diff options
| author | Dust Li <dust.li@linux.alibaba.com> | 2019-04-01 16:04:53 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-04-01 10:11:41 -0700 |
| commit | b506bc975f60f06e13e74adb35e708a23dc4e87c (patch) | |
| tree | 90a10d72c1a9e02ce8e5de0d7f23ae114b8f6ea7 /usr | |
| parent | 7ff0b608984b9589b5374aaa26ffd1621d8601f5 (diff) | |
tcp: fix a potential NULL pointer dereference in tcp_sk_exit
When tcp_sk_init() failed in inet_ctl_sock_create(),
'net->ipv4.tcp_congestion_control' will be left
uninitialized, but tcp_sk_exit() hasn't check for
that.
This patch add checking on 'net->ipv4.tcp_congestion_control'
in tcp_sk_exit() to prevent NULL-ptr dereference.
Fixes: 6670e1524477 ("tcp: Namespace-ify sysctl_tcp_default_congestion_control")
Signed-off-by: Dust Li <dust.li@linux.alibaba.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'usr')
0 files changed, 0 insertions, 0 deletions