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Prevent an illegal memory access via an out of range fixup pointer. 

PR 23061
	* coffgen.c (coff_pointerize_aux): Check for an out of range
	fixup.
This commit is contained in:
Nick Clifton 2018-04-16 12:59:37 +01:00
parent ddb000396c
commit e9af4700bc
2 changed files with 10 additions and 2 deletions
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6
bfd/ChangeLog
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@ -1,3 +1,9 @@
2018-04-16 Nick Clifton <nickc@redhat.com>
PR 23061
* coffgen.c (coff_pointerize_aux): Check for an out of range
fixup.
2018-04-16 Alan Modra <amodra@gmail.com>
* Makefile.am: Remove arm-epoc-pe support.

6
bfd/coffgen.c
View File

@ -835,7 +835,7 @@ coff_mangle_symbols (bfd *bfd_ptr)
for (i = 0; i < s->u.syment.n_numaux; i++)
{
combined_entry_type *a = s + i + 1;
BFD_ASSERT (! a->is_sym);
if (a->fix_tag)
{
@ -1547,7 +1547,9 @@ coff_pointerize_aux (bfd *abfd,
if ((ISFCN (type) || ISTAG (n_sclass) || n_sclass == C_BLOCK
|| n_sclass == C_FCN)
&& auxent->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l > 0)
&& auxent->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l > 0
&& auxent->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l
< (long) obj_raw_syment_count (abfd))
{
auxent->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p =
table_base + auxent->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l;