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| author | Eric Dumazet <edumazet@google.com> | 2017-03-04 05:01:03 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-03-22 11:43:33 (GMT) |
| commit | f157cc1d7251403c950d960e3bcf988c14d9deda (patch) | |
| tree | 42f7d5d8756c2490181c6179282b1c965a2a7473 /fs/ncpfs | |
| parent | 98fa3d2a8e399c40f681bca83f8ab522657c16db (diff) | |
| download | linux-f157cc1d7251403c950d960e3bcf988c14d9deda.tar.xz | |
net: fix socket refcounting in skb_complete_tx_timestamp()
[ Upstream commit 9ac25fc063751379cb77434fef9f3b088cd3e2f7 ]
TX skbs do not necessarily hold a reference on skb->sk->sk_refcnt
By the time TX completion happens, sk_refcnt might be already 0.
sock_hold()/sock_put() would then corrupt critical state, like
sk_wmem_alloc and lead to leaks or use after free.
Fixes: 62bccb8cdb69 ("net-timestamp: Make the clone operation stand-alone from phy timestamping")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Alexander Duyck <alexander.h.duyck@intel.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: Soheil Hassas Yeganeh <soheil@google.com>
Cc: Willem de Bruijn <willemb@google.com>
Acked-by: Soheil Hassas Yeganeh <soheil@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/ncpfs')
0 files changed, 0 insertions, 0 deletions