{"id":"UBUNTU-CVE-2026-9080","details":"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.","modified":"2026-07-08T09:45:47.517553690Z","published":"2026-06-24T14:00:00Z","related":["USN-8487-1"],"upstream":["CVE-2026-9080"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-9080"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-9080"},{"type":"REPORT","url":"https://curl.se/L7HzKXisfJ/CVE-2026-9080.md"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8487-1"}],"affected":[{"package":{"name":"curl","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/curl?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.14.1-2ubuntu1.4"}]}],"versions":["8.12.1-3ubuntu1","8.13.0-5ubuntu1","8.14.1-1ubuntu2","8.14.1-1ubuntu3","8.14.1-2ubuntu1","8.14.1-2ubuntu1.1","8.14.1-2ubuntu1.2","8.14.1-2ubuntu1.3"],"ecosystem_specific":{"binaries":[{"binary_name":"curl","binary_version":"8.14.1-2ubuntu1.4"},{"binary_version":"8.14.1-2ubuntu1.4","binary_name":"libcurl3t64-gnutls"},{"binary_name":"libcurl4t64","binary_version":"8.14.1-2ubuntu1.4"}],"availability":"No subscription required","priority_reason":"Upstream defined this as low severity"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-9080.json"}},{"package":{"name":"curl","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/curl?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.18.0-1ubuntu2.2"}]}],"versions":["8.14.1-2ubuntu1","8.17.0-1ubuntu1","8.18.0-1ubuntu1","8.18.0-1ubuntu2","8.18.0-1ubuntu2.1"],"ecosystem_specific":{"priority_reason":"Upstream defined this as low severity","binaries":[{"binary_name":"curl","binary_version":"8.18.0-1ubuntu2.2"},{"binary_name":"libcurl3t64-gnutls","binary_version":"8.18.0-1ubuntu2.2"},{"binary_version":"8.18.0-1ubuntu2.2","binary_name":"libcurl4t64"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-9080.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L"},{"type":"Ubuntu","score":"low"}]}