2014-02-19 20:10:18 +01:00
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################################################################################
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#
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# grub2
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#
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################################################################################
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2019-09-18 19:04:47 +02:00
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GRUB2_VERSION = 2.04
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2017-04-26 23:39:46 +02:00
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GRUB2_SITE = http://ftp.gnu.org/gnu/grub
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2014-02-19 20:10:18 +01:00
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GRUB2_SOURCE = grub-$(GRUB2_VERSION).tar.xz
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2017-03-30 15:43:33 +02:00
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GRUB2_LICENSE = GPL-3.0+
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2014-02-19 20:10:18 +01:00
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GRUB2_LICENSE_FILES = COPYING
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2018-09-27 00:37:15 +02:00
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GRUB2_DEPENDENCIES = host-bison host-flex host-grub2
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HOST_GRUB2_DEPENDENCIES = host-bison host-flex
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GRUB2_INSTALL_IMAGES = YES
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2018-09-27 00:37:16 +02:00
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boot/grub2: Fix GRUB i386-pc build with Ubuntu gcc
Backport a patch from upstream to fix the build on certain versions of
gsc, notably:
Ubuntu 19.10 with gcc (Ubuntu 8.3.0-26ubuntu1~19.10) 8.3.0
Ubuntu 19.10 with gcc (Ubuntu 9.2.1-9ubuntu2) 9.2.1 20191008
The upstream patch is simply a change in the gentpl.py script, which is
used to generate parts of the automake machinery, so if we just backport
the upstream patch, we need to call the script to regenerate those files.
However, the modified script is a python script, so we would need to add
a dependency on host-python (2 or 3), which is not so nice.
Furthermore, calling the script is not enough: it needs a specific set
of optionss for each file it is to generate. That set of options is not
static; it is constructed in the convoluted autogen.sh. Calling
autogen.sh is usally not so good an idea in the Buildroot context, and
indeed this fails becasue it calls to autoreconf, but without our
carefuly crafted options and environment variables.
There was a little light in the tunnel, in that autogen.sh can be told
not to run autoreconf, by setting the environemnt variable
FROM_BOOTSTRAP to an non-=empty string, but this is fraught with various
other side-effects, as in that cause, autogen.sh expects to be valled by
an upper sciopt, bootstrap, which is not provided in the tarball
distribution...
So, between all those issues, autogen, bootstrap, and a host-python (2
or 3) dependency, we choose another route: path the script *and* the one
generated file affected by the change. Since that patched file is a .am
file, we also patch the corresponding .in file
However, we're faced with another issue: the other generated file is
now older than the script, so the automake machinery will now want to
re-run autoconf et al during the build step, which is still not a good
idea for us. So we touch the other generated file so it is mopre recent
than the script.
This is still not sufficient, because the patched file also has a
dependency on the generated file, so we need to touch as well.
Fixes:
- https://bugs.buildroot.org/show_bug.cgi?id=12946
Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
[yann.morin.1998@free.fr:
- keep the hunk about patching gentpl.py
- make it a git-formatted patch
- add the touch
- drastically expand the commit log
]
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
2020-05-28 23:50:15 +02:00
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# 0001-build-Fix-GRUB-i386-pc-build-with-Ubuntu-gcc.patch
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define GRUB2_AVOID_AUTORECONF
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$(Q)touch $(@D)/Makefile.util.am
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$(Q)touch $(@D)/Makefile.in
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endef
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GRUB2_POST_PATCH_HOOKS += GRUB2_AVOID_AUTORECONF
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HOST_GRUB2_POST_PATCH_HOOKS += GRUB2_AVOID_AUTORECONF
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boot/grub2: Backport Boothole securify fixes
Details: https://lists.gnu.org/archive/html/grub-devel/2020-07/msg00034.html
Fixes the following security issues:
* CVE-2020-10713
A flaw was found in grub2, prior to version 2.06. An attacker may
use the GRUB 2 flaw to hijack and tamper the GRUB verification
process. This flaw also allows the bypass of Secure Boot
protections. In order to load an untrusted or modified kernel, an
attacker would first need to establish access to the system such as
gaining physical access, obtain the ability to alter a pxe-boot
network, or have remote access to a networked system with root
access. With this access, an attacker could then craft a string to
cause a buffer overflow by injecting a malicious payload that leads
to arbitrary code execution within GRUB. The highest threat from
this vulnerability is to data confidentiality and integrity as well
as system availability.
