From 82df2631d7d0446b206ea6b434ea609b6c28b0e8 Mon Sep 17 00:00:00 2001 From: Tor Andersson Date: Mon, 16 Oct 2017 13:14:25 +0200 Subject: [PATCH] Check for integer overflow when validating new style xref Index. --- source/pdf/pdf-xref.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/source/pdf/pdf-xref.c b/source/pdf/pdf-xref.c index 66bd0ed..6292793 100644 --- a/source/pdf/pdf-xref.c +++ b/source/pdf/pdf-xref.c @@ -924,7 +924,7 @@ pdf_read_new_xref_section(fz_context *ctx, pdf_document *doc, fz_stream *stm, fz pdf_xref_entry *table; int i, n; - if (i0 < 0 || i1 < 0) + if (i0 < 0 || i1 < 0 || (i0+i1) < 0) fz_throw(ctx, FZ_ERROR_GENERIC, "negative xref stream entry index"); //if (i0 + i1 > pdf_xref_len(ctx, doc)) // fz_throw(ctx, FZ_ERROR_GENERIC, "xref stream has too many entries"); -- 2.9.1