A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 18.6, watchOS 11.6, iOS 18.6 and iPadOS 18.6, iPadOS 17.7.9, tvOS 18.6, macOS Sequoia 15.6, visionOS 2.6. Processing maliciously crafted web content may lead to an unexpected Safari crash.
https://support.apple.com/en-us/124155
https://support.apple.com/en-us/124154
https://support.apple.com/en-us/124153
https://support.apple.com/en-us/124152
https://support.apple.com/en-us/124149