A use after free vulnerability exists in curl <7.87.0. Curl can be asked to *tunnel* virtually all protocols it supports through an HTTP proxy. HTTP proxies can (and often do) deny such tunnel operations. When getting denied to tunnel the specific protocols SMB or TELNET, curl would use a heap-allocated struct after it had been freed, in its transfer shutdown code path.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade libcurl-minimalUpgrade libcurl-develUpgrade curl-minimalUpgrade curlUpgrade libcurl | May 15, 2023 | Feb 9, 2023 |
| Alpine Linux | — | Upgrade curl | Aug 22, 2024 | Feb 9, 2023 |
| Amazon Linux Ami 2 | — | Upgrade libcurlUpgrade curlUpgrade curl-debuginfoUpgrade libcurl-devel | Feb 7, 2023 | Feb 7, 2023 |
| Amazon_linux | — | Upgrade curl | Apr 21, 2023 | Dec 21, 2022 |
| Amazon_linux_2023 | — | Upgrade curl-debugsourceUpgrade libcurl-develUpgrade curlUpgrade curl-minimal-debuginfoUpgrade libcurl-debuginfoUpgrade curl-debuginfoUpgrade libcurlUpgrade curl-minimalUpgrade libcurl-minimal-debuginfoUpgrade libcurl-minimal | Feb 17, 2025 | Dec 21, 2022 |
| Apple Osx Amd | — | — | Oct 14, 2024 | Feb 9, 2023 |
| Apple Osx Applemobilefileintegrity | — | — | Oct 14, 2024 | Feb 9, 2023 |
| Apple Osx Appleneuralengine | — | — | Oct 14, 2024 | Feb 9, 2023 |
| Apple Osx Applescript | — | — | Oct 14, 2024 | Feb 9, 2023 |
| Apple Osx Appstore | — | — | Oct 14, 2024 | Feb 9, 2023 |
| Apple Osx Archiveutility | — | — | Oct 14, 2024 | Feb 9, 2023 |
| Apple Osx Calendar | — | — | Oct 14, 2024 | Feb 9, 2023 |
| Apple Osx Camera | — | — | Oct 14, 2024 | Feb 9, 2023 |
| Apple Osx Carboncore | — | — | Oct 14, 2024 | Feb 9, 2023 |
| Apple Osx Colorsync | — | — | Oct 14, 2024 | Feb 9, 2023 |
| Apple Osx Commcenter | — | — | Oct 14, 2024 | Feb 9, 2023 |
| Apple Osx Corecapture | — | — | Oct 14, 2024 | Feb 9, 2023 |
| Apple Osx Coreservices | — | — | Oct 14, 2024 | Feb 9, 2023 |
| Apple Osx Crashreporter | — | — | Oct 14, 2024 | Feb 9, 2023 |
| Apple Osx Curl | — | Upgrade macOS to the latest version | Apr 12, 2023 | Mar 27, 2023 |
| Centos_linux | — | Upgrade libcurl-develUpgrade curlUpgrade curl-debuginfoUpgrade libcurl | May 15, 2023 | Feb 9, 2023 |
| Debian | — | Upgrade curl | Jan 30, 2023 | Jan 30, 2023 |
| Gentoo Linux | — | Upgrade net-misc/curl. | Oct 12, 2023 | Feb 9, 2023 |
| Huawei Euleros 2_0_sp10 | — | Upgrade curlUpgrade libcurl | Mar 20, 2023 | Feb 9, 2023 |
| Huawei Euleros 2_0_sp11 | — | Upgrade curlUpgrade libcurl | Mar 24, 2023 | Feb 9, 2023 |
| Huawei Euleros 2_0_sp5 | — | Upgrade curlUpgrade libcurlUpgrade libcurl-devel | Jun 9, 2023 | Feb 9, 2023 |
| Huawei Euleros 2_0_sp8 | — | Upgrade libcurl-develUpgrade curlUpgrade libcurl | Feb 9, 2023 | Feb 8, 2023 |
| Huawei Euleros 2_0_sp9 | — | Upgrade libcurlUpgrade curl | Mar 9, 2023 | Feb 9, 2023 |
| Ibm Aix | — | Apply the fix or workaround for curl_advisory2 | Jul 27, 2023 | Feb 9, 2023 |
| Microsoft Windows | — | 2023-04 Cumulative Update for Microsoft Windows Server 2019, version 1809 (KB5025229)2023-04 Cumulative Update for Microsoft Windows 10, version 21H2 (KB5025221)2023-04 Cumulative Update for Microsoft Windows Server 2022, version 22H2 (KB5025230)2023-04 Cumulative Update for Microsoft Windows 11, version 22H2 (KB5025239)2023-04 Cumulative Update for Microsoft Windows Server 2022, version 21H2 (KB5025230)2023-04 Cumulative Update for Microsoft Windows 11, version 21H2 (KB5025224)2023-04 Cumulative Update for Microsoft Windows 10, version 22H2 (KB5025221)2023-04 Cumulative Update for Microsoft Windows 10, version 1809 (KB5025229)2023-04 Cumulative Update for Microsoft Windows 10, version 20H2 (KB5025221) | Apr 15, 2024 | Apr 15, 2024 |
| Nutanix Ahv | — | Upgrade Nutanix AHV to the latest version | Jun 5, 2026 | Feb 20, 2024 |
| Oracle_linux | — | Upgrade curl-minimalUpgrade libcurl-minimalUpgrade libcurlUpgrade libcurl-develUpgrade curl | May 17, 2023 | Dec 21, 2022 |
| Redhat_linux | — | Upgrade libcurl-develUpgrade curl-minimal-debuginfoUpgrade curlUpgrade libcurl-minimalUpgrade libcurl-minimal-debuginfoUpgrade curl-debugsourceUpgrade libcurl-debuginfoUpgrade curl-minimalNo solution existsUpgrade libcurlUpgrade curl-debuginfo | May 15, 2023 | Feb 9, 2023 |
| Splunk | — | Upgrade Splunk Enterprise to version 8.2.12Upgrade Splunk Enterprise to version 9.1.1Upgrade Splunk Enterprise to version 8.1.14Upgrade Splunk Universal Forwarder to version 8.1.14Upgrade Splunk Universal Forwarder to version 8.2.12Upgrade Splunk Universal Forwarder to version 9.0.6Upgrade Splunk Universal Forwarder to version 9.1.1Upgrade Splunk Universal Forwarder to version 8.2.11Upgrade Splunk Universal Forwarder to version 9.0.5Upgrade Splunk Enterprise to version 8.2.11Upgrade Splunk Enterprise to version 9.0.6Upgrade Splunk Enterprise to version 9.0.5 | Sep 30, 2025 | Feb 9, 2023 |
| Suse | — | Upgrade libcurl-develUpgrade libcurl4Upgrade curlUpgrade libcurl4-32bitUpgrade libcurl-devel-32bit | Dec 22, 2022 | Dec 21, 2022 |
| Ubuntu | — | Upgrade curl (Ubuntu Pro)Upgrade libcurl3-nss (Ubuntu Pro)Upgrade libcurl3-gnutls (Ubuntu Pro)Upgrade libcurl3-nssUpgrade libcurl3-gnutlsUpgrade curlUpgrade libcurl3 (Ubuntu Pro)Upgrade libcurl4 | Jan 6, 2023 | Dec 21, 2022 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | Feb 9, 2023 |
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