This issue was addressed with improved handling of floats. This issue is fixed in tvOS 18.4, Safari 18.4, iPadOS 17.7.6, iOS 18.4 and iPadOS 18.4, macOS Sequoia 15.4. A type confusion issue could lead to memory corruption.
https://support.apple.com/en-us/122379
https://support.apple.com/en-us/122377
https://support.apple.com/en-us/122373