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Peter Jones d2cf823d0e efi: Fix some malformed device path arithmetic errors 
Several places we take the length of a device path and subtract 4 from
it, without ever checking that it's >= 4. There are also cases where
this kind of malformation will result in unpredictable iteration,
including treating the length from one dp node as the type in the next
node. These are all errors, no matter where the data comes from.

This patch adds a checking macro, GRUB_EFI_DEVICE_PATH_VALID(), which
can be used in several places, and makes GRUB_EFI_NEXT_DEVICE_PATH()
return NULL and GRUB_EFI_END_ENTIRE_DEVICE_PATH() evaluate as true when
the length is too small. Additionally, it makes several places in the
code check for and return errors in these cases.

Signed-off-by: Peter Jones <pjones@redhat.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
2020-07-29 16:55:48 +02:00
..
arc arc: Do not create spurious variable grub_arc_memory_type_t. 2017-08-30 15:18:24 +02:00
arm asm: Replace "__asm__ __volatile__" with "asm volatile" 2019-03-12 20:04:07 +01:00
arm64 asm: Replace "__asm__ __volatile__" with "asm volatile" 2019-03-12 20:04:07 +01:00
coreboot coreboot: Split parts that are platform-independent. 2017-05-08 19:10:24 +02:00
efi efi: Fix some malformed device path arithmetic errors 2020-07-29 16:55:48 +02:00
efiemu Fix packed-not-aligned error on GCC 8 2018-04-04 21:51:42 +02:00
emu calloc: Make sure we always have an overflow-checking calloc() available 2020-07-29 16:55:47 +02:00
gcry Import gcrypt public-key cryptography and implement signature checking. 2013-01-11 21:32:42 +01:00
gcrypt Remove autogenerated files from VCS 2013-01-12 16:17:31 +01:00
i386 x86/msr: Fix build with older GCC versions 2019-04-23 11:04:07 +02:00
ia64 ia64: Add support for R_IA64_GPREL64I. 2017-01-31 12:39:01 +01:00
ieee1275 ieee1275: obdisk driver 2019-03-12 20:04:07 +01:00
lib verifiers: Add possibility to verify kernel and modules command lines 2018-11-09 13:25:31 +01:00
mips multiboot fixup 2017-08-14 16:24:05 +02:00
net Add Virtual LAN support. 2017-05-03 13:03:50 +02:00
osdep grub-editenv: Add grub_util_readlink() 2020-02-18 15:14:13 +01:00
powerpc * grub-core/lib/powerpc/setjmp.S (grub_setjmp): Save r31. 2013-11-18 02:35:32 +01:00
riscv32 RISC-V: Add auxiliary files 2019-02-25 14:01:59 +01:00
riscv64 RISC-V: Add auxiliary files 2019-02-25 14:01:59 +01:00
sparc64 ieee1275: Include a.out header in assembly of sparc64 boot loader 2019-03-28 11:35:12 +01:00
uboot uboot: Add the missing disk write operation support 2019-01-22 15:23:51 +01:00
util grub-install: Check for arm-efi as a default target 2019-02-26 15:25:13 +01:00
x86_64 asm: Replace "__asm__ __volatile__" with "asm volatile" 2019-03-12 20:04:07 +01:00
xen xen: modify page table construction 2016-10-27 16:22:06 +02:00
zfs zfs: Fix gcc10 error -Werror=zero-length-bounds 2020-03-31 12:17:03 +02:00
acorn_filecore.h
acpi.h acpi: Fix gcc9 error -Waddress-of-packed-member 2019-04-23 11:37:08 +02:00
aout.h aout.h: Fix missing include. 2018-03-05 13:44:55 +01:00
archelp.h Support for cbfs. Also factor out the part which is common 2013-06-16 00:06:13 +02:00
at_keyboard.h at_keyboard: Fix falco chromebook case. 2017-05-09 14:27:52 +02:00
ata.h Remove nested functions from device iterators. 2013-01-20 15:52:15 +00:00
auth.h
autoefi.h Remove grub_efi_allocate_pages. 2017-08-07 18:33:29 +02:00
backtrace.h Several cleanups 2012-02-26 19:10:52 +01:00
