Bitcoin Core before 25.0 allows remote attackers to cause a denial of service (blocktxn message-handling assertion and node exit) by including transactions in a blocktxn message that are not committed to in a block's merkle root. FillBlock can be called twice for one PartiallyDownloadedBlock instance.
https://github.com/bitcoin/bitcoin/releases/tag/v25.0
https://github.com/bitcoin/bitcoin/pull/26898
https://github.com/bitcoin/bitcoin/blob/master/doc/release-notes/release-notes-25.0.md
https://en.bitcoin.it/wiki/Common_Vulnerabilities_and_Exposures
https://bitcoincore.org/en/2024/10/08/disclose-blocktxn-crash/