]> git.ipfire.org Git - thirdparty/openembedded/openembedded-core-contrib.git/commitdiff
binutils: CVE-2017-12450_12452_12453_12454_12456
authorThiruvadi Rajaraman <trajaraman@mvista.com>
Thu, 31 Aug 2017 13:53:29 +0000 (19:23 +0530)
committerArmin Kuster <akuster@mvista.com>
Fri, 24 Nov 2017 01:40:46 +0000 (17:40 -0800)
Source: git://sourceware.org/git/binutils-gdb.git
MR: 73854, 73827, 73814, 73801, 73775
Type: Security Fix
Disposition: Backport from binutils-2_29-branch
ChangeID: fb23096307f9903872a04edf171d1fd2099e35c5
Description:

Fix address violation errors parsing corrupt binary files.

PR 21813
    binutils* rddbg.c (read_symbol_stabs_debugging_info): Check for an empty
        string whilst concatenating symbol names.

    bfd * mach-o.c (bfd_mach_o_canonicalize_relocs): Pass the base address
        of the relocs to the canonicalize_one_reloc routine.
        * mach-o.h (struct bfd_mach_o_backend_data): Update the prototype
        for the _bfd_mach_o_canonicalize_one_reloc field.
        * mach-o-arm.c (bfd_mach_o_arm_canonicalize_one_reloc): Add
        res_base parameter.  Use to check for corrupt pair relocs.
        * mach-o-aarch64.c (bfd_mach_o_arm64_canonicalize_one_reloc):
        Likewise.
        * mach-o-i386.c (bfd_mach_o_i386_canonicalize_one_reloc):
        Likewise.
        * mach-o-x86-64.c (bfd_mach_o_x86_64_canonicalize_one_reloc):
        Likewise.

        * vms-alpha.c (_bfd_vms_slurp_eihd): Make sure that there is
        enough data in the record before attempting to parse it.
        (_bfd_vms_slurp_eeom): Likewise.

        (_bfd_vms_slurp_egsd): Check for an invalid section index.
        (image_set_ptr): Likewise.
        (alpha_vms_slurp_relocs): Likewise.

Affects: <= 2.29
Signed-off-by: Thiruvadi Rajaraman <trajaraman@mvista.com>
Reviewed-by: Armin Kuster <akuster@mvista.com>
Signed-off-by: Armin Kuster <akuster@mvista.com>
Signed-off-by: Armin Kuster <akuster808@gmail.com>
meta/recipes-devtools/binutils/binutils-2.27.inc
meta/recipes-devtools/binutils/binutils/CVE-2017-12450_12452_12453_12454_12456.patch [new file with mode: 0644]
meta/recipes-devtools/binutils/binutils/CVE-2017-12450_12452_12453_12454_12456_1.patch [new file with mode: 0644]

index 3329a97ecf032f3fabea4eb0c6b1ed9cff25a1f4..3b7c9f776b9de913026f188129d0d59486749b0d 100644 (file)
@@ -57,6 +57,8 @@ SRC_URI = "\
      file://CVE-2017-12449_12455_12457_1.patch \
      file://CVE-2017-12449_12455_12457.patch \
      file://CVE-2017-12451.patch \
+     file://CVE-2017-12450_12452_12453_12454_12456_1.patch \
+     file://CVE-2017-12450_12452_12453_12454_12456.patch \
 "
 S  = "${WORKDIR}/git"
 
diff --git a/meta/recipes-devtools/binutils/binutils/CVE-2017-12450_12452_12453_12454_12456.patch b/meta/recipes-devtools/binutils/binutils/CVE-2017-12450_12452_12453_12454_12456.patch
new file mode 100644 (file)
index 0000000..503f655
--- /dev/null
@@ -0,0 +1,375 @@
+commit ca4cf9b9c622a5695e01f7f5815a7382a31fcf51
+Author: Nick Clifton <nickc@redhat.com>
+Date:   Mon Jul 24 13:49:22 2017 +0100
+
+    Fix address violation errors parsing corrupt binary files.
+    
+       PR 21813
+    binutils* rddbg.c (read_symbol_stabs_debugging_info): Check for an empty
+       string whilst concatenating symbol names.
+    
+    bfd        * mach-o.c (bfd_mach_o_canonicalize_relocs): Pass the base address
+       of the relocs to the canonicalize_one_reloc routine.
