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sidebar_label: 2023
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# 2023 Changelog

### ClickHouse release v23.3.16.7-lts (fb4125cc92a) FIXME as compared to v23.3.15.29-lts (218336662e4)

#### Bug Fix (user-visible misbehavior in an official stable release)

* Fix: avoid using regex match, possibly containing alternation, as a key condition. [#54696](https://github.com/ClickHouse/ClickHouse/pull/54696) ([Yakov Olkhovskiy](https://github.com/yakov-olkhovskiy)).
* Fix buffer overflow in T64 [#56434](https://github.com/ClickHouse/ClickHouse/pull/56434) ([Alexey Milovidov](https://github.com/alexey-milovidov)).