diff options
| author | Anjali Kulkarni <anjali.k.kulkarni@oracle.com> | 2023-10-20 16:40:58 -0700 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2023-10-24 10:53:45 +0200 |
| commit | 9644bc49705723bf7c69aa9bf542bb5161b91dba (patch) | |
| tree | 1ecf816f481ab9266bfb4e3c065d5601c97932b5 | |
| parent | d788c9338342a3146d115281922901c1e3e1cbff (diff) | |
Fix NULL pointer dereference in cn_filter()
Check that sk_user_data is not NULL, else return from cn_filter().
Could not reproduce this issue, but Oliver Sang verified it has fixed
the "Closes" problem below.
Fixes: 2aa1f7a1f47c ("connector/cn_proc: Add filtering to fix some bugs")
Reported-by: kernel test robot <oliver.sang@intel.com>
Closes: https://lore.kernel.org/oe-lkp/202309201456.84c19e27-oliver.sang@intel.com/
Signed-off-by: Anjali Kulkarni <anjali.k.kulkarni@oracle.com>
Link: https://lore.kernel.org/r/20231020234058.2232347-1-anjali.k.kulkarni@oracle.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
| -rw-r--r-- | drivers/connector/cn_proc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/connector/cn_proc.c b/drivers/connector/cn_proc.c index 05d562e9c8b1..44b19e696176 100644 --- a/drivers/connector/cn_proc.c +++ b/drivers/connector/cn_proc.c @@ -54,7 +54,7 @@ static int cn_filter(struct sock *dsk, struct sk_buff *skb, void *data) enum proc_cn_mcast_op mc_op; uintptr_t val; - if (!dsk || !data) + if (!dsk || !dsk->sk_user_data || !data) return 0; ptr = (__u32 *)data; |