* [PATCH] readelf: Check length for nexthdr overflow in print_debug_aranges_section.
@ 2014-11-23 23:20 Mark Wielaard
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From: Mark Wielaard @ 2014-11-23 23:20 UTC (permalink / raw)
To: elfutils-devel
[-- Attachment #1: Type: text/plain, Size: 986 bytes --]
Signed-off-by: Mark Wielaard <mjw@redhat.com>
---
src/ChangeLog | 5 +++++
src/readelf.c | 2 +-
2 files changed, 6 insertions(+), 1 deletion(-)
diff --git a/src/ChangeLog b/src/ChangeLog
index aa16b67..19509dc 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,8 @@
+2014-11-23 Mark Wielaard <mjw@redhat.com>
+
+ * readelf.c (print_debug_aranges_section): Check length to catch
+ nexthdr overflow.
+
2014-11-21 Mark Wielaard <mjw@redhat.com>
* readelf.c (print_attributes): Guard against empty section.
diff --git a/src/readelf.c b/src/readelf.c
index 9bae66d..ffc14fd 100644
--- a/src/readelf.c
+++ b/src/readelf.c
@@ -4693,7 +4693,7 @@ print_debug_aranges_section (Dwfl_Module *dwflmod __attribute__ ((unused)),
printf (gettext ("\n Length: %6" PRIu64 "\n"),
(uint64_t) length);
- if (nexthdr > readendp)
+ if (length > readendp - readp)
goto invalid_data;
if (length == 0)
--
1.9.3
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2014-11-23 23:20 [PATCH] readelf: Check length for nexthdr overflow in print_debug_aranges_section Mark Wielaard
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