Fix a memory leak reading minisymbols.

Resolves: #1661535

binutils-CVE-2018-20002.patch

@@ -0,0 +1,56 @@
+diff -rup binutils.ori/bfd/syms.c binutils-2.31.1/bfd/syms.c
+--- binutils.ori/bfd/syms.c	2019-01-03 13:51:05.784005438 +0000
++++ binutils-2.31.1/bfd/syms.c	2019-01-03 13:53:43.238815129 +0000
+@@ -822,10 +822,18 @@ _bfd_generic_read_minisymbols (bfd *abfd
+   if (symcount < 0)
+     goto error_return;
+ 
+-  *minisymsp = syms;
+-  *sizep = sizeof (asymbol *);
++  if (symcount == 0)
++    /* We return 0 above when storage is 0.  Exit in the same state
++       here, so as to not complicate callers with having to deal with
++       freeing memory for zero symcount.  */
++    free (syms);
++  else
++    {
++      *minisymsp = syms;
++      *sizep = sizeof (asymbol *);
++    }
+ 
+-  return symcount;
++ return symcount;
+ 
+  error_return:
+   bfd_set_error (bfd_error_no_symbols);
+diff -rup binutils.ori/binutils/nm.c binutils-2.31.1/binutils/nm.c
+--- binutils.ori/binutils/nm.c	2019-01-03 13:51:06.337001258 +0000
++++ binutils-2.31.1/binutils/nm.c	2019-01-03 13:52:37.542311774 +0000
+@@ -1162,13 +1162,11 @@ display_rel_file (bfd *abfd, bfd *archiv
+       if (synth_count > 0)
+ 	{
+ 	  asymbol **symp;
+-	  void *new_mini;
+ 	  long i;
+ 
+-	  new_mini = xmalloc ((symcount + synth_count + 1) * sizeof (*symp));
+-	  symp = (asymbol **) new_mini;
+-	  memcpy (symp, minisyms, symcount * sizeof (*symp));
+-	  symp += symcount;
++	  minisyms = xrealloc (minisyms,
++			       (symcount + synth_count + 1) * sizeof (*symp));
++	  symp = (asymbol **) minisyms + symcount;
+ 	  for (i = 0; i < synth_count; i++)
+ 	    *symp++ = synthsyms + i;
+ 	  *symp = 0;
+diff -rup binutils.orig/binutils/nm.c binutils-2.31.1/binutils/nm.c
+--- binutils.orig/binutils/nm.c	2019-01-03 14:18:21.086458519 +0000
++++ binutils-2.31.1/binutils/nm.c	2019-01-03 14:18:23.642438853 +0000
+@@ -1170,7 +1170,6 @@ display_rel_file (bfd *abfd, bfd *archiv
+ 	  for (i = 0; i < synth_count; i++)
+ 	    *symp++ = synthsyms + i;
+ 	  *symp = 0;
+-	  minisyms = new_mini;
+ 	  symcount += synth_count;
+ 	}
+     }

binutils.spec

@@ -75,7 +75,7 @@
 Summary: A GNU collection of binary utilities
 Name: %{?cross}binutils%{?_with_debug:-debug}
 Version: 2.31.1
-Release: 18%{?dist}
+Release: 19%{?dist}
 License: GPLv3+
 URL: https://sourceware.org/binutils
 
@@ -218,6 +218,10 @@ Patch23: binutils-special-sections-in-groups.patch
 # Lifetime: Fixed in 2.32
 Patch24: binutils-gold-discard-version-info.patch
 
+# Purpose:  Fix a memory leak reading minisymbols.
+# Lifetime: Fixed in 2.32
+Patch25: binutils-CVE-2018-20002.patch
+
 #----------------------------------------------------------------------------
 
 Provides: bundled(libiberty)
@@ -364,6 +368,7 @@ using libelf instead of BFD.
 %patch22 -p1
 %patch23 -p1
 %patch24 -p1
+%patch25 -p1
 
 # We cannot run autotools as there is an exact requirement of autoconf-2.59.
 # FIXME - this is no longer true.  Maybe try reinstating autotool use ?
@@ -792,6 +797,9 @@ exit 0
 
 #----------------------------------------------------------------------------
 %changelog
+* Thu Jan 03 2019 Nick Clifton  <nickc@redhat.com> - 2.31.1-19
+- Fix a memory leak reading minisymbols.  (#1661535)
+
 * Wed Jan 02 2019 Nick Clifton  <nickc@redhat.com> - 2.31.1-18
 - Ensure that GOLD is linked with pthread library.  (#1636479)