Hi Linus,
This change fixes a mis-handling of the LANDLOCK_ACCESS_FS_REFER right
when multiple rulesets/domains are stacked. The expected behaviour was
that an additional ruleset can only restrict the set of permitted
operations, but in this particular case, it was potentially possible to
re-gain the LANDLOCK_ACCESS_FS_REFER right.
Please pull this Landlock fix for v6.0-rc4 . These changes merged
cleanly with your tree, and have been successfully tested in the latest
linux-next releases for a week. This should be backported to v5.19 .
Regards,
Mickaël
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The following changes since commit 3d7cb6b04c3f3115719235cc6866b10326de34cd:
Linux 5.19 (2022-07-31 14:03:01 -0700)
are available in the Git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/mic/linux.git tags/landlock-6.0-rc4
for you to fetch changes up to 55e55920bbe3ccf516022c51f5527e7d026b8f1d:
landlock: Fix file reparenting without explicit LANDLOCK_ACCESS_FS_REFER (2022-09-02 15:29:08 +0200)
----------------------------------------------------------------
Landlock fix for v6.0-rc4
----------------------------------------------------------------
Mickaël Salaün (1):
landlock: Fix file reparenting without explicit LANDLOCK_ACCESS_FS_REFER
security/landlock/fs.c | 48 ++++-----
tools/testing/selftests/landlock/fs_test.c | 155 +++++++++++++++++++++++++++--
2 files changed, 170 insertions(+), 33 deletions(-)
The pull request you sent on Fri, 2 Sep 2022 16:04:00 +0200:
> git://git.kernel.org/pub/scm/linux/kernel/git/mic/linux.git tags/landlock-6.0-rc4
has been merged into torvalds/linux.git:
https://git.kernel.org/torvalds/c/0c95f02269a1ef6c3fae4f46bbdd7a4578d44b8f
Thank you!
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