🛡️ CVE-2025-0665 on Debian — curl

⚪ Unknown ✅ No Known Exploit OSV

N/A

CVSS Score

0 Low4 Medium7 High9 Critical10

Description

libcurl would wrongly close the same eventfd file descriptor twice when taking down a connection channel after having completed a threaded name resolve.

Distribution advisory

This page covers CVE-2025-0665 as tracked by Debian, for the package curl. The fix is available in version 8.12.0+git20250209.89ed161+ds-1; earlier versions remain affected.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is high, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality low, integrity low, availability high.

Affected software

DEBIAN-CVE-2025-0665 is recorded against 1 package.

curl (fixed in 8.12.0+git20250209.89ed161+ds-1)

Timeline and source

Published on 5 February 2025 and last revised on 4 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

security-tracker.debian.org (Advisory)

CVE-2025-0665 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Alpine BellSoft Base record Ubuntu

Details

Severity Unknown

CVSS Score N/A

CVSS Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H

CWE N/A

Public Exploit ✅ No

Source OSV

Published 2025-02-05

Updated 2026-08-11

Modified 2026-08-04

Fix URL N/A

Affected Packages

Software	From version	Fixed in
curl	—	8.12.0+git20250209.89ed161+ds-1

References

ADVISORY https://security-tracker.debian.org/tracker/CVE-2025-0665

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