+       * mach-o.h (struct bfd_mach_o_backend_data): Update the prototype
+       for the _bfd_mach_o_canonicalize_one_reloc field.
+       * mach-o-arm.c (bfd_mach_o_arm_canonicalize_one_reloc): Add
+       res_base parameter.  Use to check for corrupt pair relocs.
+       * mach-o-aarch64.c (bfd_mach_o_arm64_canonicalize_one_reloc):
+       Likewise.
+       * mach-o-i386.c (bfd_mach_o_i386_canonicalize_one_reloc):
+       Likewise.
+       * mach-o-x86-64.c (bfd_mach_o_x86_64_canonicalize_one_reloc):
+       Likewise.
+    
+       * vms-alpha.c (_bfd_vms_slurp_eihd): Make sure that there is
+       enough data in the record before attempting to parse it.
+       (_bfd_vms_slurp_eeom): Likewise.
+    
+       (_bfd_vms_slurp_egsd): Check for an invalid section index.
+       (image_set_ptr): Likewise.
+       (alpha_vms_slurp_relocs): Likewise.
+
+        (alpha_vms_object_p): Check for a truncated record.
+
+Upstream-Status: Backport
+
+CVE: CVE-2017-12450, CVE-2017-12452, CVE-2017-12453, CVE-2017-12454, CVE-2017-12456
+Signed-off-by: Thiruvadi Rajaraman <trajaraman@mvista.com>
+
+Index: git/bfd/mach-o-aarch64.c
+===================================================================
+--- git.orig/bfd/mach-o-aarch64.c      2017-08-31 19:17:51.264385450 +0530
++++ git/bfd/mach-o-aarch64.c   2017-08-31 19:18:02.620442777 +0530
+@@ -147,9 +147,11 @@
+ };
+ static bfd_boolean
+-bfd_mach_o_arm64_canonicalize_one_reloc (bfd *abfd,
+-                                     struct mach_o_reloc_info_external *raw,
+-                                       arelent *res, asymbol **syms)
++bfd_mach_o_arm64_canonicalize_one_reloc (bfd *       abfd,
++                                       struct mach_o_reloc_info_external * raw,
++                                       arelent *   res,
++                                       asymbol **  syms,
++                                       arelent *   res_base ATTRIBUTE_UNUSED)
+ {
+   bfd_mach_o_reloc_info reloc;
+Index: git/bfd/mach-o-i386.c
+===================================================================
+--- git.orig/bfd/mach-o-i386.c 2017-08-31 19:17:51.264385450 +0530
++++ git/bfd/mach-o-i386.c      2017-08-31 19:18:02.620442777 +0530
+@@ -112,9 +112,11 @@
+ };
+ static bfd_boolean
+-bfd_mach_o_i386_canonicalize_one_reloc (bfd *abfd,
+-                                      struct mach_o_reloc_info_external *raw,
+-                                      arelent *res, asymbol **syms)
++bfd_mach_o_i386_canonicalize_one_reloc (bfd *       abfd,
++                                      struct mach_o_reloc_info_external * raw,
++                                      arelent *   res,
++                                      asymbol **  syms,
++                                      arelent *   res_base)
+ {
+   bfd_mach_o_reloc_info reloc;
+@@ -126,6 +128,9 @@
+       switch (reloc.r_type)
+         {
+         case BFD_MACH_O_GENERIC_RELOC_PAIR:
++        /* PR 21813: Check for a corrupt PAIR reloc at the start.  */
++        if (res == res_base)
++          return FALSE;
+           if (reloc.r_length == 2)
+             {
+             res->howto = &i386_howto_table[7];
+@@ -391,9 +396,9 @@
+     { NULL, NULL }
+   };
+-#define bfd_mach_o_canonicalize_one_reloc bfd_mach_o_i386_canonicalize_one_reloc
+-#define bfd_mach_o_swap_reloc_out bfd_mach_o_i386_swap_reloc_out
+-#define bfd_mach_o_print_thread bfd_mach_o_i386_print_thread
++#define bfd_mach_o_canonicalize_one_reloc  bfd_mach_o_i386_canonicalize_one_reloc
++#define bfd_mach_o_swap_reloc_out          bfd_mach_o_i386_swap_reloc_out
++#define bfd_mach_o_print_thread            bfd_mach_o_i386_print_thread
