This page tracks the Ubuntu fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-9080 →

UBUNTU-CVE-2026-9080

Calling `curl_easy_pause()` within the event-based `CURLMOPT_SOCKETFUNCTION` callback triggers a use-after-free vulnerability, where libcurl attempts...

Original description

The description as published by the source.

Calling curl_easy_pause() within the event-based CURLMOPT_SOCKETFUNCTION callback triggers a use-after-free vulnerability, where libcurl attempts to store a flag using a dangling struct pointer immediately after that pointer's memory has been freed.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Ubuntu:25.10 curl

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.14.1-2ubuntu1.4"}]}]

Ubuntu:26.10 curl

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.20.0-2ubuntu11"}]}]

Ubuntu:26.04:LTS curl

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.18.0-1ubuntu2.2"}]}]

References

advisory ubuntu.com
advisory ubuntu.com
report ubuntu.com
report cve.org
report curl.se