[20.10 backport] seccomp updates #43991
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This commit allows the Landlock[0] system calls in the default seccomp policy. Landlock was introduced in kernel 5.13, to fill the gap that inspecting filepaths passed as arguments to filesystem system calls is not really possible with pure `seccomp` (unless involving `ptrace`). Allowing Landlock by default fits in with allowing `seccomp` for containerized applications to voluntarily restrict their access rights to files within the container. [0]: https://www.kernel.org/doc/html/latest/userspace-api/landlock.html Signed-off-by: Tudor Brindus <me@tbrindus.ca> (cherry picked from commit af819bf) Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Kernel 5.12:
mount_setattr: needs CAP_SYS_ADMIN
Kernel 5.14:
quotactl_fd: needs CAP_SYS_ADMIN
memfd_secret: always allowed
Kernel 5.15:
process_mrelease: always allowed
Kernel 5.16:
futex_waitv: always allowed
Signed-off-by: Djordje Lukic <djordje.lukic@docker.com>
(cherry picked from commit 7de9f4f)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
AkihiroSuda
approved these changes
Aug 18, 2022
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backports;