* CVE-2020-14308
In grub2 versions before 2.06 the grub memory allocator doesn't
check for possible arithmetic overflows on the requested allocation
size. This leads the function to return invalid memory allocations
which can be further used to cause possible integrity,
confidentiality and availability impacts during the boot process.
* CVE-2020-14309
There's an issue with grub2 in all versions before 2.06 when
handling squashfs filesystems containing a symbolic link with name
length of UINT32 bytes in size. The name size leads to an
arithmetic overflow leading to a zero-size allocation further
causing a heap-based buffer overflow with attacker controlled data.
* CVE-2020-14310
An integer overflow in read_section_from_string may lead to a heap
based buffer overflow.
* CVE-2020-14311
An integer overflow in grub_ext2_read_link may lead to a heap-based
buffer overflow.
* CVE-2020-15706
GRUB2 contains a race condition in grub_script_function_create()
leading to a use-after-free vulnerability which can be triggered by
redefining a function whilst the same function is already
executing, leading to arbitrary code execution and secure boot
restriction bypass
* CVE-2020-15707
Integer overflows were discovered in the functions grub_cmd_initrd
and grub_initrd_init in the efilinux component of GRUB2, as shipped
in Debian, Red Hat, and Ubuntu (the functionality is not included
in GRUB2 upstream), leading to a heap-based buffer overflow. These
could be triggered by an extremely large number of arguments to the
initrd command on 32-bit architectures, or a crafted filesystem
with very large files on any architecture. An attacker could use
this to execute arbitrary code and bypass UEFI Secure Boot
restrictions. This issue affects GRUB2 version 2.04 and prior
versions.
Signed-off-by: Stefan Sørensen <stefan.sorensen@spectralink.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2020-08-03 10:00:25 +02:00
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# 0002-yylex-Make-lexer-fatal-errors-actually-be-fatal.patch
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GRUB2_IGNORE_CVES += CVE-2020-10713
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# 0005-calloc-Use-calloc-at-most-places.patch
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GRUB2_IGNORE_CVES += CVE-2020-14308
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# 0006-malloc-Use-overflow-checking-primitives-where-we-do-.patch
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GRUB2_IGNORE_CVES += CVE-2020-14309 CVE-2020-14310 CVE-2020-14311
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# 0019-script-Avoid-a-use-after-free-when-redefining-a-func.patch
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GRUB2_IGNORE_CVES += CVE-2020-15706
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# 0028-linux-Fix-integer-overflows-in-initrd-size-handling.patch
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GRUB2_IGNORE_CVES += CVE-2020-15707
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2018-09-27 00:37:16 +02:00
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ifeq ($(BR2_TARGET_GRUB2_INSTALL_TOOLS),y)
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GRUB2_INSTALL_TARGET = YES
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else
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2018-09-27 00:37:15 +02:00
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GRUB2_INSTALL_TARGET = NO
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2018-09-27 00:37:16 +02:00
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endif
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2014-02-19 20:10:18 +01:00
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2014-07-01 19:49:47 +02:00
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GRUB2_BUILTIN_MODULES = $(call qstrip,$(BR2_TARGET_GRUB2_BUILTIN_MODULES))
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GRUB2_BUILTIN_CONFIG = $(call qstrip,$(BR2_TARGET_GRUB2_BUILTIN_CONFIG))
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GRUB2_BOOT_PARTITION = $(call qstrip,$(BR2_TARGET_GRUB2_BOOT_PARTITION))
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2014-02-19 20:10:18 +01:00
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ifeq ($(BR2_TARGET_GRUB2_I386_PC),y)
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GRUB2_IMAGE = $(BINARIES_DIR)/grub.img
