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Accepting request 901053 from home:gary_lin:branches:devel:openSUSE:Factory

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- Add shim-disable-export-vendor-dbx.patch to disable exporting
  vendor-dbx to MokListXRT since writing a large RT variable
  could crash some machines (bsc#1185261)
- Add shim-bsc1187260-fix-efi-1.10-machines.patch to avoid the
  potential crash when calling QueryVariableInfo in EFI 1.10
  machines (bsc#1187260)

- Add shim-fix-aa64-relsz.patch to fix the size of rela sections
  for AArch64
  Fix: https://github.com/rhboot/shim/issues/371

OBS-URL: https://build.opensuse.org/request/show/901053
OBS-URL: https://build.opensuse.org/package/show/devel:openSUSE:Factory/shim?expand=0&rev=184
This commit is contained in:
Gary Ching-Pang Lin 2021-06-21 02:58:46 +00:00 committed by Git OBS Bridge
parent b128f342b9
commit 32f6f1f55a
5 changed files with 256 additions and 0 deletions
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62
shim-bsc1187260-fix-efi-1.10-machines.patch Normal file
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@ -0,0 +1,62 @@
From 493bd940e5c6e28e673034687de7adef9529efff Mon Sep 17 00:00:00 2001
From: Peter Jones <pjones@redhat.com>
Date: Sat, 10 Apr 2021 16:05:23 -0400
Subject: [PATCH] Don't call QueryVariableInfo() on EFI 1.10 machines
The EFI 1.10 spec (and presumably earlier revisions as well) didn't have
RT->QueryVariableInfo(), and on Chris Murphy's MacBookPro8,2 , that
memory appears to be initialized randomly.
This patch changes it to not call RT->QueryVariableInfo() if the
EFI_RUNTIME_SERVICES table's major revision is less than two, and
assumes our maximum variable size is 1024 in that case.
Signed-off-by: Peter Jones <pjones@redhat.com>
---
mok.c | 23 ++++++++++++++++++-----
1 file changed, 18 insertions(+), 5 deletions(-)
diff --git a/mok.c b/mok.c
index 9b8fc2bc..beac0ff6 100644
--- a/mok.c
+++ b/mok.c
@@ -261,6 +261,9 @@ static const uint8_t null_sha256[32] = { 0, };
typedef UINTN SIZE_T;
+#define EFI_MAJOR_VERSION(tablep) ((UINT16)((((tablep)->Hdr.Revision) >> 16) & 0xfffful))
+#define EFI_MINOR_VERSION(tablep) ((UINT16)(((tablep)->Hdr.Revision) & 0xfffful))
+
static EFI_STATUS
get_max_var_sz(UINT32 attrs, SIZE_T *max_var_szp)
{
@@ -270,11 +273,21 @@ get_max_var_sz(UINT32 attrs, SIZE_T *max_var_szp)
uint64_t max_var_sz = 0;
*max_var_szp = 0;
- efi_status = gRT->QueryVariableInfo(attrs, &max_storage_sz,
- &remaining_sz, &max_var_sz);
- if (EFI_ERROR(efi_status)) {
- perror(L"Could not get variable storage info: %r\n", efi_status);
- return efi_status;
+ if (EFI_MAJOR_VERSION(gRT) < 2) {
+ dprint(L"EFI %d.%d; no RT->QueryVariableInfo(). Using 1024!\n",
+ EFI_MAJOR_VERSION(gRT), EFI_MINOR_VERSION(gRT));
+ max_var_sz = remaining_sz = max_storage_sz = 1024;
+ efi_status = EFI_SUCCESS;
+ } else {
+ dprint(L"calling RT->QueryVariableInfo() at 0x%lx\n",
+ gRT->QueryVariableInfo);
+ efi_status = gRT->QueryVariableInfo(attrs, &max_storage_sz,
+ &remaining_sz, &max_var_sz);
+ if (EFI_ERROR(efi_status)) {
+ perror(L"Could not get variable storage info: %r\n",
+ efi_status);
+ return efi_status;
+ }
}
/*
--
2.31.1

