diff options
Diffstat (limited to 'drivers/media/rc/ir-lirc-codec.c')
| -rw-r--r-- | drivers/media/rc/ir-lirc-codec.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/media/rc/ir-lirc-codec.c b/drivers/media/rc/ir-lirc-codec.c index aec0109b1a697..1ed69c9e64bf1 100644 --- a/drivers/media/rc/ir-lirc-codec.c +++ b/drivers/media/rc/ir-lirc-codec.c @@ -126,6 +126,16 @@ static ssize_t ir_lirc_transmit_ir(struct file *file, const char __user *buf, if (scan.flags || scan.keycode || scan.timestamp) return -EINVAL; + /* + * The scancode field in lirc_scancode is 64-bit simply + * to future-proof it, since there are IR protocols encode + * use more than 32 bits. For now only 32-bit protocols + * are supported. + */ + if (scan.scancode > U32_MAX || + !rc_validate_scancode(scan.rc_proto, scan.scancode)) + return -EINVAL; + raw = kmalloc_array(LIRCBUF_SIZE, sizeof(*raw), GFP_KERNEL); if (!raw) return -ENOMEM; |