bitmap.h Detach optional parts of gfxterm and integrate in with coreboot init. 2013-05-31 00:42:33 +02:00
bitmap_scale.h * grub-core/gfxmenu/theme_loader.c: New global options for the 2013-10-02 18:17:33 +04:00
boottime.h * include/grub/boottime.h: Add missing file. 2013-03-20 16:58:07 +01:00
bsdlabel.h Add gcc_struct to all packed structures when compiling with mingw. 2013-12-15 14:14:30 +01:00
btrfs.h Add gcc_struct to all packed structures when compiling with mingw. 2013-12-15 14:14:30 +01:00
bufio.h verifiers: File type for fine-grained signature-verification controlling 2018-11-09 13:25:31 +01:00
cache.h ia64: build fix in cache.h 2019-06-07 15:37:55 +02:00
cbfs_core.h Add gcc_struct to all packed structures when compiling with mingw. 2013-12-15 14:14:30 +01:00
charset.h * grub-core/commands/cat.c: Show UTF-8 characters. 2013-05-08 11:09:08 +02:00
cmos.h * include/grub/cmos.h: Handle high CMOS addresses on sparc64. 2013-03-02 23:59:05 +01:00
color.h Detach optional parts of gfxterm and integrate in with coreboot init. 2013-05-31 00:42:33 +02:00
command.h fix include loop on MinGW due to libintl.h pulling stdio.h 2014-01-18 21:22:57 +04:00
compiler-rt-emu.h RISC-V: Add __clzdi2 symbol 2019-09-23 13:17:15 +02:00
compiler-rt.h sparc: Enable __clzsi2() and __clzdi2() 2019-03-20 11:38:28 +01:00
compiler.h safemath: Add some arithmetic primitives that check for overflow 2020-07-29 16:55:47 +02:00
crypto.h fix Mingw W64-32 cross compile failure due to printf redefinition in libintl.h 2014-01-25 21:49:41 +04:00
cryptodisk.h luks: Move configuration of ciphers into cryptodisk 2020-01-10 14:29:37 +01:00
cs5536.h
datetime.h * include/grub/datetime.h (grub_datetime2unixtime): Fix unixtime 2013-03-10 19:19:21 +01:00
decompressor.h
deflate.h Implement Truecrypt ISO loader. 2013-12-17 14:45:46 +01:00
device.h Remove nested functions from device iterators. 2013-01-20 15:52:15 +00:00
disk.h Rename grub_disk members 2019-03-25 15:14:52 +01:00
diskfilter.h btrfs: Make more generic the code for RAID 6 rebuilding 2018-10-31 12:07:29 +01:00
dl.h RISC-V: Add awareness for RISC-V reloations 2019-02-25 11:34:09 +01:00
dma.h arm_coreboot: Support DMA. 2017-05-08 22:06:04 +02:00
elf.h elf.h: Add RISC-V definitions 2019-02-25 11:28:44 +01:00
elfload.h verifiers: File type for fine-grained signature-verification controlling 2018-11-09 13:25:31 +01:00
env.h * grub-core/kern/env.c, include/grub/env.h: Change iterator through 2013-03-03 01:34:27 +01:00
env_private.h
err.h Propagate GNU_PRINTF from gnulib vfprintf 2019-03-26 15:08:00 +01:00
exfat.h Add gcc_struct to all packed structures when compiling with mingw. 2013-12-15 14:14:30 +01:00
extcmd.h
fat.h chainloader: Fix wrong break condition (must be AND not, OR) 2018-02-23 22:32:55 +01:00
fbblit.h Move blit and fill dispatcher to appropriate files to decrease export 2013-05-30 22:06:28 +02:00
fbfill.h * grub-core/gfxmenu/gui_box.c: Updated to work with area status. 2013-11-08 15:42:38 +04:00
fbutil.h Detach optional parts of gfxterm and integrate in with coreboot init. 2013-05-31 00:42:33 +02:00
fdt.h linux, efi, arm*, fdt: Break FDT extra allocation space out into a #define 2019-01-23 10:16:32 +01:00
fdtbus.h fdtbus: Add ability to send/receive messages on parent busses. 2017-05-09 08:43:20 +02:00
file.h fdt: Treat device tree file type like ACPI 2019-02-25 14:02:06 +01:00
fileid.h Implement grub_file tool and use it to implement generating of config 2013-12-17 14:39:48 +01:00
font.h * grub-core/font/font.c, include/grub/font.h: Inline simple font 2013-05-30 21:58:24 +02:00
