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PR binutils/22875: IQ2000/ELF: Prevent an out-of-bounds howto table access

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Prevent an out-of-bounds `iq2000_elf_howto_table' table access in
`iq2000_info_to_howto_rela' by using the size of the table rather than
R_IQ2000_max to determine the number of entries in the contiguous
regular IQ2000 relocation range defined and described in the table.

	bfd/
	* elf32-iq2000.c (iq2000_info_to_howto_rela): Correct the range
	check for `iq2000_elf_howto_table' table access.
This commit is contained in:
Maciej W. Rozycki 2018-04-04 02:00:49 +01:00
parent f428698edf
commit 0cc919dc6a
2 changed files with 7 additions and 1 deletions
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5
bfd/ChangeLog
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@ -1,3 +1,8 @@
2018-04-04 Maciej W. Rozycki <macro@mips.com>
* elf32-iq2000.c (iq2000_info_to_howto_rela): Correct the range
check for `iq2000_elf_howto_table' table access.
2018-04-04 Maciej W. Rozycki <macro@mips.com>
* elf32-frv.c (frv_info_to_howto_rela): Correct the range check

3
bfd/elf32-iq2000.c
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@ -22,6 +22,7 @@
#include "libbfd.h"
#include "elf-bfd.h"
#include "elf/iq2000.h"
#include "libiberty.h"
/* Forward declarations. */
@ -435,7 +436,7 @@ iq2000_info_to_howto_rela (bfd * abfd ATTRIBUTE_UNUSED,
break;
default:
if (r_type >= (unsigned int) R_IQ2000_max)
if (r_type >= ARRAY_SIZE (iq2000_elf_howto_table))
{
/* xgettext:c-format */
_bfd_error_handler (_("%pB: unsupported relocation type %#x"),