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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>