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mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-22 20:23:57 +08:00
linux-next/drivers/firmware/efi
Laszlo Ersek 630ba0cc7a efi: Fix out-of-bounds read in variable_matches()
The variable_matches() function can currently read "var_name[len]", for
example when:

 - var_name[0] == 'a',
 - len == 1
 - match_name points to the NUL-terminated string "ab".

This function is supposed to accept "var_name" inputs that are not
NUL-terminated (hence the "len" parameter"). Document the function, and
access "var_name[*match]" only if "*match" is smaller than "len".

Reported-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Cc: Peter Jones <pjones@redhat.com>
Cc: Matthew Garrett <mjg59@coreos.com>
Cc: Jason Andryuk <jandryuk@gmail.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: <stable@vger.kernel.org> # v3.10+
Link: http://thread.gmane.org/gmane.comp.freedesktop.xorg.drivers.intel/86906
Signed-off-by: Matt Fleming <matt@codeblueprint.co.uk>
2016-04-22 19:41:41 +01:00
..
libstub kernel: add kcov code coverage 2016-03-22 15:36:02 -07:00
arm-init.c efi/arm64: Don't apply MEMBLOCK_NOMAP to UEFI memory map mapping 2016-03-31 21:33:50 +01:00
arm-runtime.c arm64/efi: refactor EFI init and runtime code for reuse by 32-bit ARM 2015-12-09 16:57:23 +00:00
cper.c efi: Handle memory error structures produced based on old versions of standard 2015-07-15 13:30:38 +01:00
efi-pstore.c Half dozen small cleanups plus change to allow pstore 2015-11-05 11:51:18 -08:00
efi.c efi: Add Persistent Memory type name 2016-02-03 11:41:20 +01:00
efivars.c drivers/firmware/efi/efivars.c: use in_compat_syscall() to check for compat callers 2016-03-22 15:36:02 -07:00
esrt.c efi/esrt: Don't preformat name 2015-12-14 15:24:03 +00:00
fake_mem.c efi: Fix warning of int-to-pointer-cast on x86 32-bit builds 2015-10-28 12:28:06 +01:00
Kconfig * Make the EFI System Resource Table (ESRT) driver explicitly 2015-10-14 16:51:34 +02:00
Makefile ARM: wire up UEFI init and runtime support 2015-12-13 19:18:30 +01:00
reboot.c x86/reboot: Add EFI reboot quirk for ACPI Hardware Reduced flag 2014-07-18 21:23:52 +01:00
runtime-map.c efi: Fix error handling in add_sysfs_runtime_map_entry() 2015-05-05 16:20:13 +01:00
runtime-wrappers.c efi/runtime-wrappers: Run UEFI Runtime Services with interrupts enabled 2016-02-22 08:26:25 +01:00
vars.c efi: Fix out-of-bounds read in variable_matches() 2016-04-22 19:41:41 +01:00