diff options
| author | Eric Dumazet <edumazet@google.com> | 2015-11-02 07:50:07 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-12-09 14:03:12 -0500 |
| commit | 4db9971168297eca9f8ba93e1d25e8fbc26944ba (patch) | |
| tree | 29df94e5e3b15149a536ae2b29b522affef4818f /include | |
| parent | 20975f42a7933b489c0ef463e913c9742cfe2235 (diff) | |
net: avoid NULL deref in inet_ctl_sock_destroy()
[ Upstream commit 8fa677d2706d325d71dab91bf6e6512c05214e37 ]
Under low memory conditions, tcp_sk_init() and icmp_sk_init()
can both iterate on all possible cpus and call inet_ctl_sock_destroy(),
with eventual NULL pointer.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/net/inet_common.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/net/inet_common.h b/include/net/inet_common.h index 4a92423eefa5..82669da2540c 100644 --- a/include/net/inet_common.h +++ b/include/net/inet_common.h @@ -41,7 +41,8 @@ int inet_recv_error(struct sock *sk, struct msghdr *msg, int len, static inline void inet_ctl_sock_destroy(struct sock *sk) { - sk_release_kernel(sk); + if (sk) + sk_release_kernel(sk); } #endif |