| Message ID | 1448921117-32766-1-git-send-email-kamal@canonical.com |
|---|---|
| State | New |
| Headers | show |
diff --git a/include/net/inet_common.h b/include/net/inet_common.h index fe7994c..fd1da04 100644 --- a/include/net/inet_common.h +++ b/include/net/inet_common.h @@ -40,7 +40,8 @@ int inet_ctl_sock_create(struct sock **sk, unsigned short family, static inline void inet_ctl_sock_destroy(struct sock *sk) { - sk_release_kernel(sk); + if (sk) + sk_release_kernel(sk); } #endif
This is a note to let you know that I have just added a patch titled net: avoid NULL deref in inet_ctl_sock_destroy() to the linux-3.13.y-queue branch of the 3.13.y-ckt extended stable tree which can be found at: http://kernel.ubuntu.com/git/ubuntu/linux.git/log/?h=linux-3.13.y-queue This patch is scheduled to be released in version 3.13.11-ckt31. If you, or anyone else, feels it should not be added to this tree, please reply to this email. For more information about the 3.13.y-ckt tree, see https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable Thanks. -Kamal ------ From 44be75666b5a5b595ef8d57a063f40a11824fe5a Mon Sep 17 00:00:00 2001 From: Eric Dumazet <edumazet@google.com> Date: Mon, 2 Nov 2015 07:50:07 -0800 Subject: 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: Kamal Mostafa <kamal@canonical.com> --- include/net/inet_common.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) -- 1.9.1