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Fix invalid memory access in the BFD library's DWARF parser.

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PR binutils/21151
	* dwarf2.c (_bfd_dwarf2_find_nearest_line): Check for an invalid
	unit length field.
This commit is contained in:
Nick Clifton
2017-02-13 17:51:27 +00:00
parent 3c6452ae8d
commit d11135f552
2 changed files with 10 additions and 0 deletions
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6
bfd/ChangeLog
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@ -1,3 +1,9 @@
2017-02-13 Nick Clifton <nickc@redhat.com>
PR binutils/21151
* dwarf2.c (_bfd_dwarf2_find_nearest_line): Check for an invalid
unit length field.
2017-02-07 Andrew Waterman <andrew@sifive.com> 2017-02-07 Andrew Waterman <andrew@sifive.com>
* elfnn-riscv.c (riscv_elf_finish_dynamic_sections): Only write PLT * elfnn-riscv.c (riscv_elf_finish_dynamic_sections): Only write PLT

4
bfd/dwarf2.c
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@ -4294,6 +4294,10 @@ _bfd_dwarf2_find_nearest_line (bfd *abfd,
{ {
bfd_byte * new_ptr; bfd_byte * new_ptr;
/* PR 21151 */
if (stash->info_ptr + length > stash->info_ptr_end)
return FALSE;
each = parse_comp_unit (stash, length, info_ptr_unit, each = parse_comp_unit (stash, length, info_ptr_unit,
offset_size); offset_size);
if (!each) if (!each)