* [PATCH] libdw: Check diridx is valid under DW_LNE_define_file in dwarf_getsrclines.
@ 2014-12-16 21:48 Mark Wielaard
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From: Mark Wielaard @ 2014-12-16 21:48 UTC (permalink / raw)
To: elfutils-devel
[-- Attachment #1: Type: text/plain, Size: 1160 bytes --]
Signed-off-by: Mark Wielaard <mjw@redhat.com>
---
libdw/ChangeLog | 5 +++++
libdw/dwarf_getsrclines.c | 5 +++++
2 files changed, 10 insertions(+)
diff --git a/libdw/ChangeLog b/libdw/ChangeLog
index 4f03b73..61c9871 100644
--- a/libdw/ChangeLog
+++ b/libdw/ChangeLog
@@ -1,5 +1,10 @@
2014-12-16 Mark Wielaard <mjw@redhat.com>
+ * dwarf_getsrclines.c (read_srclines): Check diridx is valid under
+ DW_LNE_define_file.
+
+2014-12-16 Mark Wielaard <mjw@redhat.com>
+
* dwarf_getpubnames.c (dwarf_getpubnames): Make sure there is enough
space to read die offset.
diff --git a/libdw/dwarf_getsrclines.c b/libdw/dwarf_getsrclines.c
index d477944..053b30f 100644
--- a/libdw/dwarf_getsrclines.c
+++ b/libdw/dwarf_getsrclines.c
@@ -469,6 +469,11 @@ read_srclines (Dwarf *dbg,
if (unlikely (linep >= lineendp))
goto invalid_data;
get_uleb128 (diridx, linep, lineendp);
+ if (unlikely (diridx >= ndirlist))
+ {
+ __libdw_seterrno (DWARF_E_INVALID_DIR_IDX);
+ goto invalid_data;
+ }
Dwarf_Word mtime;
if (unlikely (linep >= lineendp))
goto invalid_data;
--
2.1.0
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2014-12-16 21:48 [PATCH] libdw: Check diridx is valid under DW_LNE_define_file in dwarf_getsrclines Mark Wielaard
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