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Date: Wed, 8 Feb 2017 11:55:43 +0000
From: Ard Biesheuvel <ard.biesheuvel@...aro.org>
To: linux-efi@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org,
mark.rutland@....com,
leif.lindholm@...aro.org
Cc: catalin.marinas@....com,
linux@...linux.org.uk,
kernel-hardening@...ts.openwall.com,
labbott@...oraproject.org,
Ard Biesheuvel <ard.biesheuvel@...aro.org>
Subject: [PATCH v2 10/14] arm: efi: remove forbidden values from the PE/COFF header
Bring the PE/COFF header in line with the PE/COFF spec, by setting
NumberOfSymbols to 0, and removing the section alignment flags.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@...aro.org>
---
arch/arm/boot/compressed/efi-header.S | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/arch/arm/boot/compressed/efi-header.S b/arch/arm/boot/compressed/efi-header.S
index 1d26a9d0a9e8..50eff3bbc57c 100644
--- a/arch/arm/boot/compressed/efi-header.S
+++ b/arch/arm/boot/compressed/efi-header.S
@@ -43,7 +43,7 @@ coff_header:
.short 2 @ nr_sections
.long 0 @ TimeDateStamp
.long 0 @ PointerToSymbolTable
- .long 1 @ NumberOfSymbols
+ .long 0 @ NumberOfSymbols
.short section_table - optional_header
@ SizeOfOptionalHeader
.short 0x306 @ Characteristics.
@@ -109,7 +109,7 @@ section_table:
.long 0 @ PointerToLineNumbers
.short 0 @ NumberOfRelocations
.short 0 @ NumberOfLineNumbers
- .long 0x42100040 @ Characteristics
+ .long 0x42000040 @ Characteristics
.ascii ".text\0\0\0"
.long _end - __efi_start @ VirtualSize
@@ -120,7 +120,7 @@ section_table:
.long 0 @ PointerToLineNumbers
.short 0 @ NumberOfRelocations
.short 0 @ NumberOfLineNumbers
- .long 0xe0500020 @ Characteristics
+ .long 0xe0000020 @ Characteristics
.align 9
__efi_start:
--
2.7.4
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