In the Linux kernel, the following vulnerability has been resolved: unicode: Don't special case ignorable code points We don't need to handle them separately. Instead, just let them decompose/casefold to themselves.
Upstream advisory: https://lore.kernel.org/linux-cve-announce/2024110548-CVE-2024-50089-d96d@gregkh/T
This CVE has been rejected upstream: https://lore.kernel.org/linux-cve-announce/2024121241-REJECTED-ea72@gregkh/