ima: based on policy verify firmware signatures (pre-allocated buffer)

[ Upstream commit fd90bc559bfba743ae8de87ff23b92a5e4668062 ]

Don't differentiate, for now, between kernel_read_file_id READING_FIRMWARE
and READING_FIRMWARE_PREALLOC_BUFFER enumerations.

Fixes: a098ecd firmware: support loading into a pre-allocated buffer (since 4.8)
Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
Cc: Luis R. Rodriguez <mcgrof@suse.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Serge E. Hallyn <serge@hallyn.com>
Cc: Stephen Boyd <stephen.boyd@linaro.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/security/integrity/ima/ima_main.c b/security/integrity/ima/ima_main.c
index 7e334fd31c154380f83c88fb0b6bd9c73d50efcf..f8553179bdd78f670dfb911c07bb1df47c9c12da 100644 (file)
--- a/security/integrity/ima/ima_main.c
+++ b/security/integrity/ima/ima_main.c
@@ -379,6 +379,7 @@ int ima_read_file(struct file *file, enum kernel_read_file_id read_id)
 
 static int read_idmap[READING_MAX_ID] = {
        [READING_FIRMWARE] = FIRMWARE_CHECK,
+       [READING_FIRMWARE_PREALLOC_BUFFER] = FIRMWARE_CHECK,
        [READING_MODULE] = MODULE_CHECK,
        [READING_KEXEC_IMAGE] = KEXEC_KERNEL_CHECK,
        [READING_KEXEC_INITRAMFS] = KEXEC_INITRAMFS_CHECK,