News Bitcoin du 03/08/2024

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Bitcoin Optech Newsletter #314 (8 min) The Bitcoin Core project has disclosed two vulnerabilities affecting older versions of the software (before 0.21.0). The first vulnerability allows for a remote crash by sending excessive addr messages, which was discovered by Eugene Siegel and fixed in Bitcoin Core 22.0. The second vulnerability is a remote crash on local networks when UPnP is enabled, caused by a malicious device repeatedly sending variants of a UPnP message until the node crashes. This issue was discovered and reported to the miniupnpc project by Ronald Huveneers and fixed in Bitcoin Core 22.0. Additionally, Niklas Gögge announced these disclosures on the Bitcoin-Dev mailing list.

The newsletter also summarizes a proposed approach for optimizing miner transaction selection when using cluster mempool. Pieter Wuille posted to Delving Bitcoin about ensuring that miner block templates can include the best set of transactions. The approach divides related transactions into an ordered list of chunks, with each chunk obeying two constraints. If any transactions within the chunk depend on other unconfirmed transactions, those other transactions must either be a part of that chunk or appear in a chunk earlier in the ordered list of chunks. Each chunk must have an equal or higher feerate than the chunks that come after it in the ordered list. Wuille also discusses how to handle large chunks and proposes breaking them down into smaller sub-chunks based on their feerates. These sub-chunks can then be considered for inclusion in the remaining block space.

News Bitcoin du 03/08/2024

<img src="https://www.google.com/s2/favicons?sz=32&domain=bitcoinops.org" width="32" height="32" /> Bitcoin Optech#

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