 3.3 Low 2026-09-14
CVE-2026-33970 SAMSUNG Exynos 850 异常处理不当漏洞 — Exynos 850 firmware 3.5 Low 2026-09-14
CVE-2026-15891 zephyrproject Zephyr 异常处理不当漏洞 — zephyr 7.5 High 2026-09-13
CVE-2026-90576 GPAC 资源管理错误漏洞 — GPAC 3.3 Low 2026-09-13
CVE-2026-90573 GPAC 资源管理错误漏洞 — GPAC 3.3 Low 2026-09-13
CVE-2026-90782 Systerel S2OPC OPC UA Toolkit 异常处理不当漏洞 — S2OPC 5.3 Medium 2026-09-13
CVE-2026-90485 IOBit Uninstaller 资源管理错误漏洞 — Uninstaller 5.5 Medium 2026-09-12
CVE-2026-78130 strongSwan 异常处理不当漏洞 — strongSwan 7.5 High 2026-09-11
CVE-2026-78126 strongSwan 异常处理不当漏洞 — strongSwan 5.9 Medium 2026-09-11
CVE-2026-45747 oisf Suricata 异常处理不当漏洞 — suricata 7.5 High 2026-09-10
CVE-2026-86547 ITOC mruby/c 异常处理不当漏洞 — mrubyc 6.2 Medium 2026-09-09
CVE-2026-66303 Microsoft Skype for Business Server 异常处理不当漏洞 — Skype for Business Server 2015 CU13 6.5 Medium 2026-09-08
CVE-2026-77901 Microsoft Office Word 异常处理不当漏洞 — Microsoft 365 Apps for Enterprise 8.8 High 2026-09-08
CVE-2026-70575 Microsoft Windows Schannel 异常处理不当漏洞 — Windows 11 version 23H2 5.3 Medium 2026-09-08
CVE-2026-69881 Microsoft Windows IKE Extension 异常处理不当漏洞 — Windows 10 Version 1809 7.5 High 2026-09-08
CVE-2026-69384 Microsoft Virtual Hard Disks 异常处理不当漏洞 — Windows 10 Version 1607 7.1 High 2026-09-08
CVE-2026-62762 Microsoft Active Directory Domain Services 异常处理不当漏洞 — Windows 10 Version 1607 6.5 Medium 2026-09-08
CVE-2026-72949 Microsoft Windows SMB Server 异常处理不当漏洞 — Windows 11 version 23H2 7.5 High 2026-09-08
CVE-2026-77489 Microsoft Windows Biometric Service 异常处理不当漏洞 — Windows 10 Version 1607 7.8 High 2026-09-08

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。