CLI & GUI v0.17.1.9 'Oxygen Orion' released (includes patch for memory exhaustion attack)!

This is the CLI & GUI v0.17.1.9 'Oxygen Orion' point release. This release predominantly features bug fixes and performance improvements. Users, however, are recommended to upgrade, as it includes further mitigations for the issue, [caused by the recently observed misbehaving (malicious) nodes](https://www.reddit.com/r/Monero/comments/jrh7mv/psa_informational_thread_on_the_recently_observed/), where the daemon (monerod) reports that the sync has 1-2 blocks left (whilst actually being fully synced). Additionally, a patch for the `monerod` OOM (out of memory) issue is included. # (Direct) download links (GUI) * [Windows 64-bit](https://downloads.getmonero.org/gui/monero-gui-win-x64-v0.17.1.9.zip) * [Windows 64-bit installer](https://downloads.getmonero.org/gui/monero-gui-install-win-x64-v0.17.1.9.exe) * [Linux 64-bit](https://downloads.getmonero.org/gui/monero-gui-linux-x64-v0.17.1.9.tar.bz2) * [Mac OS X 64-bit](https://downloads.getmonero.org/gui/monero-gui-mac-x64-v0.17.1.9.dmg) # (Direct) download links (CLI) * [Windows 64-bit](https://downloads.getmonero.org/cli/monero-win-x64-v0.17.1.9.zip) * [Windows 32-bit](https://downloads.getmonero.org/cli/monero-win-x86-v0.17.1.9.zip) * [Linux 64-bit](https://downloads.getmonero.org/cli/monero-linux-x64-v0.17.1.9.tar.bz2) * [Linux 32-bit](https://downloads.getmonero.org/cli/monero-linux-x86-v0.17.1.9.tar.bz2) * [Mac OS X 64-bit](https://downloads.getmonero.org/cli/monero-mac-x64-v0.17.1.9.tar.bz2) * [FreeBSD](https://downloads.getmonero.org/cli/monero-freebsd-x64-v0.17.1.9.tar.bz2) * [ARMv7](https://downloads.getmonero.org/cli/monero-linux-armv7-v0.17.1.9.tar.bz2) * [ARMv8](https://downloads.getmonero.org/cli/monero-linux-armv8-v0.17.1.9.tar.bz2) * [Android - ARMv7](https://downloads.getmonero.org/cli/monero-android-armv7-v0.17.1.9.tar.bz2) * [Android - ARMv8](https://downloads.getmonero.org/cli/monero-android-armv8-v0.17.1.9.tar.bz2) # GPG signed hashes We encourage users to check the integrity of the binaries and v...