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Diffstat (limited to 'drivers/media/dvb-core/dvb_ca_en50221.c')
-rw-r--r--drivers/media/dvb-core/dvb_ca_en50221.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/media/dvb-core/dvb_ca_en50221.c b/drivers/media/dvb-core/dvb_ca_en50221.c
index d48b61eb01f4..a3b2754e7124 100644
--- a/drivers/media/dvb-core/dvb_ca_en50221.c
+++ b/drivers/media/dvb-core/dvb_ca_en50221.c
@@ -1473,6 +1473,9 @@ static ssize_t dvb_ca_en50221_io_write(struct file *file,
return -EFAULT;
buf += 2;
count -= 2;
+
+ if (slot >= ca->slot_count)
+ return -EINVAL;
sl = &ca->slot_info[slot];
/* check if the slot is actually running */

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