+ #define bfd_mach_o_tgt_seg_table mach_o_i386_segsec_names_xlat
+ #define bfd_mach_o_section_type_valid_for_tgt NULL
+Index: git/bfd/mach-o-x86-64.c
+===================================================================
+--- git.orig/bfd/mach-o-x86-64.c       2017-08-31 19:17:51.264385450 +0530
++++ git/bfd/mach-o-x86-64.c    2017-08-31 19:18:02.620442777 +0530
+@@ -120,9 +120,11 @@
+ };
+ static bfd_boolean
+-bfd_mach_o_x86_64_canonicalize_one_reloc (bfd *abfd,
+-                                      struct mach_o_reloc_info_external *raw,
+-                                      arelent *res, asymbol **syms)
++bfd_mach_o_x86_64_canonicalize_one_reloc (bfd *       abfd,
++                                        struct mach_o_reloc_info_external * raw,
++                                        arelent *   res,
++                                        asymbol **  syms,
++                                        arelent *   res_base ATTRIBUTE_UNUSED)
+ {
+   bfd_mach_o_reloc_info reloc;
+Index: git/bfd/mach-o.c
+===================================================================
+--- git.orig/bfd/mach-o.c      2017-08-31 19:18:02.440441869 +0530
++++ git/bfd/mach-o.c   2017-08-31 19:18:02.620442777 +0530
+@@ -1496,7 +1496,7 @@
+   for (i = 0; i < count; i++)
+     {
+       if (!(*bed->_bfd_mach_o_canonicalize_one_reloc)(abfd, &native_relocs[i],
+-                                                    &res[i], syms))
++                                                    &res[i], syms, res))
+         goto err;
+     }
+   free (native_relocs);
+Index: git/bfd/mach-o.h
+===================================================================
+--- git.orig/bfd/mach-o.h      2017-08-31 19:17:51.264385450 +0530
++++ git/bfd/mach-o.h   2017-08-31 19:18:02.620442777 +0530
+@@ -746,7 +746,7 @@
+   enum bfd_architecture arch;
+   bfd_vma page_size;
+   bfd_boolean (*_bfd_mach_o_canonicalize_one_reloc)
+-    (bfd *, struct mach_o_reloc_info_external *, arelent *, asymbol **);
++  (bfd *, struct mach_o_reloc_info_external *, arelent *, asymbol **, arelent *);
+   bfd_boolean (*_bfd_mach_o_swap_reloc_out)(arelent *, bfd_mach_o_reloc_info *);
+   bfd_boolean (*_bfd_mach_o_print_thread)(bfd *, bfd_mach_o_thread_flavour *,
+                                           void *, char *);
+Index: git/bfd/ChangeLog
+===================================================================
+--- git.orig/bfd/ChangeLog     2017-08-31 19:18:02.564442494 +0530
++++ git/bfd/ChangeLog  2017-08-31 19:18:02.620442777 +0530
+@@ -11,6 +11,30 @@
+        of end pointer.
+        (evax_bfd_print_emh): Check for invalid string lengths.
++ 2017-07-24  Nick Clifton  <nickc@redhat.com>
++ 
++       PR 21813
++       * mach-o.c (bfd_mach_o_canonicalize_relocs): Pass the base address
++       of the relocs to the canonicalize_one_reloc routine.
++       * mach-o.h (struct bfd_mach_o_backend_data): Update the prototype
++       for the _bfd_mach_o_canonicalize_one_reloc field.
++       * mach-o-arm.c (bfd_mach_o_arm_canonicalize_one_reloc): Add
++       res_base parameter.  Use to check for corrupt pair relocs.
++       * mach-o-aarch64.c (bfd_mach_o_arm64_canonicalize_one_reloc):
++       Likewise.
++       * mach-o-i386.c (bfd_mach_o_i386_canonicalize_one_reloc):
++       Likewise.
++       * mach-o-x86-64.c (bfd_mach_o_x86_64_canonicalize_one_reloc):
++       Likewise.
++
++       * vms-alpha.c (_bfd_vms_slurp_eihd): Make sure that there is
++       enough data in the record before attempting to parse it.
++       (_bfd_vms_slurp_eeom): Likewise.
++
++       (_bfd_vms_slurp_egsd): Check for an invalid section index.
++       (image_set_ptr): Likewise.
++       (alpha_vms_slurp_relocs): Likewise.
