182 vulnerabilities classified as CWE-415 (双重释放). AI Chinese analysis included.
CWE-415 represents a critical memory management weakness where a software product erroneously invokes the free function on the same memory address twice. This flaw typically arises from improper pointer handling or logic errors in deallocation sequences, leading to undefined behavior that attackers can exploit to achieve arbitrary code execution or cause denial-of-service conditions. By corrupting the heap’s internal metadata, a double free allows adversaries to manipulate memory allocation structures, potentially overwriting critical data or hijacking control flow. To prevent this vulnerability, developers must ensure that pointers are set to NULL immediately after being freed, thereby preventing subsequent deallocation attempts. Additionally, implementing robust memory management practices, such as using smart pointers in C++ or employing static analysis tools to detect duplicate free calls, significantly reduces the risk of this dangerous error occurring in production environments.
char* ptr = (char*)malloc (SIZE); ... if (abrt) { free(ptr); } ... free(ptr);#include <stdio.h> #include <unistd.h> #define BUFSIZE1 512 #define BUFSIZE2 ((BUFSIZE1/2) - 8) int main(int argc, char **argv) { char *buf1R1; char *buf2R1; char *buf1R2; buf1R1 = (char *) malloc(BUFSIZE2); buf2R1 = (char *) malloc(BUFSIZE2); free(buf1R1); free(buf2R1); buf1R2 = (char *) malloc(BUFSIZE1); strncpy(buf1R2, argv[1], BUFSIZE1-1); free(buf2R1); free(buf1R2); }| CVE ID | Title | CVSS | Severity | Published |
|---|---|---|---|---|
| CVE-2018-0101 | 多款Cisco产品Adaptive Security Appliance Software 安全漏洞 — Cisco Adaptive Security Appliance | 9.8 | - | 2018-01-29 |
| CVE-2017-10950 | Bitdefender Total Security bdfwfpf驱动程序安全漏洞 — Bitdefender Total Security | 7.8 | - | 2017-08-29 |
Vulnerabilities classified as CWE-415 (双重释放) represent 182 CVEs. The CWE taxonomy describes the weakness; review individual CVEs for product-specific impact.