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CWE-416 释放后使用 类漏洞列表 3703

CWE-416 释放后使用 类弱点 3703 条 CVE 漏洞汇总,含 AI 中文分析。

CWE-416 释放后使用是一种内存安全漏洞,指程序在释放内存后仍引用该内存区域。攻击者常利用此缺陷,通过重新分配内存并控制其内容,诱导程序执行恶意代码或读取敏感数据,从而引发远程代码执行或信息泄露。开发者应避免此类风险,确保在指针置空前彻底解除引用,采用智能指针等自动内存管理机制,并严格验证内存生命周期,防止悬空指针操作。

MITRE CWE 官方描述
CWE:CWE-416 Use After Free 英文:产品在内存被释放后重新使用或引用该内存。在此之后,该内存可能会被重新分配并保存到另一个指针中,而原始指针则指向新分配内存中的某个位置。由于内存“属于”操作新指针的代码,因此使用原始指针的任何操作均不再有效。
常见影响 (4)
Integrity Modify Memory
The use of previously freed memory may corrupt valid data, if the memory area in question has been allocated and used properly elsewhere.
Availability DoS: Crash, Exit, or Restart
If chunk consolidation occurs after the use of previously freed data, the process may crash when invalid data is used as chunk information.
Confidentiality Read Memory
Read operations on freed memory can sometimes leak sensitive information instead of causing a crash
Integrity, Confidentiality, Availability Execute Unauthorized Code or Commands
If malicious data is entered before chunk consolidation can take place, it may be possible to take advantage of a write-what-where primitive to execute arbitrary code. If the newly allocated data happens to hold a class, in C++ for example, various function pointers may be scattered within the heap …
缓解措施 (2)
Architecture and Design Choose a language that provides automatic memory management.
Implementation When freeing pointers, be sure to set them to NULL once they are freed. However, the utilization of multiple or complex data structures may lower the usefulness of this strategy.
Effectiveness: Defense in Depth
代码示例 (2)
The following example demonstrates the weakness.
#include <stdio.h> #include <unistd.h> #define BUFSIZER1 512 #define BUFSIZER2 ((BUFSIZER1/2) - 8) int main(int argc, char **argv) { char *buf1R1; char *buf2R1; char *buf2R2; char *buf3R2; buf1R1 = (char *) malloc(BUFSIZER1); buf2R1 = (char *) malloc(BUFSIZER1); free(buf2R1); buf2R2 = (char *) malloc(BUFSIZER2); buf3R2 = (char *) malloc(BUFSIZER2); strncpy(buf2R1, argv[1], BUFSIZER1-1); free(buf1R1); free(buf2R2); free(buf3R2); }
Bad · C
The following code illustrates a use after free error:
char* ptr = (char*)malloc (SIZE); if (err) { abrt = 1; free(ptr); } ... if (abrt) { logError("operation aborted before commit", ptr); }
Bad · C
CVE ID 标题 CVSS 风险等级 Published
CVE-2026-91790 Foxit PDF编辑器/阅读器UAF信息泄露漏洞 — Foxit PDF Editor 7.8 High 2026-09-23
CVE-2026-91791 Foxit PDF Editor 注解释放后使用漏洞 — Foxit PDF Editor 7.8 High 2026-09-23
CVE-2026-91792 Foxit PDF编辑器/阅读器释放后使用远程代码执行漏洞 — Foxit PDF Editor 7.8 High 2026-09-23
CVE-2026-91793 Foxit PDF Editor/Reader 信息泄露漏洞 — Foxit PDF Editor 7.8 High 2026-09-23
CVE-2026-91799 Foxit Editor/Reader 重置表单释放后使用漏洞 — Foxit PDF Editor 7.8 High 2026-09-23
CVE-2026-91805 Foxit PDF编辑器/阅读器释放后使用漏洞 — Foxit PDF Editor 7.8 High 2026-09-23
CVE-2026-91806 Foxit PDF编辑器阅读器信息泄露漏洞 — Foxit PDF Editor 7.8 High 2026-09-23
CVE-2026-91816 Foxit PDF Editor/Reader AcroForm 远程代码执行漏洞 — Foxit PDF Editor 7.8 High 2026-09-23
CVE-2026-91818 Foxit PDF 批注释放后使用远程代码执行漏洞 — Foxit PDF Editor 7.8 High 2026-09-23
CVE-2026-91809 Foxit PDF 编辑器/阅读器注解信息泄露漏洞 — Foxit PDF Editor 7.8 High 2026-09-23
CVE-2026-8849 RTI Connext 释放后使用文件操作漏洞 — Connext Professional 7.7 High 2026-09-22
CVE-2026-74766 Perl Net::IDN::Punycode 2.590 前堆溢出 - - 2026-09-22
CVE-2026-73512 Envoy: use-after-free in QUIC on internal redirects — envoy 7.5 High 2026-09-21
CVE-2026-50572 Envoy: ext_authz - RawHttpClientImpl onSuccess 0x0 segfault — envoy 5.9 Medium 2026-09-21
CVE-2026-94084 Suricata 8.0.7前Http2ThreadMultiBuf释放后使用漏洞 — Suricata 9.4 Critical 2026-09-20
CVE-2026-94055 Exim 4.100.1前GnuTLS配置下存在UAF漏洞 — Exim 3.7 Low 2026-09-19
CVE-2026-88097 微软 Edge 浏览器提升权限漏洞 — Microsoft Edge (Chromium-based) 8.1 High 2026-09-18
CVE-2026-93586 ImageMagick 7.1.2-31 前 Use-After-Free 漏洞 — ImageMagick 2.9 Low 2026-09-18
CVE-2026-93373 Chrome 153.0.8010.52 前扩展插件释放后使用 — Chrome - - 2026-09-17
CVE-2026-93382 Chrome前153.0.8010.52 PDFium释放后使用 — Chrome - - 2026-09-17
CVE-2026-93374 Chrome 153 Dawn 释放后使用致代码执行 — Chrome - - 2026-09-17
CVE-2026-92474 GPAC Proto Link 释放后使用漏洞 — GPAC 3.3 Low 2026-09-16
CVE-2026-92473 GPAC BIFS gf_sg_command_del 释放后使用漏洞 — GPAC 3.3 Low 2026-09-16
CVE-2026-92472 GPAC MP4Box base_scenegraph.c 释放后使用漏洞 — GPAC 3.3 Low 2026-09-16
CVE-2026-92627 HDF5 堆内存释放后使用漏洞 — HDF5 4.6 Medium 2026-09-16
CVE-2026-19666 dns64 过滤器 query_addnoqnameproof 函数释放后使用漏洞 — BIND 9 7.5 High 2026-09-16
CVE-2026-19662 qpcache 递归解析器 NOQNAME 释放后使用漏洞 — BIND 9 5.9 Medium 2026-09-16
CVE-2026-82720 DoH 流清理代码路径使用后再释放漏洞 — Unbound 5.9 Medium 2026-09-16
CVE-2026-78227 DoQ 流重置重传中的释放后使用漏洞 — Unbound 6.5 Medium 2026-09-16
CVE-2026-85893 Microsoft Edge (Chromium) 权限提升漏洞 — Microsoft Edge (Chromium-based) 8.8 High 2026-09-15

CWE-416(释放后使用) 是常见的弱点类别,本平台收录该类弱点关联的 3703 条 CVE 漏洞。