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GRUB2_CFG = $(TARGET_DIR)/boot/grub/grub.cfg
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2014-07-01 19:49:47 +02:00
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GRUB2_PREFIX = ($(GRUB2_BOOT_PARTITION))/boot/grub
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2014-02-19 20:10:18 +01:00
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GRUB2_TUPLE = i386-pc
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GRUB2_TARGET = i386
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GRUB2_PLATFORM = pc
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else ifeq ($(BR2_TARGET_GRUB2_I386_EFI),y)
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GRUB2_IMAGE = $(BINARIES_DIR)/efi-part/EFI/BOOT/bootia32.efi
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GRUB2_CFG = $(BINARIES_DIR)/efi-part/EFI/BOOT/grub.cfg
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GRUB2_PREFIX = /EFI/BOOT
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GRUB2_TUPLE = i386-efi
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GRUB2_TARGET = i386
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GRUB2_PLATFORM = efi
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else ifeq ($(BR2_TARGET_GRUB2_X86_64_EFI),y)
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GRUB2_IMAGE = $(BINARIES_DIR)/efi-part/EFI/BOOT/bootx64.efi
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GRUB2_CFG = $(BINARIES_DIR)/efi-part/EFI/BOOT/grub.cfg
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GRUB2_PREFIX = /EFI/BOOT
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GRUB2_TUPLE = x86_64-efi
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GRUB2_TARGET = x86_64
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GRUB2_PLATFORM = efi
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2018-09-27 00:37:17 +02:00
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else ifeq ($(BR2_TARGET_GRUB2_ARM_UBOOT),y)
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GRUB2_IMAGE = $(BINARIES_DIR)/boot-part/grub/grub.img
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GRUB2_CFG = $(BINARIES_DIR)/boot-part/grub/grub.cfg
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GRUB2_PREFIX = ($(GRUB2_BOOT_PARTITION))/boot/grub
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GRUB2_TUPLE = arm-uboot
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GRUB2_TARGET = arm
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GRUB2_PLATFORM = uboot
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else ifeq ($(BR2_TARGET_GRUB2_ARM_EFI),y)
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GRUB2_IMAGE = $(BINARIES_DIR)/efi-part/EFI/BOOT/bootarm.efi
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GRUB2_CFG = $(BINARIES_DIR)/efi-part/EFI/BOOT/grub.cfg
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GRUB2_PREFIX = /EFI/BOOT
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GRUB2_TUPLE = arm-efi
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GRUB2_TARGET = arm
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GRUB2_PLATFORM = efi
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else ifeq ($(BR2_TARGET_GRUB2_ARM64_EFI),y)
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GRUB2_IMAGE = $(BINARIES_DIR)/efi-part/EFI/BOOT/bootaa64.efi
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GRUB2_CFG = $(BINARIES_DIR)/efi-part/EFI/BOOT/grub.cfg
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GRUB2_PREFIX = /EFI/BOOT
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GRUB2_TUPLE = arm64-efi
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GRUB2_TARGET = aarch64
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GRUB2_PLATFORM = efi
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2014-02-19 20:10:18 +01:00
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endif
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# Grub2 is kind of special: it considers CC, LD and so on to be the
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2018-09-27 00:37:15 +02:00
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# tools to build the host programs and uses TARGET_CC, TARGET_CFLAGS,
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# TARGET_CPPFLAGS, TARGET_LDFLAGS to build the bootloader itself.
