Messages in this thread Patch in this message | | | From | Anjali Kulkarni <> | Subject | [PATCH v1] Fix NULL pointer dereference in cn_filter() | Date | Fri, 13 Oct 2023 15:56:19 -0700 |
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Check that sk_user_data is not NULL, else return from cn_filter().
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> --- drivers/connector/cn_proc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/connector/cn_proc.c b/drivers/connector/cn_proc.c index 05d562e9c8b1..a8e55569e4f5 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 || !data || !dsk->sk_user_data) return 0; ptr = (__u32 *)data; -- 2.42.0
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