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Commit 506f90ee authored by Borislav Petkov's avatar Borislav Petkov Committed by Ingo Molnar
Browse files

x86, amd-ucode: Check UCODE_MAGIC before loading the container file 



Signed-off-by: default avatarBorislav Petkov <borislav.petkov@amd.com>
Signed-off-by: default avatarAndreas Herrmann <andreas.herrmann3@amd.com>
LKML-Reference: <20091029134552.GC30802@alberich.amd.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent de2a47cf

arch/x86/kernel/microcode_amd.c

+6 −0
Original line number Diff line number Diff line
@@ -317,6 +317,12 @@ static enum ucode_state request_microcode_fw(int cpu, struct device *device) 
		return UCODE_NFOUND;

	}



	if (*(u32 *)firmware->data != UCODE_MAGIC) {

		printk(KERN_ERR "microcode: invalid UCODE_MAGIC (0x%08x)\n",

		       *(u32 *)firmware->data);

		return UCODE_ERROR;

	}



	ret = generic_load_microcode(cpu, firmware->data, firmware->size);



	release_firmware(firmware);