++
+ 2017-07-19  Nick Clifton  <nickc@redhat.com>
+        PR 21786
+Index: git/bfd/mach-o-arm.c
+===================================================================
+--- git.orig/bfd/mach-o-arm.c  2017-08-31 19:17:51.264385450 +0530
++++ git/bfd/mach-o-arm.c       2017-08-31 19:18:02.620442777 +0530
+@@ -30,7 +30,7 @@
+ #define bfd_mach_o_mkobject bfd_mach_o_arm_mkobject
+ #define bfd_mach_o_canonicalize_one_reloc bfd_mach_o_arm_canonicalize_one_reloc
+-#define bfd_mach_o_swap_reloc_out NULL
++#define bfd_mach_o_swap_reloc_out  NULL
+ #define bfd_mach_o_bfd_reloc_type_lookup bfd_mach_o_arm_bfd_reloc_type_lookup
+ #define bfd_mach_o_bfd_reloc_name_lookup bfd_mach_o_arm_bfd_reloc_name_lookup
+@@ -147,9 +147,11 @@
+ };
+ static bfd_boolean
+-bfd_mach_o_arm_canonicalize_one_reloc (bfd *abfd,
+-                                      struct mach_o_reloc_info_external *raw,
+-                                      arelent *res, asymbol **syms)
++bfd_mach_o_arm_canonicalize_one_reloc (bfd *       abfd,
++                                      struct mach_o_reloc_info_external * raw,
++                                      arelent *   res,
++                                      asymbol **  syms,
++                                      arelent *   res_base)
+  {
+   bfd_mach_o_reloc_info reloc;
+@@ -161,6 +163,9 @@
+       switch (reloc.r_type)
+         {
+         case BFD_MACH_O_ARM_RELOC_PAIR:
++         /* PR 21813: Check for a corrupt PAIR reloc at the start.  */
++         if (res == res_base)
++           return FALSE;
+           if (reloc.r_length == 2)
+             {
+             res->howto = &arm_howto_table[7];
+Index: git/bfd/vms-alpha.c
+===================================================================
+--- git.orig/bfd/vms-alpha.c   2017-08-31 19:18:02.556442454 +0530
++++ git/bfd/vms-alpha.c        2017-08-31 19:20:56.233322607 +0530
+@@ -473,6 +473,14 @@
+   vms_debug2 ((8, "_bfd_vms_slurp_eihd\n"));
++  /* PR 21813: Check for an undersized record.  */
++  if (PRIV (recrd.buf_size) < sizeof (* eihd))
++    {
++      _bfd_error_handler (_("Corrupt EIHD record - size is too small"));
++      bfd_set_error (bfd_error_bad_value);
++      return FALSE;
++    }
++
+   size = bfd_getl32 (eihd->size);
+   imgtype = bfd_getl32 (eihd->imgtype);
+@@ -1255,19 +1263,39 @@
+           if (old_flags & EGSY__V_DEF)
+               {
+                 struct vms_esdf *esdf = (struct vms_esdf *)vms_rec;
++                long psindx;
+               entry->value = bfd_getl64 (esdf->value);
+               if (PRIV (sections) == NULL)
+                 return FALSE;
+-              entry->section = PRIV (sections)[bfd_getl32 (esdf->psindx)];
++
++                psindx = bfd_getl32 (esdf->psindx);
++                /* PR 21813: Check for an out of range index.  */
++                if (psindx < 0 || psindx >= (int) PRIV (section_count))
++                  {
++                    _bfd_error_handler (_("Corrupt EGSD record: its psindx field is too big (%#lx)"),
++                                        psindx);
++                    bfd_set_error (bfd_error_bad_value);
++                    return FALSE;
++                  }
++                entry->section = PRIV (sections)[psindx];
+                 if (old_flags & EGSY__V_NORM)
+                   {
+                     PRIV (norm_sym_count)++;
+                     entry->code_value = bfd_getl64 (esdf->code_address);
+-                    entry->code_section =
+-                      PRIV (sections)[bfd_getl32 (esdf->ca_psindx)];
++                    psindx = bfd_getl32 (esdf->ca_psindx);
++                /* PR 21813: Check for an out of range index.  */
++                    if (psindx < 0 || psindx >= (int) PRIV (section_count))
++                      {
++                        _bfd_error_handler (_("Corrupt EGSD record: its psindx field is too big (%#lx)"),
++                                            psindx);
++                        bfd_set_error (bfd_error_bad_value);
