| From | Greg Kroah-Hartman <> | Subject | [PATCH 3.13 068/172] batman-adv: fix potential orig_node reference leak | Date | Tue, 4 Mar 2014 12:02:32 -0800 |
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3.13-stable review patch. If anyone has any objections, please let me know.
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From: Simon Wunderlich <sw@simonwunderlich.de>
[ Upstream commit b2262df7fcf2c395eca564df83238e931d88d7bf ]
Since batadv_orig_node_new() sets the refcount to two, assuming that the calling function will use a reference for putting the orig_node into a hash or similar, both references must be freed if initialization of the orig_node fails. Otherwise that object may be leaked in that error case.
Reported-by: Antonio Quartulli <antonio@meshcoding.com> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Antonio Quartulli <antonio@meshcoding.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- net/batman-adv/bat_iv_ogm.c | 2 ++ 1 file changed, 2 insertions(+)
--- a/net/batman-adv/bat_iv_ogm.c +++ b/net/batman-adv/bat_iv_ogm.c @@ -256,6 +256,8 @@ batadv_iv_ogm_orig_get(struct batadv_pri free_bcast_own: kfree(orig_node->bat_iv.bcast_own); free_orig_node: + /* free twice, as batadv_orig_node_new sets refcount to 2 */ + batadv_orig_node_free_ref(orig_node); batadv_orig_node_free_ref(orig_node); return NULL;
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