fontformat.h
fs.h Change fs functions to add fs_ prefix 2019-04-09 10:03:29 +10:00
fshelp.h fshelp: Add handling of "." and ".." and grub_fshelp_find_file_lookup. 2015-07-27 12:45:35 +02:00
gdb.h Adjust types in gdb module to have intended unsigned shifts rather than 2013-03-10 18:36:39 +01:00
gfxmenu_model.h
gfxmenu_view.h * grub-core/gfxmenu/theme_loader.c: New global options for the 2013-10-02 18:17:33 +04:00
gfxterm.h Detach optional parts of gfxterm and integrate in with coreboot init. 2013-05-31 00:42:33 +02:00
gfxwidgets.h
gpt_partition.h disk: Update grub_gpt_partentry 2018-04-23 13:21:45 +02:00
gui.h * include/grub/gui.h (grub_fixed_sfs_divide): Round rather than 2013-11-08 16:17:29 +01:00
gui_string_util.h
hfs.h hfs: Fix gcc9 error -Waddress-of-packed-member 2019-04-23 11:37:08 +02:00
hfsplus.h hfsplus: Fix potential access to uninited memory on invalid FS 2015-03-06 22:33:20 +01:00
i18n.h Add missing format_arg attribute to check that printf with translated 2013-12-17 16:42:01 +01:00
icon_manager.h
kernel.h xen: Prepare common code for Xen PVH support 2018-12-12 12:03:27 +01:00
keyboard_layouts.h Handle Japanese special keys. 2013-10-17 00:49:05 +02:00
legacy_parse.h * grub-core/tests/legacy_password_test.c: New test. 2013-11-12 02:38:33 +01:00
libpciaccess.h
linux.h Add ability to generate newc additions on runtime. 2013-03-22 21:01:28 +01:00
list.h verifiers: Framework core 2018-11-09 13:25:31 +01:00
loader.h Terminate UNDI and PXE before launching the payload to avoid problems 2012-04-11 22:32:31 +02:00
lvm.h Add gcc_struct to all packed structures when compiling with mingw. 2013-12-15 14:14:30 +01:00
macho.h * grub-core/loader/machoXX.c: Fix compilation on non-i386. 2013-12-17 22:44:46 +01:00
machoload.h verifiers: File type for fine-grained signature-verification controlling 2018-11-09 13:25:31 +01:00
memory.h Translate UEFI persistent memory type 2015-12-15 10:25:34 +03:00
menu.h Fix menu title instability bug. 2012-03-04 14:55:13 +01:00
menu_viewer.h
misc.h kern: Add grub_debug_enabled() 2020-03-10 21:40:06 +01:00
mm.h calloc: Make sure we always have an overflow-checking calloc() available 2020-07-29 16:55:47 +02:00
mm_private.h
module_verifier.h grub-module-verifier: Report the filename or modname in errors 2018-09-12 13:24:36 +02:00
msdos_partition.h Add gcc_struct to all packed structures when compiling with mingw. 2013-12-15 14:14:30 +01:00
multiboot.h multiboot: disentangle multiboot and multiboot2. 2017-08-14 14:08:54 +02:00
multiboot2.h Add a file missing in multiboot2 commit. 2017-09-05 23:13:55 +02:00
multiboot_loader.h
net.h normal/main: Search for specific config files for netboot 2020-02-18 15:12:06 +01:00
normal.h * grub-core/normal/main.c: Don't drop to rescue console in 2014-09-21 18:51:09 +02:00
ns8250.h
ntfs.h Add gcc_struct to all packed structures when compiling with mingw. 2013-12-15 14:14:30 +01:00
offsets.h xen: Add PVH specific defines to offset.h 2018-12-12 12:03:27 +01:00
parser.h * grub-core/disk/ldm.c: Rename variables and arguments to prevent 2013-10-18 16:54:57 +02:00
partition.h Remove nested functions from device iterators. 2013-01-20 15:52:15 +00:00
parttool.h Add missing const qualifiers. 2011-11-30 16:20:13 +01:00
pci.h arm_coreboot: Support DMA. 2017-05-08 22:06:04 +02:00
pciutils.h
priority_queue.h * tests/priority_queue_unit_test.cc: New test. 2013-05-07 11:30:48 +02:00
procfs.h fix include loop on MinGW due to libintl.h pulling stdio.h 2014-01-18 21:22:57 +04:00
