143f450c6c
commit b836c4d29f2744200b2af41e14bf50758dddc818 upstream.
Commit 18b44bc5a672 ("ovl: Always reevaluate the file signature for
IMA") forced signature re-evaulation on every file access.
Instead of always re-evaluating the file's integrity, detect a change
to the backing file, by comparing the cached file metadata with the
backing file's metadata. Verifying just the i_version has not changed
is insufficient. In addition save and compare the i_ino and s_dev
as well.
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Tested-by: Eric Snowberg <eric.snowberg@oracle.com>
Tested-by: Raul E Rangel <rrangel@chromium.org>
Cc: stable@vger.kernel.org
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
||
|---|---|---|
| .. | ||
| ima.h | ||
| ima_api.c | ||
| ima_appraise.c | ||
| ima_asymmetric_keys.c | ||
| ima_crypto.c | ||
| ima_efi.c | ||
| ima_fs.c | ||
| ima_init.c | ||
| ima_kexec.c | ||
| ima_main.c | ||
| ima_modsig.c | ||
| ima_mok.c | ||
| ima_policy.c | ||
| ima_queue.c | ||
| ima_queue_keys.c | ||
| ima_template.c | ||
| ima_template_lib.c | ||
| ima_template_lib.h | ||
| Kconfig | ||
| Makefile | ||