File libmspack-mszipd-inflate-off-by-one.patch of Package libmspack

Overview Repositories Revisions Requests Users Attributes Meta

File libmspack-mszipd-inflate-off-by-one.patch of Package libmspack (Revision 69a8d4cc4728ca7c15279355f37f3a1b)

Currently displaying revision 69a8d4cc4728ca7c15279355f37f3a1b , Show latest

From 3673b713d15bbd3ce564b8e313a121bad23aa362 Mon Sep 17 00:00:00 2001
From: Stuart Caie <kyzer@4u.net>
Date: Sun, 18 Jan 2015 14:38:56 +0000
Subject: [PATCH] distance codes are 0-29, not 0-30

---
 libmspack/trunk/ChangeLog       | 3 +++
 libmspack/trunk/mspack/mszipd.c | 2 +-
 2 files changed, 4 insertions(+), 1 deletion(-)

#diff --git a/libmspack/trunk/ChangeLog b/libmspack/trunk/ChangeLog
#index 5374ac8..97eb31b 100644
#--- a/libmspack/trunk/ChangeLog
#+++ b/libmspack/trunk/ChangeLog
#@@ -6,6 +6,9 @@
# 	two blocks, leaving just 1 byte in the read buffer. Thanks to Jakub
# 	Wilk for finding the issue and providing a sample file.
# 
#+	* inflate(): off-by-one error. Distance codes are 0-29, not 0-30.
#+	Thanks to Jakub Wilk again.
#+
# 2015-01-17  Stuart Caie <kyzer@4u.net>
# 
# 	* GET_UTF8_CHAR(): Remove 5/6-byte encoding support and check decoded
diff --git a/libmspack/trunk/mspack/mszipd.c b/libmspack/trunk/mspack/mszipd.c
index cd85bb9..5b4756d 100644
--- a/libmspack/trunk/mspack/mszipd.c
+++ b/libmspack/trunk/mspack/mszipd.c
@@ -264,7 +264,7 @@ static int inflate(struct mszipd_stream *zip) {
 	  length += lit_lengths[code];
 
 	  READ_HUFFSYM(DISTANCE, code);
-	  if (code > 30) return INF_ERR_DISTCODE;
+	  if (code >= 30) return INF_ERR_DISTCODE;
 	  READ_BITS_T(distance, dist_extrabits[code]);
 	  distance += dist_offsets[code];
 
-- 
2.4.3

Places

File libmspack-mszipd-inflate-off-by-one.patch of Package libmspack (Revision 69a8d4cc4728ca7c15279355f37f3a1b)

Places