Re: [PATCH v3 bpf-next 0/6] Enable writing xattr from BPF programs
From: "Theodore Ts'o" <tytso@mit.edu>
Date: 2024-12-11 13:19:00
Also in:
bpf, linux-fsdevel, lkml
From: "Theodore Ts'o" <tytso@mit.edu>
Date: 2024-12-11 13:19:00
Also in:
bpf, linux-fsdevel, lkml
On Tue, Dec 10, 2024 at 02:06:21PM -0800, Song Liu wrote:
Add support to set and remove xattr from BPF program. Also add security.bpf. xattr name prefix.
If the system allows for the execution of unprivileged BPF programs
(e.g., ones where a random user can load their own BPF programs), will
they have hte ability to set and remove security.bpf.* xattrs? If the
answer is yes, should this be disallowed?
I note that one of the use cases seems to be BPF-based LSM's, so we
may want to have something even more restrictive since otherwise any
BPF program could potentially have the same power as the LSM?
- Ted