Improper Resource Management in libcurl Affects Multiple Versions
CVE-2025-0665

9.8CRITICAL

Key Information:

Vendor

Curl

Status
Curl
Vendor
CVE Published:
5 February 2025

What is CVE-2025-0665?

The libcurl library improperly manages resource closure, specifically related to eventfd file descriptors. In situations following a threaded name resolution process, it is possible for libcurl to mistakenly close the same eventfd descriptor twice when shutting down a connection channel. This issue could lead to unexpected behaviors or denial of service under specific circumstances.

Affected Version(s)

curl 8.11.1

References

https://curl.se/docs/CVE-2025-0665.json
https://curl.se/docs/CVE-2025-0665.html
https://hackerone.com/reports/2954286

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Christian Heusel
Andy Pan
.