Live › vulnerability › CVE-2026-82953
Go to dashboardA null pointer dereference in the RTMP implementation of Apache bRPC before 1.18.0 crashes the server when a rejected createStream request's error response fails to write. A remote client can trigger this by sending a createStream command and closing the connection immediately, causing denial of service.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 21:57 UTC. All times on this page are UTC.
Only servers running Apache bRPC's RTMP protocol with a service whose RtmpService::NewStream() can return null, meaning it rejects createStream requests. Teams not running RTMP on bRPC can skip it.
No product ranges from the sources yet.
grep -r BRPC_VERSION in the build tree or the version in your package manager, and confirm whether it is below 1.18.0.RtmpService::NewStream() can return null.1.18.0.Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
NULL pointer dereference in the RTMP protocol implementation in Apache bRPC (version < 1.18.0) on all platforms allows remote attackers to crash the server (denial of service) via a crafted createStream command.
Root Cause: When an RTMP service rejects a createStream request by returning a null stream from RtmpService::NewStream(), the server sends an error response to the client. If writing this rejection response fails (for example, because the client closes the connection immediately after sending the createStream command), the error-handling path in RtmpChunkStream::OnCreateStream() dereferences the null stream pointer to access stream->_onfail_id, causing the process to crash.
Affected Scenarios: Run an Apache bRPC RTMP server whose RtmpService::NewStream() may return null (i.e., the service rejects createStream requests). A remote client that sends a createStream command and then closes the connection before the rejection response is written can crash the server.
How to Fix: (Choose one of the following options)
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