From 8007e9e61d67044a6b29a266300a936e4c86fdd9 Mon Sep 17 00:00:00 2001 From: Joseph Bisch Date: Mon, 19 Dec 2016 09:31:38 -0500 Subject: Fix oob read on invalid utf8 in term_addstr --- src/fe-text/term-terminfo.c | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) (limited to 'src') diff --git a/src/fe-text/term-terminfo.c b/src/fe-text/term-terminfo.c index b2478c62..3098a4e4 100644 --- a/src/fe-text/term-terminfo.c +++ b/src/fe-text/term-terminfo.c @@ -539,9 +539,16 @@ int term_addstr(TERM_WINDOW *window, const char *str) if (term_type == TERM_TYPE_UTF8) { while (*ptr != '\0') { - tmp = g_utf8_get_char(ptr); - len += unichar_isprint(tmp) ? mk_wcwidth(tmp) : 1; - ptr = g_utf8_next_char(ptr); + tmp = g_utf8_get_char_validated(ptr, -1); + /* On utf8 error, treat as single byte and try to + continue interpretting rest of string as utf8 */ + if (tmp == (gunichar)-1 || tmp == (gunichar)-2) { + len++; + ptr++; + } else { + len += unichar_isprint(tmp) ? mk_wcwidth(tmp) : 1; + ptr = g_utf8_next_char(ptr); + } } } else len = raw_len; -- cgit v1.2.3