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2016-05-21 22:11:09 +02:00
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#
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2017-07-01 14:51:21 +02:00
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# NOTE: TARGET_STRIP is overridden by !BR2_STRIP_strip, so always
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2016-05-21 22:11:09 +02:00
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# use the cross compile variant to ensure grub2 builds
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2014-02-19 20:10:18 +01:00
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2018-09-27 00:37:15 +02:00
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HOST_GRUB2_CONF_ENV = \
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CPP="$(HOSTCC) -E"
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2014-02-19 20:10:18 +01:00
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GRUB2_CONF_ENV = \
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2018-09-27 00:37:15 +02:00
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CPP="$(TARGET_CC) -E" \
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2014-02-19 20:10:18 +01:00
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TARGET_CC="$(TARGET_CC)" \
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2018-04-19 10:36:59 +02:00
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TARGET_CFLAGS="$(TARGET_CFLAGS)" \
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TARGET_CPPFLAGS="$(TARGET_CPPFLAGS) -fno-stack-protector" \
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2015-09-08 23:30:41 +02:00
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TARGET_LDFLAGS="$(TARGET_LDFLAGS)" \
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2018-09-27 00:37:15 +02:00
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TARGET_NM="$(TARGET_NM)" \
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TARGET_OBJCOPY="$(TARGET_OBJCOPY)" \
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TARGET_STRIP="$(TARGET_CROSS)strip"
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2014-02-19 20:10:18 +01:00
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2014-09-27 21:32:44 +02:00
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GRUB2_CONF_OPTS = \
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2014-02-19 20:10:18 +01:00
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--target=$(GRUB2_TARGET) \
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--with-platform=$(GRUB2_PLATFORM) \
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2017-07-05 13:14:47 +02:00
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--prefix=/ \
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--exec-prefix=/ \
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2014-02-19 20:10:18 +01:00
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--disable-grub-mkfont \
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--enable-efiemu=no \
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2016-06-14 17:11:18 +02:00
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ac_cv_lib_lzma_lzma_code=no \
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2014-02-19 20:10:18 +01:00
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--enable-device-mapper=no \
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--enable-libzfs=no \
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--disable-werror
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2018-09-27 00:37:15 +02:00
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HOST_GRUB2_CONF_OPTS = \
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--disable-grub-mkfont \
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--enable-efiemu=no \
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ac_cv_lib_lzma_lzma_code=no \
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--enable-device-mapper=no \
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--enable-libzfs=no \
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--disable-werror
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2014-02-19 20:10:18 +01:00
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2015-07-29 13:52:14 +02:00
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ifeq ($(BR2_TARGET_GRUB2_I386_PC),y)
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define GRUB2_IMAGE_INSTALL_ELTORITO
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2017-07-05 13:14:21 +02:00
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cat $(HOST_DIR)/lib/grub/$(GRUB2_TUPLE)/cdboot.img $(GRUB2_IMAGE) > \
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2015-07-29 13:52:14 +02:00
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$(BINARIES_DIR)/grub-eltorito.img
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endef
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endif
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2018-09-27 00:37:15 +02:00
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define GRUB2_INSTALL_IMAGES_CMDS
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2014-02-19 20:10:18 +01:00
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mkdir -p $(dir $(GRUB2_IMAGE))
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2018-09-27 00:37:15 +02:00
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$(HOST_DIR)/usr/bin/grub-mkimage \
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-d $(@D)/grub-core/ \
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2014-02-19 20:10:18 +01:00
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-O $(GRUB2_TUPLE) \
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-o $(GRUB2_IMAGE) \
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2014-07-01 19:49:47 +02:00
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-p "$(GRUB2_PREFIX)" \
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2014-04-04 10:32:17 +02:00
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$(if $(GRUB2_BUILTIN_CONFIG),-c $(GRUB2_BUILTIN_CONFIG)) \
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2014-02-19 20:10:18 +01:00
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$(GRUB2_BUILTIN_MODULES)
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mkdir -p $(dir $(GRUB2_CFG))
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$(INSTALL) -D -m 0644 boot/grub2/grub.cfg $(GRUB2_CFG)
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2015-07-29 13:52:14 +02:00
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$(GRUB2_IMAGE_INSTALL_ELTORITO)
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2014-02-19 20:10:18 +01:00
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endef
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ifeq ($(GRUB2_PLATFORM),efi)
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define GRUB2_EFI_STARTUP_NSH
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echo $(notdir $(GRUB2_IMAGE)) > \
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$(BINARIES_DIR)/efi-part/startup.nsh
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endef
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2018-09-27 00:37:15 +02:00
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GRUB2_POST_INSTALL_IMAGES_HOOKS += GRUB2_EFI_STARTUP_NSH
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2014-02-19 20:10:18 +01:00
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endif
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$(eval $(autotools-package))
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2018-09-27 00:37:15 +02:00
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$(eval $(host-autotools-package))
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