Due to a mistake in libcurl's WebSocket code, a malicious server can send a particularly crafted packet which makes libcurl get trapped in an endless busy-loop.
There is no other way for the application to escape or exit this loop other than killing the thread/process.
This might be used to DoS libcurl-using application.
CVSS Details
- CVSS 3.1 Base Score: 7.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | alma-upgrade-mecabalma-upgrade-mecab-develalma-upgrade-mecab-ipadicalma-upgrade-mecab-ipadic-eucjpalma-upgrade-mysqlalma-upgrade-mysql-commonalma-upgrade-mysql-develalma-upgrade-mysql-errmsgalma-upgrade-mysql-libsalma-upgrade-mysql-serveralma-upgrade-mysql-testalma-upgrade-mysql-test-dataalma-upgrade-rapidjson-develalma-upgrade-rapidjson-doc | Sep 19, 2025 | Sep 17, 2025 | |
| Alpine Linux | alpine-linux-upgrade-curl | Aug 8, 2025 | Jun 7, 2025 | |
| Arch Linux | arch-linux-upgrade-latest | Jul 11, 2025 | Jun 7, 2025 | |
| Oracle Mysql | mysql-upgrade-8_0_43mysql-upgrade-8_4_6mysql-upgrade-9_4_0 | Jul 16, 2025 | Jun 7, 2025 | |
| Oracle_linux | — | oracle-linux-upgrade-mecaboracle-linux-upgrade-mecab-develoracle-linux-upgrade-mecab-ipadicoracle-linux-upgrade-mecab-ipadic-eucjporacle-linux-upgrade-mysqloracle-linux-upgrade-mysql8-4oracle-linux-upgrade-mysql8-4-commonoracle-linux-upgrade-mysql8-4-develoracle-linux-upgrade-mysql8-4-errmsgoracle-linux-upgrade-mysql8-4-libsoracle-linux-upgrade-mysql8-4-serveroracle-linux-upgrade-mysql8-4-testoracle-linux-upgrade-mysql8-4-test-dataoracle-linux-upgrade-mysql-commonoracle-linux-upgrade-mysql-develoracle-linux-upgrade-mysql-errmsgoracle-linux-upgrade-mysql-libsoracle-linux-upgrade-mysql-selinuxoracle-linux-upgrade-mysql-serveroracle-linux-upgrade-mysql-testoracle-linux-upgrade-mysql-test-dataoracle-linux-upgrade-rapidjson-develoracle-linux-upgrade-rapidjson-doc | Sep 15, 2025 | Jun 7, 2025 |
| Redhat_linux | — | redhat-upgrade-mecab-0-996redhat-upgrade-mecab-debuginfo-0-996redhat-upgrade-mecab-debugsource-0-996redhat-upgrade-mecab-devel-0-996redhat-upgrade-mecab-ipadic-2-7-0-20070801redhat-upgrade-mecab-ipadic-eucjp-2-7-0-20070801redhat-upgrade-mysql-8-4-6redhat-upgrade-mysql-common-8-4-6redhat-upgrade-mysql-debuginfo-8-4-6redhat-upgrade-mysql-debugsource-8-4-6redhat-upgrade-mysql-devel-8-4-6redhat-upgrade-mysql-devel-debuginfo-8-4-6redhat-upgrade-mysql-errmsg-8-4-6redhat-upgrade-mysql-libs-8-4-6redhat-upgrade-mysql-libs-debuginfo-8-4-6redhat-upgrade-mysql-server-8-4-6redhat-upgrade-mysql-server-debuginfo-8-4-6redhat-upgrade-mysql-test-8-4-6redhat-upgrade-mysql-test-data-8-4-6redhat-upgrade-mysql-test-debuginfo-8-4-6redhat-upgrade-rapidjson-devel-1-1-0redhat-upgrade-rapidjson-doc-1-1-0 | Jul 17, 2025 | Jun 7, 2025 |
| Rocky_linux | rocky-upgrade-mysql8.4rocky-upgrade-mysql8.4-debuginforocky-upgrade-mysql8.4-debugsourcerocky-upgrade-mysql8.4-develrocky-upgrade-mysql8.4-devel-debuginforocky-upgrade-mysql8.4-libsrocky-upgrade-mysql8.4-libs-debuginforocky-upgrade-mysql8.4-serverrocky-upgrade-mysql8.4-server-debuginforocky-upgrade-mysql8.4-testrocky-upgrade-mysql8.4-test-debuginfo | Feb 5, 2026 | Oct 3, 2025 | |
| Suse | — | suse-upgrade-curlsuse-upgrade-curl-zsh-completionsuse-upgrade-libcurl-develsuse-upgrade-libcurl-devel-32bitsuse-upgrade-libcurl-devel-docsuse-upgrade-libcurl-mini4suse-upgrade-libcurl4suse-upgrade-libcurl4-32bit | Sep 15, 2025 | Sep 12, 2025 |
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