++                        return FALSE;
++                      }
++                     entry->code_section = PRIV (sections)[psindx];
++
+                   }
+               }
+         }
+@@ -1294,9 +1322,20 @@
+             if (old_flags & EGSY__V_REL)
+             {
++                long psindx;
++
+               if (PRIV (sections) == NULL)
+                 return FALSE;
+-              entry->section = PRIV (sections)[bfd_getl32 (egst->psindx)];
++                psindx = bfd_getl32 (egst->psindx);
++                /* PR 21813: Check for an out of range index.  */
++                if (psindx < 0 || psindx >= (int) PRIV (section_count))
++                  {
++                    _bfd_error_handler (_("Corrupt EGSD record: its psindx field is too big (%#lx)"),
++                                        psindx);
++                    bfd_set_error (bfd_error_bad_value);
++                    return FALSE;
++                  }
++                entry->section = PRIV (sections)[psindx];
+             }
+             else
+               entry->section = bfd_abs_section_ptr;
+@@ -1387,6 +1426,10 @@
+   if (PRIV (sections) == NULL)
+     return;
++
++  if (sect < 0 || sect >= (int) PRIV (section_count))
++    return;
++
+   sec = PRIV (sections)[sect];
+   if (info)
+@@ -2360,6 +2403,14 @@
+   vms_debug2 ((2, "EEOM\n"));
++   /* PR 21813: Check for an undersized record.  */
++   if (PRIV (recrd.buf_size) < sizeof (* eeom))
++     {
++       _bfd_error_handler (_("Corrupt EEOM record - size is too small"));
++       bfd_set_error (bfd_error_bad_value);
++       return FALSE;
++     }
++
+   PRIV (eom_data).eom_l_total_lps = bfd_getl32 (eeom->total_lps);
+   PRIV (eom_data).eom_w_comcod = bfd_getl16 (eeom->comcod);
+   if (PRIV (eom_data).eom_w_comcod > 1)
+@@ -2540,6 +2591,10 @@
+           PRIV (recrd.buf_size) = PRIV (recrd.rec_size);
+         }
++      /* PR 21813: Check for a truncated record.  */
++      if (PRIV (recrd.rec_size < test_len))
++       goto error_ret;
++
+       /* Read the remaining record.  */
+       remaining = PRIV (recrd.rec_size) - test_len;
+       to_read = MIN (VMS_BLOCK_SIZE - test_len, remaining);
+@@ -5074,7 +5129,7 @@
+               }
+             else if (cur_psidx >= 0)
+             {
+-              if (PRIV (sections) == NULL)
++                if (PRIV (sections) == NULL || cur_psidx >= (int) PRIV (section_count))
+                 return FALSE;
+               reloc->sym_ptr_ptr =
+                 PRIV (sections)[cur_psidx]->symbol_ptr_ptr;
+Index: git/binutils/ChangeLog
+===================================================================
+--- git.orig/binutils/ChangeLog        2017-08-31 19:18:01.816438718 +0530
++++ git/binutils/ChangeLog     2017-08-31 19:18:02.624442798 +0530
+@@ -1,3 +1,9 @@
++2017-07-24  Nick Clifton  <nickc@redhat.com>
++
++       PR 21813
++       * rddbg.c (read_symbol_stabs_debugging_info): Check for an empty
++       string whilst concatenating symbol names.
++
+ 2017-02-14  Nick Clifton  <nickc@redhat.com>
+       PR binutils/21157
+Index: git/binutils/rddbg.c
+===================================================================
+--- git.orig/binutils/rddbg.c  2017-08-31 19:17:51.596387126 +0530
++++ git/binutils/rddbg.c       2017-08-31 19:18:02.624442798 +0530
+@@ -300,7 +300,8 @@
+         s = i.name;
+         f = NULL;
+-        while (s[strlen (s) - 1] == '\\'
++          while (strlen (s) > 0
++                && s[strlen (s) - 1] == '\\'
+                && ps + 1 < symend)
+           {
+             char *sc, *n;
diff --git a/meta/recipes-devtools/binutils/binutils/CVE-2017-12450_12452_12453_12454_12456_1.patch b/meta/recipes-devtools/binutils/binutils/CVE-2017-12450_12452_12453_12454_12456_1.patch
new file mode 100644 (file)
index 0000000..208bbba
--- /dev/null
@@ -0,0 +1,113 @@
+commit cb06d03ad92ffcfaa09c3f065837cb39e9e1486d
+Author: Nick Clifton <nickc@redhat.com>
+Date:   Wed Jun 21 11:13:49 2017 +0100
+
+    Fix address violation parsing a corrupt IEEE Alpha binary.
