From 2ac2c94590d49e69ad8400a9df959533195143ed Mon Sep 17 00:00:00 2001 From: Marek Lindner Date: Thu, 24 Apr 2014 03:44:25 +0800 Subject: [PATCH 7/9] batman-adv: fix indirect hard_iface NULL dereference If hard_iface is NULL and goto out is made batadv_hardif_free_ref() doesn't check for NULL before dereferencing it to get to refcount. Introduced in f13f960797fd1969b3c0470cc97435ddfb6aecb4 ("batman-adv: add debugfs support to view multiif tables"). Reported-by: Sven Eckelmann Signed-off-by: Marek Lindner Acked-by: Antonio Quartulli --- originator.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/originator.c b/originator.c index aa2468b..35b42f8 100644 --- a/originator.c +++ b/originator.c @@ -1074,7 +1074,8 @@ int batadv_orig_hardif_seq_print_text(struct seq_file *seq, void *offset) bat_priv->bat_algo_ops->bat_orig_print(bat_priv, seq, hard_iface); out: - batadv_hardif_free_ref(hard_iface); + if (hard_iface) + batadv_hardif_free_ref(hard_iface); return 0; } -- 2.0.0.rc2