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| author |  Ard Biesheuvel <ardb@kernel.org>
| 2023-03-10 12:15:24 +0100 |
|---|---|---|
| committer | Ard Biesheuvel <ardb@kernel.org>
| 2023-03-10 14:11:39 +0100 |
| commit | c7d9e628b8ff4d52a365a441bdacb3209ee83c81 (patch) | |
| tree | 99549ee6401b3e1e68f1ba3fa06b155821cc75d5 /drivers/firmware | |
| parent | Linux 6.3-rc1 (diff) | |
| download | linux-c7d9e628b8ff4d52a365a441bdacb3209ee83c81.tar.gz linux-c7d9e628b8ff4d52a365a441bdacb3209ee83c81.tar.bz2 linux-c7d9e628b8ff4d52a365a441bdacb3209ee83c81.zip | |
efi/libstub: zboot: Mark zboot EFI application as NX compatible
Now that the zboot loader will invoke the EFI memory attributes protocol
to remap the decompressed code and rodata as read-only/executable, we
can set the PE/COFF header flag that indicates to the firmware that the
application does not rely on writable memory being executable at the
same time.
Cc: <stable@vger.kernel.org> # v6.2+
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Diffstat (limited to 'drivers/firmware')
| -rw-r--r-- | drivers/firmware/efi/libstub/zboot-header.S | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/firmware/efi/libstub/zboot-header.S b/drivers/firmware/efi/libstub/zboot-header.S index ec4525d40e0c..445cb646eaaa 100644 --- a/drivers/firmware/efi/libstub/zboot-header.S +++ b/drivers/firmware/efi/libstub/zboot-header.S @@ -63,7 +63,7 @@ __efistub_efi_zboot_header: .long .Lefi_header_end - .Ldoshdr .long 0 .short IMAGE_SUBSYSTEM_EFI_APPLICATION - .short 0 + .short IMAGE_DLL_CHARACTERISTICS_NX_COMPAT #ifdef CONFIG_64BIT .quad 0, 0, 0, 0 #else |