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Date: Tue, 10 Nov 2009 04:51:39 GMT From: tip-bot for Borislav Petkov <borislav.petkov@....com> To: linux-tip-commits@...r.kernel.org Cc: linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...hat.com, andreas.herrmann3@....com, tglx@...utronix.de, mingo@...e.hu, borislav.petkov@....com Subject: [tip:x86/urgent] x86, amd-ucode: Check UCODE_MAGIC before loading the container file Commit-ID: 506f90eeae682dc96c11c7aefac0262b3a560b49 Gitweb: http://git.kernel.org/tip/506f90eeae682dc96c11c7aefac0262b3a560b49 Author: Borislav Petkov <borislav.petkov@....com> AuthorDate: Thu, 29 Oct 2009 14:45:52 +0100 Committer: Ingo Molnar <mingo@...e.hu> CommitDate: Tue, 10 Nov 2009 05:46:09 +0100 x86, amd-ucode: Check UCODE_MAGIC before loading the container file Signed-off-by: Borislav Petkov <borislav.petkov@....com> Signed-off-by: Andreas Herrmann <andreas.herrmann3@....com> LKML-Reference: <20091029134552.GC30802@...erich.amd.com> Signed-off-by: Ingo Molnar <mingo@...e.hu> --- 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); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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