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1 From 97e83a100aa8250be783304bfe0429761c6e6b6b Mon Sep 17 00:00:00 2001
2 From: Alan Modra <amodra@gmail.com>
3 Date: Sun, 23 Apr 2017 13:55:49 +0930
4 Subject: [PATCH] PR 21409, segfault in _bfd_dwarf2_find_nearest_line
5
6         PR 21409
7         * dwarf2.c (_bfd_dwarf2_find_nearest_line): Don't segfault when
8         no symbols.
9
10 CVE: CVE-2017-8392
11 Upstream-Status: Accepted
12
13 Signed-off-by: Fan Xin <fan.xin@jp.fujitsu.com>
14 ---
15  bfd/dwarf2.c  | 2 +-
16  1 files changed, 1 insertions(+), 1 deletion(-)
17
18 diff --git a/bfd/dwarf2.c b/bfd/dwarf2.c
19 index 132a674..0ef3e1f 100644
20 --- a/bfd/dwarf2.c
21 +++ b/bfd/dwarf2.c
22 @@ -4205,7 +4205,7 @@ _bfd_dwarf2_find_nearest_line (bfd *abfd,
23           looking up the function by section + offset uses the
24           DW_AT_decl_line from the function DW_TAG_subprogram for the line,
25           which will be the line of the function name.  */
26 -      if ((section->flags & SEC_CODE) == 0)
27 +      if (symbols != NULL && (section->flags & SEC_CODE) == 0)
28         {
29           asymbol **tmp;
30  
31 -- 
32 1.9.1
33