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PR28403, null pointer dereference in disassemble_bytes

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Indexing of symbol and howto arrays wasn't checked in aout targets.

	PR 28403
	* aout-ns32k.c (MY (reloc_howto)): Sanity check howto_table index.
	Make r_index unsigned.
	(MY_swap_std_reloc_in): Make r_index unsigned.
	* aoutx.h (MOVE_ADDRESS): Sanity check symbol r_index.
	(aout_link_input_section_std): Make r_index unsigned.
	(aout_link_input_section_ext): Likewise.
	* i386lynx.c (MOVE_ADDRESS): Sanity check symbol r_index.
	(swap_ext_reloc_in, swap_std_reloc_in): Make r_index unsigned.
	* pdp11.c (MOVE_ADDRESS): Sanity check symbol r_index.
This commit is contained in:
Alan Modra
2021-10-06 10:17:29 +10:30
parent 55e3926e79
commit 0a6041ce93
4 changed files with 45 additions and 39 deletions
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3
bfd/pdp11.c
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@ -1862,7 +1862,8 @@ pdp11_aout_swap_reloc_out (bfd *abfd, arelent *g, bfd_byte *natptr)
if (r_extern) \
{ \
/* Undefined symbol. */ \
cache_ptr->sym_ptr_ptr = symbols + r_index; \
if (r_index < bfd_get_symcount (abfd)) \
cache_ptr->sym_ptr_ptr = symbols + r_index; \
cache_ptr->addend = ad; \
} \
else \