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| author | Mickaël Salaün <mic@digikod.net> | 2024-05-16 21:19:34 +0300 |
|---|---|---|
| committer | Mickaël Salaün <mic@digikod.net> | 2024-05-31 17:41:52 +0300 |
| commit | 88da52ccd66e65f2e63a6c35c9dff55d448ef4dc (patch) | |
| tree | 4308738f019d2b37b3035db93ff5b77cf79b0a6a /drivers/zorro | |
| parent | 1613e604df0cd359cf2a7fbd9be7a0bcfacfabd0 (diff) | |
| download | linux-88da52ccd66e65f2e63a6c35c9dff55d448ef4dc.tar.xz | |
landlock: Fix d_parent walk
The WARN_ON_ONCE() in collect_domain_accesses() can be triggered when
trying to link a root mount point. This cannot work in practice because
this directory is mounted, but the VFS check is done after the call to
security_path_link().
Do not use source directory's d_parent when the source directory is the
mount point.
Cc: Günther Noack <gnoack@google.com>
Cc: Paul Moore <paul@paul-moore.com>
Cc: stable@vger.kernel.org
Reported-by: syzbot+bf4903dc7e12b18ebc87@syzkaller.appspotmail.com
Fixes: b91c3e4ea756 ("landlock: Add support for file reparenting with LANDLOCK_ACCESS_FS_REFER")
Closes: https://lore.kernel.org/r/000000000000553d3f0618198200@google.com
Link: https://lore.kernel.org/r/20240516181935.1645983-2-mic@digikod.net
[mic: Fix commit message]
Signed-off-by: Mickaël Salaün <mic@digikod.net>
Diffstat (limited to 'drivers/zorro')
0 files changed, 0 insertions, 0 deletions