36
shim-disable-export-vendor-dbx.patch Normal file
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@ -0,0 +1,36 @@
From 41da21f1f9d4af213f9f235a864772b99ce85fc7 Mon Sep 17 00:00:00 2001
From: Gary Lin <glin@suse.com>
Date: Fri, 18 Jun 2021 17:54:46 +0800
Subject: [PATCH] Disable exporting vendor-dbx to MokListXRT
As the vendor-dbx grows, it caused some problems when writing such
a large variable. Some firmwares lie the avaiable space(*1) , and
some even crash(*2) for no good reason after the writing of
MokListXRT. Both shim and kernel don't rely on MokListXRT to block
anything, so we just stop exporting vendor-dbx to MokListXRT to
avoid the potential hassles.
(*1) https://bugzilla.suse.com/show_bug.cgi?id=1185261
(*2) https://github.com/rhboot/shim/pull/369#issuecomment-855275115
Signed-off-by: Gary Lin <glin@suse.com>
---
mok.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/mok.c b/mok.c
index beac0ff6..a687a92b 100644
--- a/mok.c
+++ b/mok.c
@@ -194,8 +194,6 @@ struct mok_state_variable mok_state_variables[] = {
EFI_VARIABLE_NON_VOLATILE,
.no_attr = EFI_VARIABLE_RUNTIME_ACCESS,
.categorize_addend = categorize_deauthorized,
- .addend = &vendor_deauthorized,
- .addend_size = &vendor_deauthorized_size,
.flags = MOK_MIRROR_KEYDB |
MOK_MIRROR_DELETE_FIRST |
MOK_VARIABLE_LOG,
--
2.31.1

132
shim-fix-aa64-relsz.patch Normal file
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@ -0,0 +1,132 @@
From 9828f65f3e9de29da7bc70cb71069cc1d7ca1b4a Mon Sep 17 00:00:00 2001
From: Gary Lin <glin@suse.com>
Date: Wed, 16 Jun 2021 16:13:32 +0800
Subject: [PATCH] arm/aa64: fix the size of .rela* sections
The previous commit(*) merged .rel* and .dyn* into .rodata, and this
made ld to generate the wrong size for .rela* sections that covered
other unrelated sections. When the EFI image was loaded, _relocate()
went through the unexpected data and may cause unexpected crash.
This commit moves .rel* and .dyn* out of .rodata in the ld script but
also moves the related variables, such as _evrodata, _rodata_size,
and _rodata_vsize, to the end of the new .dyn section, so that the
crafted pe-coff section header for .rodata still covers our new
.rela and .dyn sections.
(*) 212ba30544f ("arm/aa64 targets: put .rel* and .dyn* in .rodata")
Fix issue: https://github.com/rhboot/shim/issues/371
Signed-off-by: Gary Lin <glin@suse.com>
---
Makefile | 4 ++--
elf_aarch64_efi.lds | 24 ++++++++++++++++--------
elf_arm_efi.lds | 24 ++++++++++++++++--------
3 files changed, 34 insertions(+), 18 deletions(-)
Index: shim-15.4/Makefile
===================================================================
--- shim-15.4.orig/Makefile
+++ shim-15.4/Makefile
@@ -243,7 +243,7 @@ ifneq ($(OBJCOPY_GTE224),1)
endif
$(OBJCOPY) -D -j .text -j .sdata -j .data -j .data.ident \
-j .dynamic -j .rodata -j .rel* \
- -j .rela* -j .reloc -j .eh_frame \
+ -j .rela* -j .dyn -j .reloc -j .eh_frame \
-j .vendor_cert -j .sbat \
$(FORMAT) $< $@
# I am tired of wasting my time fighting binutils timestamp code.
@@ -260,7 +260,7 @@ ifneq ($(OBJCOPY_GTE224),1)
endif
$(OBJCOPY) -D -j .text -j .sdata -j .data \
-j .dynamic -j .rodata -j .rel* \
- -j .rela* -j .reloc -j .eh_frame -j .sbat \
+ -j .rela* -j .dyn -j .reloc -j .eh_frame -j .sbat \
-j .debug_info -j .debug_abbrev -j .debug_aranges \
-j .debug_line -j .debug_str -j .debug_ranges \
-j .note.gnu.build-id \
Index: shim-15.4/elf_aarch64_efi.lds
===================================================================
--- shim-15.4.orig/elf_aarch64_efi.lds
+++ shim-15.4/elf_aarch64_efi.lds
@@ -70,21 +70,29 @@ SECTIONS
.rodata :
{
_rodata = .;
- *(.rela.dyn)
- *(.rela.plt)
- *(.rela.got)
- *(.rela.data)
- *(.rela.data*)
-
*(.rodata*)
*(.srodata)
- *(.dynsym)
- *(.dynstr)
. = ALIGN(16);
*(.note.gnu.build-id)
. = ALIGN(4096);
*(.vendor_cert)
*(.data.ident)
+ . = ALIGN(4096);
+ }
+ . = ALIGN(4096);
+ .rela :
+ {
+ *(.rela.dyn)
+ *(.rela.plt)
+ *(.rela.got)
+ *(.rela.data)
+ *(.rela.data*)
+ }
+ . = ALIGN(4096);
+ .dyn :
+ {
+ *(.dynsym)
+ *(.dynstr)
_evrodata = .;
. = ALIGN(4096);
}
Index: shim-15.4/elf_arm_efi.lds
===================================================================
--- shim-15.4.orig/elf_arm_efi.lds
+++ shim-15.4/elf_arm_efi.lds
@@ -70,21 +70,29 @@ SECTIONS
.rodata :
{
_rodata = .;
- *(.rel.dyn)
- *(.rel.plt)
- *(.rel.got)
- *(.rel.data)
- *(.rel.data*)
-
*(.rodata*)
*(.srodata)
- *(.dynsym)
- *(.dynstr)
. = ALIGN(16);
*(.note.gnu.build-id)
. = ALIGN(4096);
*(.vendor_cert)
*(.data.ident)
+ . = ALIGN(4096);
+ }
+ . = ALIGN(4096);
+ .rela :
+ {
+ *(.rela.dyn)
+ *(.rela.plt)
+ *(.rela.got)
+ *(.rela.data)
+ *(.rela.data*)
+ }
+ . = ALIGN(4096);
+ .dyn :
+ {
+ *(.dynsym)
+ *(.dynstr)
_evrodata = .;
. = ALIGN(4096);
}

