CVE-2026-32314
Yamux remote Panic via malformed Data frame with SYN set and len = 262145
Description
Yamux is a stream multiplexer over reliable, ordered connections such as TCP/IP. Prior to 0.13.10, the Rust implementation of Yamux can panic when processing a crafted inbound Data frame that sets SYN and uses a body length greater than DEFAULT_CREDIT (e.g. 262145). On the first packet of a new inbound stream, stream state is created and a receiver is queued before oversized-body validation completes. When validation fails, the temporary stream is dropped and cleanup may call remove(...).expect("stream not found"), triggering a panic in the connection state machine. This is remotely reachable over a normal Yamux session and does not require authentication. This vulnerability is fixed in 0.13.10.
INFO
Published Date :
March 13, 2026, 7:53 p.m.
Last Modified :
March 13, 2026, 7:53 p.m.
Remotely Exploit :
No
Source :
GitHub_M
Affected Products
The following products are affected by CVE-2026-32314
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Update Yamux to version 0.13.10 or later.
- Apply security patches to the Yamux library.
- Ensure proper input validation for data frames.
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CVE-2026-32314 vulnerability anywhere in the article.