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| author | Mahesh Bandewar <maheshb@google.com> | 2022-11-15 17:19:14 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-11-18 10:39:22 +0000 |
| commit | 40b9d1ab63f5c4f3cb69450044d07b45e5af72e1 (patch) | |
| tree | 773c981b4357becfd3258719c1138e268508839a /net | |
| parent | 8207f253a097fe15c93d85ac15ebb73c5e39e1e1 (diff) | |
| download | linux-40b9d1ab63f5c4f3cb69450044d07b45e5af72e1.tar.gz | |
ipvlan: hold lower dev to avoid possible use-after-free
Recently syzkaller discovered the issue of disappearing lower
device (NETDEV_UNREGISTER) while the virtual device (like
macvlan) is still having it as a lower device. So it's just
a matter of time similar discovery will be made for IPvlan
device setup. So fixing it preemptively. Also while at it,
add a refcount tracker.
Fixes: 2ad7bf363841 ("ipvlan: Initial check-in of the IPVLAN driver.")
Signed-off-by: Mahesh Bandewar <maheshb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
0 files changed, 0 insertions, 0 deletions