904f9c1465
[ Upstream commit b836c4d29f2744200b2af41e14bf50758dddc818 ]
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: Sasha Levin <sashal@kernel.org>
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| .. | ||
| evm | ||
| ima | ||
| digsig.c | ||
| digsig_asymmetric.c | ||
| iint.c | ||
| integrity.h | ||
| integrity_audit.c | ||
| Kconfig | ||
| Makefile | ||