| From 97e83a100aa8250be783304bfe0429761c6e6b6b Mon Sep 17 00:00:00 2001 |
| From: Alan Modra <amodra@gmail.com> |
| Date: Sun, 23 Apr 2017 13:55:49 +0930 |
| Subject: [PATCH] PR 21409, segfault in _bfd_dwarf2_find_nearest_line |
| |
| PR 21409 |
| * dwarf2.c (_bfd_dwarf2_find_nearest_line): Don't segfault when |
| no symbols. |
| |
| CVE: CVE-2017-8392 |
| Upstream-Status: Accepted |
| |
| Signed-off-by: Fan Xin <fan.xin@jp.fujitsu.com> |
| --- |
| bfd/dwarf2.c | 2 +- |
| 1 files changed, 1 insertions(+), 1 deletion(-) |
| |
| diff --git a/bfd/dwarf2.c b/bfd/dwarf2.c |
| index 132a674..0ef3e1f 100644 |
| --- a/bfd/dwarf2.c |
| +++ b/bfd/dwarf2.c |
| @@ -4205,7 +4205,7 @@ _bfd_dwarf2_find_nearest_line (bfd *abfd, |
| looking up the function by section + offset uses the |
| DW_AT_decl_line from the function DW_TAG_subprogram for the line, |
| which will be the line of the function name. */ |
| - if ((section->flags & SEC_CODE) == 0) |
| + if (symbols != NULL && (section->flags & SEC_CODE) == 0) |
| { |
| asymbol **tmp; |
| |
| -- |
| 1.9.1 |
| |