Signed-off-by: Thomas Renninger <trenn@xxxxxxx> --- arch/x86/kernel/msr.c | 4 ++++ 1 files changed, 4 insertions(+), 0 deletions(-) diff --git a/arch/x86/kernel/msr.c b/arch/x86/kernel/msr.c index a7c5661..3de9128 100644 --- a/arch/x86/kernel/msr.c +++ b/arch/x86/kernel/msr.c @@ -37,6 +37,7 @@ #include <linux/notifier.h> #include <linux/uaccess.h> #include <linux/gfp.h> +#include <linux/capability.h> #include <asm/processor.h> #include <asm/msr.h> @@ -103,6 +104,9 @@ static ssize_t msr_write(struct file *file, const char __user *buf, int err = 0; ssize_t bytes = 0; + if (!capable(CAP_COMPROMISE_KERNEL)) + return -EPERM; + if (count % 8) return -EINVAL; /* Invalid chunk size */ -- 1.7.6.1 -- To unsubscribe from this list: send the line "unsubscribe linux-efi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
