PT-2025-5689 · Libcurl+3 · Libcurl+3

Andy Pan + 2 · Published 2025-01-23 · Updated 2026-05-18 · CVE-2025-0665

Positive Technologies (AI Summary)

CVSS v3.1

10

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions: libcurl (affected versions not specified)

Description: The issue arises when libcurl wrongly closes the same eventfd file descriptor twice after completing a threaded name resolve and taking down a connection channel. This problem occurs due to incorrect handling of the eventfd file descriptor.

Recommendations: At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

DoS

Multiple Releases of Same Resource or Handle

Integer Overflow

Weakness Enumeration

CWE-1341

CWE-190

CWE-680

Related Identifiers

ALT-PU-2025-10235

ALT-PU-2025-2425

ALT-PU-2025-2652

AZL-56692

BDU:2025-01585

BDU:2025-02320

CLEANSTART-2026-AY18527

CLEANSTART-2026-BW46578

CLEANSTART-2026-DI23929

CLEANSTART-2026-LQ42192

CLEANSTART-2026-OF85770

CVE-2025-0665

JLSEC-2026-421

MGASA-2025-0123

OPENSUSE-SU-2025:14809-1

SUSE-SU-2025:03198-1

SUSE-SU-2025:20239-1

SUSE-SU-2025_03198-1

Affected Products

Alt Linux

Red Os

Suse

Libcurl

References · 339

• 🔥 https://hackerone.com/reports/2954286 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2023-28321 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2022-27779 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2024-7264 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2025:03198-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-0500 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2022-27781 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2023-27534 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-22924 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2020-8169 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2025-0665 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-22925 · Security Note
• https://osv.dev/vulnerability/CURL-CVE-2025-0665 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2017-1000257 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2016-8619 · Security Note