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| author | Nicolas Dichtel <nicolas.dichtel@6wind.com> | 2018-03-14 23:10:23 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-04-08 12:49:42 +0300 |
| commit | b22ad56cce33e45dbfa19b41c4d7368a5bf34bde (patch) | |
| tree | eacabc4a2855b367a1cc9ced240eca3a3358c474 /net/netlink | |
| parent | a6ca1eddd279cb9bebf83f4473e347a540f3b442 (diff) | |
| download | linux-b22ad56cce33e45dbfa19b41c4d7368a5bf34bde.tar.xz | |
netlink: avoid a double skb free in genlmsg_mcast()
[ Upstream commit 02a2385f37a7c6594c9d89b64c4a1451276f08eb ]
nlmsg_multicast() consumes always the skb, thus the original skb must be
freed only when this function is called with a clone.
Fixes: cb9f7a9a5c96 ("netlink: ensure to loop over all netns in genlmsg_multicast_allns()")
Reported-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/netlink')
| -rw-r--r-- | net/netlink/genetlink.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/netlink/genetlink.c b/net/netlink/genetlink.c index f20774e4e0d5..bb263c1c1433 100644 --- a/net/netlink/genetlink.c +++ b/net/netlink/genetlink.c @@ -1083,7 +1083,7 @@ static int genlmsg_mcast(struct sk_buff *skb, u32 portid, unsigned long group, if (!err) delivered = true; else if (err != -ESRCH) - goto error; + return err; return delivered ? 0 : -ESRCH; error: kfree_skb(skb); |