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CVE-2025-0665— eventfd double close

Quick assessment

Affected
curl curl
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

curl是cURL开源的一款用于从服务器传输数据或向服务器传输数据的工具。 curl 7.10.5至8.11.1版本存在安全漏洞，该漏洞源于在完成线程化名称解析后关闭连接通道时，错误地两次关闭相同的eventfd文件描述符。

AI Predicted 7.5 Difficulty: Easy EPSS 1.30% · P70

Possible ATT&CK Techniques 1 AI

T1211 · Exploitation for Stealth
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I. Basic Information for CVE-2025-0665

Vulnerability Information
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Vulnerability Title
eventfd double close
Source: CVE Program / CVE List V5
Vulnerability Description
libcurl would wrongly close the same eventfd file descriptor twice when taking down a connection channel after having completed a threaded name resolve.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
curl 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
curl是cURL开源的一款用于从服务器传输数据或向服务器传输数据的工具。 curl 7.10.5至8.11.1版本存在安全漏洞，该漏洞源于在完成线程化名称解析后关闭连接通道时，错误地两次关闭相同的eventfd文件描述符。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
curl curl 8.11.1 ~ 8.11.1 -

II. Public POCs for CVE-2025-0665

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III. Intelligence Information for CVE-2025-0665

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Vendor Advisories for CVE-2025-0665 (1)

Same Patch Batch · curl · 2025-02-05 · 3 CVEs total

CVE-2025-0167 netrc and default credential leak
CVE-2025-0725 gzip integer overflow

IV. Related Vulnerabilities

Same product: curl
Same vendor: curl

V. Comments for CVE-2025-0665

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