diff options
| -rw-r--r-- | source/pdf/pdf-xref.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/source/pdf/pdf-xref.c b/source/pdf/pdf-xref.c index 01a584e3..6d440418 100644 --- a/source/pdf/pdf-xref.c +++ b/source/pdf/pdf-xref.c @@ -363,6 +363,8 @@ pdf_xref_size_from_old_trailer(pdf_document *doc, pdf_lexbuf *buf) if (!s) fz_throw(doc->ctx, FZ_ERROR_GENERIC, "invalid range marker in xref"); len = fz_atoi(fz_strsep(&s, " ")); + if (len <= 0) + fz_throw(doc->ctx, FZ_ERROR_GENERIC, "xref range marker must be positive"); /* broken pdfs where the section is not on a separate line */ if (s && *s != '\0') |