From: Nick Clifton <nickc@redhat.com>
Date: Tue, 5 Sep 2017 11:09:14 +0000 (+0100)
Subject: Fix a buffer overrun when parsing a corrupt MIPS ELF binary.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=f17e9d8ab58474cfa24910f9066f3b9823e190e7;p=binutils-gdb.git

Fix a buffer overrun when parsing a corrupt MIPS ELF binary.

	PR 21995
	* readelf.c (process_mips_specific): Add checks for a NULL data
	pointer.
---

diff --git a/binutils/ChangeLog b/binutils/ChangeLog
index 92d8602546b..53ac9feb641 100644
--- a/binutils/ChangeLog
+++ b/binutils/ChangeLog
@@ -1,3 +1,9 @@
+2017-09-05  Nick Clifton  <nickc@redhat.com>
+
+	PR 21995
+	* readelf.c (process_mips_specific): Add checks for a NULL data
+	pointer.
+
 2017-09-05  Alexander Fedotov <alexander.fedotov@nxp.com>
 	    Edmar Wienskoski <edmar.wienskoski@nxp.com
 
diff --git a/binutils/readelf.c b/binutils/readelf.c
index 571da2cf7c8..d61417aabb0 100644
--- a/binutils/readelf.c
+++ b/binutils/readelf.c
@@ -15324,7 +15324,7 @@ process_mips_specific (FILE * file)
 	      printf ("\n");
 	    }
 
-	  if (ent < end)
+	  if (data != NULL && ent < end)
 	    {
 	      printf (_(" Local entries:\n"));
 	      printf ("  %*s %10s %*s\n",
@@ -15854,7 +15854,7 @@ process_mips_specific (FILE * file)
 	}
       printf ("\n");
 
-      if (ent < local_end)
+      if (data != NULL && ent < local_end)
 	{
 	  printf (_(" Local entries:\n"));
 	  printf ("  %*s %10s %*s\n",
@@ -15870,7 +15870,7 @@ process_mips_specific (FILE * file)
 	  printf ("\n");
 	}
 
-      if (gotsym < symtabno)
+      if (data != NULL && gotsym < symtabno)
 	{
 	  int sym_width;