Messages in this thread Patch in this message | | | Date | Thu, 29 Oct 2009 14:45:52 +0100 | From | Andreas Herrmann <> | Subject | [PATCH 1/2] x86, amd-ucode: Check UCODE_MAGIC before loading the container file |
| |
From 5183dd763c6dc9f760e29f3313e0ae3dda5228a2 Mon Sep 17 00:00:00 2001 From: Borislav Petkov <borislav.petkov@amd.com> Date: Thu, 29 Oct 2009 14:00:54 +0100 Subject: [PATCH 1/2] x86, amd-ucode: Check UCODE_MAGIC before loading the container file
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com> Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com> --- arch/x86/kernel/microcode_amd.c | 6 ++++++ 1 files changed, 6 insertions(+), 0 deletions(-)
diff --git a/arch/x86/kernel/microcode_amd.c b/arch/x86/kernel/microcode_amd.c index 366baa1..f4c538b 100644 --- a/arch/x86/kernel/microcode_amd.c +++ b/arch/x86/kernel/microcode_amd.c @@ -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); -- 1.6.5.1
| |