libobs: Fix buffer overrun in os_wcs_to_utf8()

derrod · Lain-B · commit 95a753b9d8f1 · 2024-08-06T08:34:24.000-07:00
diff --git a/libobs/util/platform.c b/libobs/util/platform.c
@@ -429,8 +429,7 @@ size_t os_wcs_to_utf8(const wchar_t *str, size_t len, char *dst,
 			return 0;
 
 		if (out_len)
-			out_len =
-				wchar_to_utf8(str, in_len, dst, out_len + 1, 0);
+			out_len = wchar_to_utf8(str, in_len, dst, out_len, 0);
 
 		dst[out_len] = 0;
 	}

Original file line number	Diff line number	Diff line change
`@@ -429,8 +429,7 @@ size_t os_wcs_to_utf8(const wchar_t str, size_t len, char dst,`
`429`	`429`	`return 0;`
`430`	`430`
`431`	`431`	`if (out_len)`
`432`		`- out_len =`
`433`		`- wchar_to_utf8(str, in_len, dst, out_len + 1, 0);`
	`432`	`+ out_len = wchar_to_utf8(str, in_len, dst, out_len, 0);`
`434`	`433`
`435`	`434`	`dst[out_len] = 0;`
`436`	`435`	`}`