+    
+       PR binutils/21637
+       * vms-alpha.c (_bfd_vms_slurp_egsd): Check for an empty section
+       list.
+       (image_set_ptr): Likewise.
+       (alpha_vms_fix_sec_rel): Likewise.
+       (alpha_vms_slurp_relocs): Likewise.
+
+Upstream-Status: Backport
+
+CVE: CVE-2017-12450, CVE-2017-12452, CVE-2017-12453, CVE-2017-12454, CVE-2017-12456
+Signed-off-by: Thiruvadi Rajaraman <trajaraman@mvista.com>
+
+Index: git/bfd/vms-alpha.c
+===================================================================
+--- git.orig/bfd/vms-alpha.c   2017-08-31 18:01:00.742098130 +0530
++++ git/bfd/vms-alpha.c        2017-08-31 18:01:06.000000000 +0530
+@@ -1257,6 +1257,8 @@
+                 struct vms_esdf *esdf = (struct vms_esdf *)vms_rec;
+               entry->value = bfd_getl64 (esdf->value);
++              if (PRIV (sections) == NULL)
++                return FALSE;
+               entry->section = PRIV (sections)[bfd_getl32 (esdf->psindx)];
+                 if (old_flags & EGSY__V_NORM)
+@@ -1291,7 +1293,11 @@
+             entry->symbol_vector = bfd_getl32 (egst->value);
+             if (old_flags & EGSY__V_REL)
+-              entry->section = PRIV (sections)[bfd_getl32 (egst->psindx)];
++            {
++              if (PRIV (sections) == NULL)
++                return FALSE;
++              entry->section = PRIV (sections)[bfd_getl32 (egst->psindx)];
++            }
+             else
+               entry->section = bfd_abs_section_ptr;
+@@ -1379,6 +1385,8 @@
+   vms_debug2 ((4, "image_set_ptr (0x%08x, sect=%d)\n", (unsigned)vma, sect));
++  if (PRIV (sections) == NULL)
++    return;
+   sec = PRIV (sections)[sect];
+   if (info)
+@@ -1691,7 +1699,12 @@
+ alpha_vms_fix_sec_rel (bfd *abfd, struct bfd_link_info *info,
+                        unsigned int rel, bfd_vma vma)
+ {
+-  asection *sec = PRIV (sections)[rel & RELC_MASK];
++  asection *sec;
++
++  if (PRIV (sections) == NULL)
++    return 0;
++
++  sec = PRIV (sections)[rel & RELC_MASK];
+   if (info)
+     {
+@@ -5000,6 +5013,8 @@
+                 return FALSE;
+               }
++          if (PRIV (sections) == NULL)
++            return FALSE;
+             sec = PRIV (sections)[cur_psect];
+             if (sec == bfd_abs_section_ptr)
+               {
+@@ -5058,8 +5073,12 @@
+                   reloc->sym_ptr_ptr = sym;
+               }
+             else if (cur_psidx >= 0)
+-              reloc->sym_ptr_ptr =
+-                PRIV (sections)[cur_psidx]->symbol_ptr_ptr;
++            {
++              if (PRIV (sections) == NULL)
++                return FALSE;
++              reloc->sym_ptr_ptr =
++                PRIV (sections)[cur_psidx]->symbol_ptr_ptr;
++            }
+             else
+               reloc->sym_ptr_ptr = NULL;
+Index: git/bfd/ChangeLog
+===================================================================
+--- git.orig/bfd/ChangeLog     2017-08-31 18:01:06.000000000 +0530
++++ git/bfd/ChangeLog  2017-08-31 18:01:49.114384620 +0530
+@@ -31,7 +31,16 @@
+        correct magic bytes at the start, set the error to wrong format
+        and clear the format selector before returning NULL.
+- 2017-06-19  Nick Clifton  <nickc@redhat.com>
++ 2017-06-21  Nick Clifton  <nickc@redhat.com>
++ 
++       PR binutils/21637
++       * vms-alpha.c (_bfd_vms_slurp_egsd): Check for an empty section
++       list.
++       (image_set_ptr): Likewise.
++       (alpha_vms_fix_sec_rel): Likewise.
++       (alpha_vms_slurp_relocs): Likewise.
++
++2017-06-19  Nick Clifton  <nickc@redhat.com>
+  
+        PR binutils/21618
+        * vms-alpha.c (evax_bfd_print_emh): Check for insufficient record