tree 2df53cfd90a3d3cc337f2867aec447c2b4f59109
parent 1b2ffc3206acd4d6f49450b3abfbe3444fdd51f5
author Maxim Dounin <mdounin@mdounin.ru> 1555348447 +0300
committer Maxim Dounin <mdounin@mdounin.ru> 1555348447 +0300

Fixed incorrect length handling in ngx_utf8_length().

Previously, ngx_utf8_decode() was called from ngx_utf8_length() with
incorrect length, potentially resulting in out-of-bounds read when
handling invalid UTF-8 strings.

In practice out-of-bounds reads are not possible though, as autoindex, the
only user of ngx_utf8_length(), provides null-terminated strings, and
ngx_utf8_decode() anyway returns an errors when it sees a null in the
middle of an UTF-8 sequence.

Reported by Yunbin Liu.