use memmove instead of memcpy to prevent memory overlap corruption(#760657)

ncompress-4.2.4-memmove.patch

@@ -0,0 +1,12 @@
+diff -urNp ncompress-4.2.4-orig/compress42.c ncompress-4.2.4/compress42.c
+--- ncompress-4.2.4-orig/compress42.c	2012-01-03 15:13:58.014222927 +0100
++++ ncompress-4.2.4/compress42.c	2012-01-03 15:15:17.117097419 +0100
+@@ -1441,7 +1441,7 @@ compress(fdin, fdout)
+ 					boff = -(((OBUFSIZ<<3)-boff)%(n_bits<<3));
+ 					bytes_out += OBUFSIZ;
+ 
+-					memcpy(outbuf, outbuf+OBUFSIZ, (outbits>>3)+1);
++					memmove(outbuf, outbuf+OBUFSIZ, (outbits>>3)+1);
+ 					memset(outbuf+(outbits>>3)+1, '\0', OBUFSIZ);
+ 				}
+ 

ncompress.spec

@@ -1,7 +1,7 @@
 Summary: Fast compression and decompression utilities
 Name: ncompress
 Version: 4.2.4
-Release: 55%{?dist}
+Release: 56%{?dist}
 License: Public Domain
 Group: Applications/File
 URL:    http://ncompress.sourceforge.net/
@@ -14,6 +14,7 @@ Patch4: ncompress-4.2.4-zerobyteforce.patch
 Patch5: ncompress-4.2.4-bssUnderflow.patch
 Patch6: ncompress-4.2.4-endians.patch
 Patch7: ncompress-4.2.4-uncheckedmalloc.patch
+Patch8: ncompress-4.2.4-memmove.patch
 BuildRequires: gcc glibc-devel fileutils
 BuildRoot: %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
 
@@ -37,6 +38,7 @@ which are compatible with the original UNIX compress utility.
 %patch5 -p1 -b .bssUnderflow
 %patch6 -p1 -b .endians
 %patch7 -p1 -b .malloccheck
+%patch8 -p1 -b .memmove
 mv Makefile.def Makefile
 
 %build
@@ -74,6 +76,10 @@ rm -rf $RPM_BUILD_ROOT
 %doc LZW.INFO README
 
 %changelog
+* Tue Jan 03 2012 Ondrej Vasik <ovasik@redhat.com> - 4.2.4-56
+- use memmove instead of memcpy to prevent memory overlap corruption
+ (#760657)
+
 * Tue Feb 08 2011 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 4.2.4-55
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_15_Mass_Rebuild