devel/syslinux syslinux-fix-menu-memory-clobber.patch, NONE, 1.1 syslinux.spec, 1.46, 1.47

[Jeremy Katz (katzj)]

Author: katzj

Update of /cvs/pkgs/devel/syslinux
In directory cvs-int.fedora.redhat.com:/tmp/cvs-serv31956

Modified Files:
	syslinux.spec 
Added Files:
	syslinux-fix-menu-memory-clobber.patch 
Log Message:
* Wed Oct  3 2007 Jeremy Katz <katzj at redhat.com> - 3.36-6
- fix menu system memory corruption (#239585)


syslinux-fix-menu-memory-clobber.patch:

--- NEW FILE syslinux-fix-menu-memory-clobber.patch ---
From: H. Peter Anvin <hpa at zytor.com>
Date: Fri, 21 Sep 2007 23:22:58 +0000 (-0700)
Subject: comboot: fix memory overwrite bug
X-Git-Tag: syslinux-3.52-pre9~2
X-Git-Url: http://git.kernel.org/?p=boot%2Fsyslinux%2Fsyslinux.git;a=commitdiff_plain;h=426d986dbc77abf2247b08c44c18bf9a478c2e8e

comboot: fix memory overwrite bug

Fix memory overwrite bug, specifically, the use of BP after it might
have gotten clobbered.  Since at the point of use, BP is supposed to
be == SP, we can just add "mov bp,sp".
---

diff --git a/comboot.inc b/comboot.inc
index 3c9df5f..ffc9425 100644
--- a/comboot.inc
+++ b/comboot.inc
@@ -187,6 +187,7 @@ comboot_int21:	cli
 		clc
 		call ax			; Call the invoked function
 comboot_resume:
+		mov bp,sp		; In case the function clobbers BP
 		setc P_FLAGSL		; Propagate CF->error
 		popad
 		pop gs


Index: syslinux.spec
===================================================================
RCS file: /cvs/pkgs/devel/syslinux/syslinux.spec,v
retrieving revision 1.46
retrieving revision 1.47
diff -u -r1.46 -r1.47
--- syslinux.spec	14 Aug 2007 17:46:34 -0000	1.46
+++ syslinux.spec	3 Oct 2007 17:19:46 -0000	1.47
@@ -2,7 +2,7 @@
 Name: syslinux
 Version: 3.36
 %define tarball_version 3.36
-Release: 5%{?dist}
+Release: 6%{?dist}
 License: GPL
 Group: Applications/System
 Source0: ftp://ftp.kernel.org/pub/linux/utils/boot/syslinux/%{name}-%{tarball_version}.tar.bz2
@@ -10,6 +10,7 @@
 Patch3: syslinux-3.36.patch
 Patch4: syslinux-3.36-16bpp.patch
 Patch5: syslinux-hiddenmenu.patch
+Patch6: syslinux-fix-menu-memory-clobber.patch
 ExclusiveArch: i386 x86_64
 Buildroot: %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
 BuildRequires: nasm >= 0.98.38-1, perl, netpbm-progs
@@ -40,6 +41,7 @@
 %patch3 -p1
 %patch4 -p1
 %patch5 -p1
+%patch6 -p1
 
 %build
 CFLAGS="-Werror -Wno-unused -finline-limit=2000"
@@ -97,6 +99,9 @@
 %{_prefix}/lib/syslinux/com32
 
 %changelog
+* Wed Oct  3 2007 Jeremy Katz <katzj at redhat.com> - 3.36-6
+- fix menu system memory corruption (#239585)
+
 * Tue Aug 14 2007 Jeremy Katz <katzj at redhat.com> - 3.36-5
 - backport "menu hidden" support from upstream git