From 2ea32f7372b65c24b2816f11c04bf59b5090d05b Mon Sep 17 00:00:00 2001
From: erouault <erouault>
Date: Thu, 12 Jan 2017 19:23:20 +0000
Subject: [PATCH] * libtiff/tif_ojpeg.c: fix leak in
 OJPEGReadHeaderInfoSecTablesQTable, OJPEGReadHeaderInfoSecTablesDcTable and
 OJPEGReadHeaderInfoSecTablesAcTable

Fixes CVE-2017-7594

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
---
 libtiff/tif_ojpeg.c | 6 ++++++
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/libtiff/tif_ojpeg.c b/libtiff/tif_ojpeg.c
index b92f0ebd..5f6c684c 100644
--- a/libtiff/tif_ojpeg.c
+++ b/libtiff/tif_ojpeg.c
@@ -1790,7 +1790,10 @@ OJPEGReadHeaderInfoSecTablesQTable(TIFF* tif)
 			TIFFSeekFile(tif,sp->qtable_offset[m],SEEK_SET); 
 			p=(uint32)TIFFReadFile(tif,&ob[sizeof(uint32)+5],64);
 			if (p!=64)
+                        {
+                                _TIFFfree(ob);
 				return(0);
+                        }
 			sp->qtable[m]=ob;
 			sp->sof_tq[m]=m;
 		}
@@ -1854,7 +1857,10 @@ OJPEGReadHeaderInfoSecTablesDcTable(TIFF* tif)
 				rb[sizeof(uint32)+5+n]=o[n];
 			p=(uint32)TIFFReadFile(tif,&(rb[sizeof(uint32)+21]),q);
 			if (p!=q)
+                        {
+                                _TIFFfree(rb);
 				return(0);
+                        }
 			sp->dctable[m]=rb;
 			sp->sos_tda[m]=(m<<4);
 		}
-- 
2.11.0