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Add patch from lersek to fix UEFI Windows dual-boot

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Resolves: rhbz#1347291

Signed-off-by: Adam Williamson <awilliam@redhat.com>
This commit is contained in:
Adam Williamson 2016-11-21 19:00:22 -08:00 committed by Peter Jones
parent 7c83ceb432
commit ced107a476
2 changed files with 47 additions and 1 deletions
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38
20000-efi-chainloader-fix-wrong-sanity-check-in-relocate_c.patch Normal file
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@ -0,0 +1,38 @@
From 725f07ed1e4e18836f54a0a798a8b1e720fae783 Mon Sep 17 00:00:00 2001
From: Laszlo Ersek <lersek@redhat.com>
Date: Mon, 21 Nov 2016 15:34:00 +0100
Subject: [PATCH] efi/chainloader: fix wrong sanity check in relocate_coff()
In relocate_coff(), the relocation entries are parsed from the original
image (not the section-wise copied image). The original image is
pointed-to by the "orig" pointer. The current check
(void *)reloc_end < data
compares the addresses of independent memory allocations. "data" is a typo
here, it should be "orig".
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1347291
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Tested-by: Bogdan Costescu <bcostescu@gmail.com>
Tested-by: Juan Orti <j.orti.alcaine@gmail.com>
---
grub-core/loader/efi/chainloader.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/grub-core/loader/efi/chainloader.c b/grub-core/loader/efi/chainloader.c
index 49a7662fa605..1bd7ffb3160e 100644
--- a/grub-core/loader/efi/chainloader.c
+++ b/grub-core/loader/efi/chainloader.c
@@ -397,7 +397,7 @@ relocate_coff (pe_coff_loader_image_context_t *context,
reloc_end = (struct grub_pe32_fixup_block *)
((char *)reloc_base + reloc_base->size);
- if ((void *)reloc_end < data || (void *)reloc_end > image_end)
+ if ((void *)reloc_end < orig || (void *)reloc_end > image_end)
{
grub_error (GRUB_ERR_BAD_ARGUMENT, "Reloc entry %d overflows binary",
n);
--
2.9.2

10
grub2.spec
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@ -45,7 +45,7 @@
Name: grub2
Epoch: 1
Version: 2.02
Release: 0.34%{?dist}
Release: 0.35%{?dist}
Summary: Bootloader with support for Linux, Multiboot and more
Group: System Environment/Base
@ -72,6 +72,12 @@ Patch10004: 10004-Add-grub_qdprintf-grub_dprintf-without-the-file-lin.patch
Patch10005: 10005-Make-a-gdb-dprintf-that-tells-us-load-addresses.patch
#Patch10006: 10006-Try-it-in-gentpl-again.patch
# This is: https://bugzilla.redhat.com/attachment.cgi?id=1222471
# From: https://bugzilla.redhat.com/show_bug.cgi?id=1347291
# Patch by Laszlo Ersek to fix a bad sanity check which causes issues
# with UEFI Windows dual boot. Should be sent upstream.
Patch20000: 20000-efi-chainloader-fix-wrong-sanity-check-in-relocate_c.patch
BuildRequires: flex bison binutils python
BuildRequires: ncurses-devel xz-devel bzip2-devel
BuildRequires: freetype-devel libusb-devel
@ -547,6 +553,8 @@ fi
%changelog
* Thu Dec 01 2016 Peter Jones <pjones@redhat.com> - 2.02-0.34
- Fix power6 makefile bits for newer autoconf defaults.
- efi/chainloader: fix wrong sanity check in relocate_coff() (Laszlo Ersek)
Resolves: rhbz#1347291
* Thu Aug 25 2016 Peter Jones <pjones@redhat.com> - 2.02-0.34
- Update to be newer than f24's branch.