diff options
Diffstat (limited to 'acpi-Ignore-acpi_rsdp-kernel-parameter-when-module-l.patch')
| -rw-r--r-- | acpi-Ignore-acpi_rsdp-kernel-parameter-when-module-l.patch | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/acpi-Ignore-acpi_rsdp-kernel-parameter-when-module-l.patch b/acpi-Ignore-acpi_rsdp-kernel-parameter-when-module-l.patch new file mode 100644 index 00000000..bedaf107 --- /dev/null +++ b/acpi-Ignore-acpi_rsdp-kernel-parameter-when-module-l.patch @@ -0,0 +1,39 @@ +From 0eca3e79748fdc9ac4491a85dc6c2d306077c749 Mon Sep 17 00:00:00 2001 +From: Josh Boyer <jwboyer@redhat.com> +Date: Mon, 25 Jun 2012 19:57:30 -0400 +Subject: [PATCH] acpi: Ignore acpi_rsdp kernel parameter when module loading + is restricted + +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 3abe9b223ba7..ee8f11cf65da 100644 +--- a/drivers/acpi/osl.c ++++ b/drivers/acpi/osl.c +@@ -44,6 +44,7 @@ + #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 + +-- +1.9.3 + |