Javier Martinez Canillas 359efcc2c9 efi/efi_test: Lock down /dev/efi_test and require CAP_SYS_ADMIN ... The driver exposes EFI runtime services to user-space through an IOCTL interface, calling the EFI services function pointers directly without using the efivar API. Disallow access to the /dev/efi_test character device when the kernel is locked down to prevent arbitrary user-space to call EFI runtime services. Also require CAP_SYS_ADMIN to open the chardev to prevent unprivileged users to call the EFI runtime services, instead of just relying on the chardev file mode bits for this. The main user of this driver is the fwts [0] tool that already checks if the effective user ID is 0 and fails otherwise. So this change shouldn't cause any regression to this tool. [0]: https://wiki.ubuntu.com/FirmwareTestSuite/Reference/uefivarinfo Signed-off-by: Javier Martinez Canillas <javierm@redhat.com> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Acked-by: Laszlo Ersek <lersek@redhat.com> Acked-by: Matthew Garrett <mjg59@google.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-efi@vger.kernel.org Link: https://lkml.kernel.org/r/20191029173755.27149-7-ardb@kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>		2019-10-31 09:40:21 +01:00
..
arm_scmi
broadcom	firmware: bcm47xx_nvram: _really_ correct size_t printf format	2019-09-22 11:31:15 -07:00
efi	efi/efi_test: Lock down /dev/efi_test and require CAP_SYS_ADMIN	2019-10-31 09:40:21 +01:00
google	firmware: google: increment VPD key_len properly	2019-10-11 08:41:34 +02:00
imx
meson
psci
tegra
xilinx
arm_scpi.c
arm_sdei.c
dmi_scan.c	firmware: dmi: Fix unlikely out-of-bounds read in save_mem_devices	2019-10-14 21:41:24 +02:00
dmi-id.c
dmi-sysfs.c
edd.c
iscsi_ibft_find.c
iscsi_ibft.c
Kconfig
Makefile
memmap.c
pcdp.c
pcdp.h
qcom_scm-32.c
qcom_scm-64.c
qcom_scm.c
qcom_scm.h
qemu_fw_cfg.c
raspberrypi.c
scpi_pm_domain.c
stratix10-rsu.c
stratix10-svc.c
ti_sci.c
ti_sci.h
trusted_foundations.c
turris-mox-rwtm.c