Messages in this thread Patch in this message | | | From | Matthew Garrett <> | Subject | [PATCH V3 07/11] acpi: Ignore acpi_rsdp kernel parameter when module loading is restricted | Date | Tue, 3 Sep 2013 19:50:14 -0400 |
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From: Josh Boyer <jwboyer@redhat.com>
This option allows userspace to pass the RSDP address to the kernel, which makes it possible for a user to circumvent any restrictions imposed on loading modules. Disable it in that case.
Signed-off-by: Josh Boyer <jwboyer@redhat.com> --- drivers/acpi/osl.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c index 6ab2c35..e4c4410 100644 --- a/drivers/acpi/osl.c +++ b/drivers/acpi/osl.c @@ -45,6 +45,7 @@ #include <linux/list.h> #include <linux/jiffies.h> #include <linux/semaphore.h> +#include <linux/module.h> #include <asm/io.h> #include <asm/uaccess.h> @@ -245,7 +246,7 @@ early_param("acpi_rsdp", setup_acpi_rsdp); acpi_physical_address __init acpi_os_get_root_pointer(void) { #ifdef CONFIG_KEXEC - if (acpi_rsdp) + if (acpi_rsdp && !secure_modules()) return acpi_rsdp; #endif -- 1.8.3.1
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