17
shim.changes
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@ -1,3 +1,20 @@
-------------------------------------------------------------------
Mon Jun 21 01:58:00 UTC 2021 - Gary Ching-Pang Lin <glin@suse.com>
- Add shim-disable-export-vendor-dbx.patch to disable exporting
vendor-dbx to MokListXRT since writing a large RT variable
could crash some machines (bsc#1185261)
- Add shim-bsc1187260-fix-efi-1.10-machines.patch to avoid the
potential crash when calling QueryVariableInfo in EFI 1.10
machines (bsc#1187260)
-------------------------------------------------------------------
Thu Jun 17 03:03:37 UTC 2021 - Gary Ching-Pang Lin <glin@suse.com>
- Add shim-fix-aa64-relsz.patch to fix the size of rela sections
for AArch64
Fix: https://github.com/rhboot/shim/issues/371
-------------------------------------------------------------------
Fri Jun 4 09:22:51 UTC 2021 - Gary Ching-Pang Lin <glin@suse.com>

9
shim.spec
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@ -85,6 +85,12 @@ Patch8: shim-bsc1185621-relax-max-var-sz-check.patch
Patch9: shim-bsc1185261-relax-import_mok_state-check.patch
# PATCH-FIX-UPSTREAM shim-bsc1185232-relax-loadoptions-length-check.patch bsc#1185232 glin@suse.com -- Relax the check for the LoadOptions length
Patch10: shim-bsc1185232-relax-loadoptions-length-check.patch
# PATCH-FIX-UPSTREAM shim-fix-aa64-relsz.patch glin@suse.com -- Fix the size of rela* sections for AArch64
Patch11: shim-fix-aa64-relsz.patch
# PATCH-FIX-SUSE shim-disable-export-vendor-dbx.patch bsc#1185261 glin@suse.com -- Disable exporting vendor-dbx to MokListXRT
Patch12: shim-disable-export-vendor-dbx.patch
# PATCH-FIX-UPSTREAM shim-bsc1187260-fix-efi-1.10-machines.patch bsc#1187260 glin@suse.com -- Don't call QueryVariableInfo() on EFI 1.10 machines
Patch13: shim-bsc1187260-fix-efi-1.10-machines.patch
BuildRequires: dos2unix
BuildRequires: mozilla-nss-tools
BuildRequires: openssl >= 0.9.8
@ -133,6 +139,9 @@ The source code of UEFI shim loader
%patch8 -p1
%patch9 -p1
%patch10 -p1
%patch11 -p1
%patch12 -p1
%patch13 -p1
%build
# generate the vendor SBAT metadata