The strlcpy and strlcat functions have been added. They are derived from OpenBSD, and are expected to be added to a future POSIX version.
Support for x86_64 running on Hurd has been added.
CVE-2023-25139: When the printf family of functions is called with a
format specifier that uses an (enable grouping) and a
minimum width specifier, the resulting output could be larger than
reasonably expected by a caller that computed a tight bound on the
buffer size. The resulting larger than expected output could result
in a buffer overflow in the printf family of functions.