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(parent: 30e948a) | patch
tcp: release sk_frag.page in tcp_disconnect
authorLi RongQing <lirongqing@baidu.com>
Fri, 26 Jan 2018 08:40:41 +0000 (16:40 +0800)
committerDavid S. Miller <davem@davemloft.net>
Mon, 29 Jan 2018 22:56:23 +0000 (17:56 -0500)
commit9b42d55a66d388e4dd5550107df051a9637564fc
tree685bd712d0a69e853828cb0c0331577c3c7e5df0tree | snapshot
parent30e948a37839c633d18f6c4cf8a212912ba9449ccommit | diff
tcp: release sk_frag.page in tcp_disconnect

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>
net/ipv4/tcp.c diff | blob | history
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