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地图 / Data race in Curl_dnscache_add_negative() corrupts shared DNS cache — heap corruption and double-free when using CURLOPT_SHARE with CURL_LOCK_DATA_DNS

Data race in Curl_dnscache_add_negative() corrupts shared DNS cache — heap corruption and double-free when using CURLOPT_SHARE with CURL_LOCK_DATA_DNS

业务逻辑 / Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') / #3645361

厂商
curl
严重程度
低危
赏金
—
弱点
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
研究员
@intrax
披露日期
2026-04-04
资产
https://github.com/curl/curl
CVE
—

该报告还没有中文解读。

原文摘录

摘自原文(8297 字符中的一小部分)
Data race in Curl_dnscache_add_negative() corrupts shared DNS cache — heap corruption and double-free when using CURLOPT_SHARE with CURL_LOCK_DATA_DNS
原文中的代码
CURLcode Curl_dnscache_add_negative(struct Curl_easy *data,
                                    uint8_t dns_queries,
                                    const char *host,
                                    uint16_t port)
{
  struct Curl_dnscache *dnscache = dnscache_get(data);
  // ...

  // BUG: …

默认不展示报告全文。以上为简短摘录,完整复现过程请阅读原文。版权归研究员与 curl 所有。

时间线

  • 报告提交
  • 公开披露
阅读 HackerOne 原文 ↗作者 @intrax · 版权归作者与 curl 所有

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