Bitcoin Core consists of both "full-node" software for fully validating the blockchain as well as a bitcoin wallet.
Please review the CVE identifier referenced below for details.
Bitcoin Core, when debug mode is not used, allows attackers to cause a denial of service (CPU consumption) because draining the inventory-to-send queue is inefficient, as exploited in the wild in May 2023.
There is no known workaround at this time.
All Bitcoin users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-p2p/bitcoind-25.0"