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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.
This commit is contained in:
Nick Clifton 2017-06-21 11:13:49 +01:00
parent c458d0079c
commit cb06d03ad9
2 changed files with 32 additions and 4 deletions
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9
bfd/ChangeLog
View File

@ -1,3 +1,12 @@
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.
2017-06-21 Nick Clifton <nickc@redhat.com>
PR binutils/21633

27
bfd/vms-alpha.c
View File

@ -1282,6 +1282,8 @@ _bfd_vms_slurp_egsd (bfd *abfd)
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)
@ -1316,7 +1318,11 @@ _bfd_vms_slurp_egsd (bfd *abfd)
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;
@ -1404,6 +1410,8 @@ image_set_ptr (bfd *abfd, bfd_vma vma, int sect, struct bfd_link_info *info)
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)
@ -1726,7 +1734,12 @@ static bfd_vma
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)
{
@ -5061,6 +5074,8 @@ alpha_vms_slurp_relocs (bfd *abfd)
return FALSE;
}
if (PRIV (sections) == NULL)
return FALSE;
sec = PRIV (sections)[cur_psect];
if (sec == bfd_abs_section_ptr)
{
@ -5119,8 +5134,12 @@ alpha_vms_slurp_relocs (bfd *abfd)
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;