diff options
| -rw-r--r-- | lib/libc/locale/utf8.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/lib/libc/locale/utf8.c b/lib/libc/locale/utf8.c index 40f0e17..ef5784a 100644 --- a/lib/libc/locale/utf8.c +++ b/lib/libc/locale/utf8.c @@ -203,6 +203,14 @@ _UTF8_mbrtowc(wchar_t * __restrict pwc, const char * __restrict s, size_t n, errno = EILSEQ; return ((size_t)-1); } + if ((wch >= 0xd800 && wch <= 0xdfff) || + wch == 0xfffe || wch == 0xffff) { + /* + * Malformed input; invalid code points. + */ + errno = EILSEQ; + return ((size_t)-1); + } if (pwc != NULL) *pwc = wch; us->want = 0; |