ps2.h at_keyboard: Split protocol from controller code. 2017-05-08 21:41:22 +02:00
pubkey.h verifiers: fix double close on pgp's sig file descriptor 2018-11-21 14:46:53 +01:00
random.h Add RNG module. 2016-02-12 12:39:38 +01:00
reader.h Remove nested functions from script reading and parsing. 2013-01-15 12:03:25 +00:00
reed_solomon.h
relocator.h relocator: Protect grub_relocator_alloc_chunk_align() max_addr against integer underflow 2020-07-29 16:55:48 +02:00
relocator_private.h
safemath.h safemath: Add some arithmetic primitives that check for overflow 2020-07-29 16:55:47 +02:00
script_sh.h script: Avoid a use-after-free when redefining a function during execution 2020-07-29 16:55:48 +02:00
scsi.h Remove nested functions from device iterators. 2013-01-20 15:52:15 +00:00
scsicmd.h Add gcc_struct to all packed structures when compiling with mingw. 2013-12-15 14:14:30 +01:00
sdl.h
search.h
serial.h * grub-core/term/serial.c: Add option for enabling/disabling 2013-11-08 18:20:20 +01:00
setjmp.h * include/grub/setjmp.h: Define RETURNS_TWICE. Keep it empty for 2013-10-18 16:38:36 +02:00
smbios.h smbios: Add a module for retrieving SMBIOS information 2019-07-11 21:06:12 +02:00
smbus.h
speaker.h New terminal outputs using serial: morse and spkmodem. 2013-01-16 20:39:54 +01:00
symbol.h With Apple assembly in .macro environvemnt you have to use $$ instead 2013-11-24 07:08:18 +01:00
syslinux_parse.h Implement syslinux parser. 2013-12-18 05:28:05 +01:00
term.h kern/term: Accept ESC, F4 and holding SHIFT as user interrupt keys 2020-04-21 22:13:44 +02:00
terminfo.h Lift 255x255 erminal sie restriction to 65535x65535. Also change from 2013-10-19 23:59:32 +02:00
test.h * include/grub/test.h: Use gnu_printf rather than printf on GRUB 2013-12-15 14:39:21 +01:00
time.h Add a new "none" platform that only builds utilities 2014-09-23 12:06:30 +01:00
tparm.h Add missing const qualifiers. 2011-11-30 16:20:13 +01:00
tpm.h tpm: Rename function grub_tpm_log_event() to grub_tpm_measure() 2020-05-15 15:37:28 +02:00
trig.h * grub-core/gentrigtables.c: Make tables const. 2013-03-01 11:15:09 +01:00
types.h posix_wrap: Flesh out posix_wrap/limits.h a little more 2019-03-20 11:34:06 +01:00
udf.h Split out blocklist retrieving from setup.c to 2013-10-15 17:02:26 +02:00
unicode.h calloc: Use calloc() at most places 2020-07-29 16:55:47 +02:00
usb.h arm_coreboot: Support EHCI. 2017-05-08 22:15:05 +02:00
usbdesc.h Add gcc_struct to all packed structures when compiling with mingw. 2013-12-15 14:14:30 +01:00
usbserial.h Implement USBDebug (full USB stack variant). 2013-02-01 21:49:29 +01:00
usbtrans.h Add gcc_struct to all packed structures when compiling with mingw. 2013-12-15 14:14:30 +01:00
verify.h verifiers: Verify commands executed by grub 2018-12-12 13:17:52 +01:00
vga.h Add monochrome text support (mda_text, aka `hercules' in grub-legacy). 2012-06-28 15:27:54 +02:00
vgaregs.h Add monochrome text support (mda_text, aka `hercules' in grub-legacy). 2012-06-28 15:27:54 +02:00
video.h * include/grub/video.h (grub_video_rgba_color_rgb): Fix prototype 2013-12-21 14:31:47 +01:00
video_fb.h * grub-core/gfxmenu/gui_box.c: Updated to work with area status. 2013-11-08 15:42:38 +04:00
xen.h xen: Add basic hooks for PVH in current code 2018-12-12 12:03:27 +01:00
xen_file.h xen: add capability to load p2m list outside of kernel mapping 2016-10-27 16:22:06 +02:00
xnu.h Add gcc_struct to all packed structures when compiling with mingw. 2013-12-15 14:14:30 +01:00