From d11135f55294d75099ad03f81bacbe8ae93a6b28 Mon Sep 17 00:00:00 2001 From: Nick Clifton Date: Mon, 13 Feb 2017 17:51:27 +0000 Subject: Fix invalid memory access in the BFD library's DWARF parser. PR binutils/21151 * dwarf2.c (_bfd_dwarf2_find_nearest_line): Check for an invalid unit length field. --- bfd/ChangeLog | 6 ++++++ bfd/dwarf2.c | 4 ++++ 2 files changed, 10 insertions(+) (limited to 'bfd') diff --git a/bfd/ChangeLog b/bfd/ChangeLog index f21d654..1c3d701 100644 --- a/bfd/ChangeLog +++ b/bfd/ChangeLog @@ -1,3 +1,9 @@ +2017-02-13 Nick Clifton + + PR binutils/21151 + * dwarf2.c (_bfd_dwarf2_find_nearest_line): Check for an invalid + unit length field. + 2017-02-07 Andrew Waterman * elfnn-riscv.c (riscv_elf_finish_dynamic_sections): Only write PLT diff --git a/bfd/dwarf2.c b/bfd/dwarf2.c index 3699587..6b111d3 100644 --- a/bfd/dwarf2.c +++ b/bfd/dwarf2.c @@ -4294,6 +4294,10 @@ _bfd_dwarf2_find_nearest_line (bfd *abfd, { 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, offset_size); if (!each) -- cgit v1.1