CVE-2026-82210: Enforceable assertion in the streaming feature of Apache bRPC (version 0) and unconditionally asserts CHECK(buf.IsEmpty()) on the frame payload. A feedback…

PriorityP432

EPSS

0.19%

8.3th percentile

Enforceable assertion in the streaming feature of Apache bRPC (version 0) and unconditionally asserts CHECK(buf.IsEmpty()) on the frame payload. A feedback frame that carries an unexpected payload, or a feedback frame received on a stream where flow control is disabled (cur_buf_size == 0), reaches these assertions. On failure, CHECK failures abort the process, allowing an unauthenticated single client (once a stream is established) to terminate the server and cause a denial of service. Affected Scenarios: Use bRPC server with the streaming control feature (Stream API) served from untrusted network. How to Fix: 1. Upgrade bRPC to version 1.18.0, which fixes this issue. 2. Apply this patch: https://github.com/apache/brpc/pull/3494 The fix rejects malformed feedback frames with EPROTO and closes only the affected stream instead of crashing the whole process, and it bounds buffer shrinking so cur_buf_size never drops to 0 while flow control is enabled.

Affected

1 ranges

Vendor	Product	Version range	Fixed in
apache_software_foundation	apache_brpc	< 1.18.0	1.18.0

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