A use-after-free vulnerability exists in libcurl when an application configures an HTTP/2 stream-dependency tree via `CURLOPT_STREAM_DEPENDS` or `CURLOPT_STREAM_DEPENDS_E`, subsequently invokes `curl_easy_reset()`, and finally terminates the handle with `curl_easy_cleanup()`. During this final cleanup phase, libcurl attempts to access and modify an internal structure that was already freed during the reset operation.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade curl | Jul 6, 2026 | Jul 3, 2026 |
| Amazon_linux_2023 | — | Upgrade curl-minimal-debuginfoUpgrade libcurl-develUpgrade curl-debuginfoUpgrade libcurlUpgrade libcurl-minimal-debuginfoUpgrade curl-debugsourceUpgrade curl-minimalUpgrade curlUpgrade libcurl-minimalUpgrade libcurl-debuginfo | Sep 30, 2026 | Jul 3, 2026 |
| Ibm Aix | — | Apply the fix or workaround for curl_advisory11 | Jul 28, 2026 | Jul 28, 2026 |
| Oracle_linux | — | Upgrade libcurl-minimalUpgrade libcurl-develUpgrade libcurlUpgrade curl | Oct 22, 2026 | Jul 3, 2026 |
| Redhat_linux | — | Upgrade libcurl-develUpgrade libcurlUpgrade libcurl-minimal-debuginfoUpgrade curlUpgrade curl-debuginfoUpgrade curl-debugsourceUpgrade libcurl-debuginfoUpgrade libcurl-minimal | Oct 14, 2026 | Jul 3, 2026 |
| Rocky_linux | — | Upgrade curl-debuginfoUpgrade libcurl-minimal-debuginfoUpgrade libcurl-develUpgrade libcurl-minimalUpgrade curl-debugsourceUpgrade curlUpgrade libcurl-debuginfoUpgrade libcurl | Oct 16, 2026 | Oct 15, 2026 |
| Ubuntu | — | Upgrade libcurl4-openssl-devUpgrade libcurl3t64-gnutlsUpgrade libcurl4t64Upgrade libcurl4-gnutls-devUpgrade curl | Jul 12, 2026 | Jul 9, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Aug 13, 2026 | Jul 3, 2026 |
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