CVE-2025-0665: eventfd double close
Vulnerability summary
CVE-2025-0665 is a high (CVSS 7.0) vulnerability in curl. EPSS estimates a 1.33% chance of exploitation in the next 30 days, higher than 71.1% of scored vulnerabilities. 1 public exploit is recorded.
Public exploit (reference, Date unknown)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 3 · Related 3Timeline
- 05-02-2025PublishedVulnerability first disclosed.
- 15-10-2026Last modifiedVulnerability information updated.
Description
libcurl would wrongly close the same eventfd file descriptor twice when taking down a connection channel after having completed a threaded name resolve.
CVSS metrics
7 scores · 7 sources · 1 version- OSV · AlpineEcosystem advisory · calculated7.0HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H
- OSV · UbuntuEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HDiffers
- OSV · DebianEcosystem advisory · calculated7.0HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H
- OSV · WolfiEcosystem advisory · calculated7.0HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H
- OSV · ChainguardEcosystem advisory · calculated7.0HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H
- NVDNIST7.0HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H
EPSS trend
Probability
1.33%
Chance of exploitation in the next 30 days
Percentile
71%
Versus all other CVEs
30-day change
Increase +0.03 pp
From 1.30% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
1 foundExploit Reference (hackerone.com)
Maturity: unknown
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Chainguard2 products
- curl< 8.12.0-r0
- libcurl4All versions (No fix recorded)
Wolfi2 products
- curl< 8.12.0-r0
- libcurl4All versions (No fix recorded)
Alpine1 product
- curl< 8.12.0-r0
Curl1 product
- curl8.11.1
Debian1 product
- curl< 8.12.0+git20250209.89ed161+ds-1
Haxx1 product
- curl8.11.1
Opensuse1 product
- curl&distro=openSUSE Tumbleweed< 8.12.1-1.1
Ubuntu1 product
- curl< 7.68.0-1ubuntu2.25 | < 7.81.0-1ubuntu1.20 | < 8.5.0-2ubuntu10.6 | < 8.12.1-3ubuntu1
9 vendors · 16 products
