diff options
| author | Xiaoming Ni <nixiaoming@huawei.com> | 2021-03-25 11:51:10 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-04-16 12:00:20 +0200 |
| commit | a1cdd18c49d23ec38097ac2c5b0d761146fc0109 (patch) | |
| tree | 8c81b12ed792bc4271d0bc07bfa54056057e702a /net/tipc/socket.c | |
| parent | 5f59ece38eacbe79ea846d7c81b197859f3b622e (diff) | |
nfc: fix refcount leak in llcp_sock_bind()
commit c33b1cc62ac05c1dbb1cdafe2eb66da01c76ca8d upstream.
nfc_llcp_local_get() is invoked in llcp_sock_bind(),
but nfc_llcp_local_put() is not invoked in subsequent failure branches.
As a result, refcount leakage occurs.
To fix it, add calling nfc_llcp_local_put().
fix CVE-2020-25670
Fixes: c7aa12252f51 ("NFC: Take a reference on the LLCP local pointer when creating a socket")
Reported-by: "kiyin(尹亮)" <kiyin@tencent.com>
Link: https://www.openwall.com/lists/oss-security/2020/11/01/1
Cc: <stable@vger.kernel.org> #v3.6
Signed-off-by: Xiaoming Ni <nixiaoming@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/tipc/socket.c')
0 files changed, 0 insertions, 0 deletions