Matthew Garrett 7d31f4602f kexec_load: Disable at runtime if the kernel is locked down ... The kexec_load() syscall permits the loading and execution of arbitrary code in ring 0, which is something that lock-down is meant to prevent. It makes sense to disable kexec_load() in this situation. This does not affect kexec_file_load() syscall which can check for a signature on the image to be booted. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Matthew Garrett <mjg59@google.com> Acked-by: Dave Young <dyoung@redhat.com> Reviewed-by: Kees Cook <keescook@chromium.org> cc: kexec@lists.infradead.org Signed-off-by: James Morris <jmorris@namei.org>		2019-08-19 21:54:15 -07:00
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Kconfig	lockdown: Enforce module signatures if the kernel is locked down	2019-08-19 21:54:15 -07:00
lockdown.c	kexec_load: Disable at runtime if the kernel is locked down	2019-08-19 21:54:15 -07:00
Makefile