linux/net/ipv4/tcp.c
Li RongQing f76c9a0fbf tcp: release sk_frag.page in tcp_disconnect
[ Upstream commit 9b42d55a66 ]

socket can be disconnected and gets transformed back to a listening
socket, if sk_frag.page is not released, which will be cloned into
a new socket by sk_clone_lock, but the reference count of this page
is increased, lead to a use after free or double free issue

Signed-off-by: Li RongQing <lirongqing@baidu.com>
Cc: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-02-12 07:07:19 +01:00

3656 lines
94 KiB