[poppler] poppler/JBIG2Stream.cc

[Albert Astals Cid]

 poppler/JBIG2Stream.cc |    2 ++
 1 file changed, 2 insertions(+)

New commits:
commit f279778fe0aca610cdecb70d0a714bbaa08b0d22
Author: Albert Astals Cid <aacid at kde.org>
Date:   Thu May 24 13:06:00 2018 +0200

    JBIG2Stream::readSymbolDictSeg: Fix potential uninitialized memory use
    
    fixes oss-fuzz/8468

diff --git a/poppler/JBIG2Stream.cc b/poppler/JBIG2Stream.cc
index 0ed1e644..654f6405 100644
--- a/poppler/JBIG2Stream.cc
+++ b/poppler/JBIG2Stream.cc
@@ -1930,6 +1930,8 @@ GBool JBIG2Stream::readSymbolDictSeg(Guint segNum, Guint length,
   // exported symbol list
   i = j = 0;
   ex = gFalse;
+  run = 0; // initialize it once in case the first decodeInt fails
+           // we do not want to use uninitialized memory
   while (i < numInputSyms + numNewSyms) {
     if (huff) {
       huffDecoder->decodeInt(&run, huffTableA);