提交: c6f021093dbd26b4d8e761e9a19af817e9f2561f - binutils_os216 (git)

GNU Binutils with patches for OS216

Commit MetaInfo

• 修订版: c6f021093dbd26b4d8e761e9a19af817e9f2561f (tree)
• 时间: 2019-02-12 01:15:59
• 作者: Nick Clifton <nickc@redh...>
• Commiter: Nick Clifton

Log Message

Fix a NULL pointer dereference in nm, when parsing a corrupt file.

PR 24168
* nm.c (print_symbol): Check for NULL contents of the sym_ptr_ptr
field.

更改概述

• modified: binutils/ChangeLog
• modified: binutils/nm.c

差异

--- a/binutils/ChangeLog
+++ b/binutils/ChangeLog
@@ -1,3 +1,9 @@
[phone]  Nick Clifton  <[e-mail]>
+
+	PR 24168
+	* nm.c (print_symbol): Check for NULL contents of the sym_ptr_ptr
+	field.
+
 2018-03-19  H.J. Lu  <[e-mail]>
 
 	Backport from master branch

--- a/binutils/nm.c
+++ b/binutils/nm.c
@@ -976,6 +976,7 @@ print_symbol (bfd *        abfd,
 	    }
 
 	  symname = bfd_asymbol_name (sym);
+
 	  for (i = 0; i < seccount; i++)
 	    {
 	      long j;
@@ -985,7 +986,9 @@ print_symbol (bfd *        abfd,
 		  arelent *r;
 
 		  r = relocs[i][j];
+
 		  if (r->sym_ptr_ptr != NULL
+		      && * r->sym_ptr_ptr != NULL
 		      && (*r->sym_ptr_ptr)->section == sym->section
 		      && (*r->sym_ptr_ptr)->value == sym->value
 		      && strcmp (symname,