xmltok_impl.c in Expat (aka libexpat) before 2.4.5 lacks certain
validation of encoding, such as checks for whether a UTF-8 character
is valid in a certain context.
Backport patches from:
https://github.com/libexpat/libexpat/pull/562/commits
CVE: CVE-2022-25235
(From OE-Core rev: 27ab07b1e8caa5c85526eee4a7a3ad0d73326866)
Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>