From: Mark Wielaard <mjw@redhat.com>
Date: Fri, 14 Nov 2014 15:58:36 +0000 (+0100)
Subject: libdwelf: Check the d_buf actually exists in dwelf_elf_gnu_debuglink.
X-Git-Tag: elfutils-0.161~89
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=2f8e4d338323f225a117b34f84155917a7e49271;p=thirdparty%2Felfutils.git

libdwelf: Check the d_buf actually exists in dwelf_elf_gnu_debuglink.

Signed-off-by: Mark Wielaard <mjw@redhat.com>
---

diff --git a/libdwelf/ChangeLog b/libdwelf/ChangeLog
index 9f95ea81c..342cb9cfe 100644
--- a/libdwelf/ChangeLog
+++ b/libdwelf/ChangeLog
@@ -1,3 +1,8 @@
+2014-11-14  Mark Wielaard  <mjw@redhat.com>
+
+	* dwelf_elf_gnu_debuglink.c (dwelf_elf_gnu_debuglink): Check d_buf
+	is not NULL.
+
 2014-04-30  Mark Wielaard  <mjw@redhat.com>
 
 	* Makefile.am (AM_CPPFLAGS): Add libdwfl and libebl include dirs.
diff --git a/libdwelf/dwelf_elf_gnu_debuglink.c b/libdwelf/dwelf_elf_gnu_debuglink.c
index 7b5fc93c7..6e22cf679 100644
--- a/libdwelf/dwelf_elf_gnu_debuglink.c
+++ b/libdwelf/dwelf_elf_gnu_debuglink.c
@@ -60,7 +60,7 @@ dwelf_elf_gnu_debuglink (Elf *elf, GElf_Word *crc)
 
   /* Found the .gnu_debuglink section.  Extract its contents.  */
   Elf_Data *rawdata = elf_rawdata (scn, NULL);
-  if (rawdata == NULL)
+  if (rawdata == NULL || rawdata->d_buf == NULL)
     return NULL;
 
   /* The CRC comes after the zero-terminated file name,