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author | Xiyu Yang <xiyuyang19@fudan.edu.cn> | 2020-04-15 11:36:19 +0300 |
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committer | David S. Miller <davem@davemloft.net> | 2020-04-18 23:09:46 +0300 |
commit | d03f228470a8c0a22b774d1f8d47071e0de4f6dd (patch) | |
tree | 2b62e9da1a2a8e3346cfd2712abab732dfa4089c /net/tipc/crypto.c | |
parent | 2fcd80144b93ff90836a44f2054b4d82133d3a85 (diff) | |
download | linux-d03f228470a8c0a22b774d1f8d47071e0de4f6dd.tar.xz |
net: netrom: Fix potential nr_neigh refcnt leak in nr_add_node
nr_add_node() invokes nr_neigh_get_dev(), which returns a local
reference of the nr_neigh object to "nr_neigh" with increased refcnt.
When nr_add_node() returns, "nr_neigh" becomes invalid, so the refcount
should be decreased to keep refcount balanced.
The issue happens in one normal path of nr_add_node(), which forgets to
decrease the refcnt increased by nr_neigh_get_dev() and causes a refcnt
leak. It should decrease the refcnt before the function returns like
other normal paths do.
Fix this issue by calling nr_neigh_put() before the nr_add_node()
returns.
Signed-off-by: Xiyu Yang <xiyuyang19@fudan.edu.cn>
Signed-off-by: Xin Tan <tanxin.ctf@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/tipc/crypto.c')
0 files changed, 0 insertions, 0 deletions