From: Mark Wielaard <mark@klomp.org>
Date: Tue, 16 Oct 2018 12:22:33 +0000 (+0200)
Subject: readelf: Make sure readp is smaller than cieend in print_debug_frame_section.
X-Git-Tag: elfutils-0.175~24
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=dce0b3b63ba05e2bebd4543ac9248cc0d48b2d2a;p=thirdparty%2Felfutils.git

readelf: Make sure readp is smaller than cieend in print_debug_frame_section.

We could end up with a negative length in a call to memchr.

https://sourceware.org/bugzilla/show_bug.cgi?id=23782

Signed-off-by: Mark Wielaard <mark@klomp.org>
---

diff --git a/src/ChangeLog b/src/ChangeLog
index 0cbcf80c7..602312e7f 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,8 @@
+2018-10-16  Mark Wielaard  <mark@klomp.org>
+
+	* readelf.c (print_debug_frame_section): Make sure readp is never
+	greater than cieend.
+
 2018-10-19  Mark Wielaard  <mark@klomp.org>
 
 	* dwfl_module_getdwarf.c (adjust_relocs): Check sh_entsize is not