poppler/backport-CVE-2019-7310.patch

16 lines
555 B
Diff

diff -Nuar poppler-0.67.0/poppler/XRef.cc poppler-0.67.0-old/poppler/XRef.cc
--- poppler-0.67.0/poppler/XRef.cc 2021-01-18 16:24:55.368000000 +0800
+++ poppler-0.67.0-old/poppler/XRef.cc 2021-01-18 16:29:29.936000000 +0800
@@ -1628,6 +1628,11 @@
XRefEntry *XRef::getEntry(int i, GBool complainIfMissing)
{
+ if (unlikely(i < 0)) {
+ error(errInternal, -1, "Request for invalid XRef entry [{0:d}]", i);
+ return &dummyXRefEntry;
+ }
+
if (i >= size || entries[i].type == xrefEntryNone) {
if ((!xRefStream) && mainXRefEntriesOffset) {