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| author | Mimi Zohar <zohar@linux.ibm.com> | 2023-10-18 14:47:02 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-11-28 17:20:03 +0000 |
| commit | a311638793fa0b07ecbca079273288f7b143ab2a (patch) | |
| tree | fb183a9f9bd736065464f51da9a6ef6c42b1f8f5 /scripts/gdb/linux/vmalloc.py | |
| parent | 1eb840f104c0c1fda8c5f7e9485b87882b88b952 (diff) | |
ima: detect changes to the backing overlay file
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>
Diffstat (limited to 'scripts/gdb/linux/vmalloc.py')
0 files changed, 0 insertions, 0 deletions