Bug 2405127 (CVE-2025-11677)
| Summary: | CVE-2025-11677 libwebsockets: Use After Free in libwebsockets WebSocket server | ||
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| Product: | [Other] Security Response | Reporter: | OSIDB Bzimport <bzimport> |
| Component: | vulnerability | Assignee: | Product Security <prodsec-ir-bot> |
| Status: | NEW --- | QA Contact: | |
| Severity: | low | Docs Contact: | |
| Priority: | low | ||
| Version: | unspecified | CC: | ansmith, eglynn, jjoyce, jschluet, lhh, lsvaty, mburns, mgarciac, peholase, pgrist, pjindal |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | --- | |
| Doc Text: |
A use after free flaw has been discovered in the WebSocket server implementation of libwebsockets. The issue is caused by the `lws_handshake_protocol` function, specifically when the upgrade header is not valid, the function calls `lws_http_transaction_completed`, which frees some of the data in the wsi structure, then it calls `user_callback_handle_rxflow` passing the uppointer and uses it on following strcasecmp calls.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | Type: | --- | |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | 2405247, 2405248, 2405249, 2405250, 2405251 | ||
| Bug Blocks: | |||
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Description
OSIDB Bzimport
2025-10-20 17:23:42 UTC
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