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-rw-r--r--drivers/media/firewire/firedtv-avc.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/media/firewire/firedtv-avc.c b/drivers/media/firewire/firedtv-avc.c
index d1a1a1324ef8..ac17567f0822 100644
--- a/drivers/media/firewire/firedtv-avc.c
+++ b/drivers/media/firewire/firedtv-avc.c
@@ -1157,6 +1157,10 @@ int avc_ca_pmt(struct firedtv *fdtv, char *msg, int length)
if (pmt_cmd_id != 1 && pmt_cmd_id != 4)
dev_err(fdtv->device,
"invalid pmt_cmd_id %d\n", pmt_cmd_id);
+ if (program_info_length > sizeof(c->operand) - write_pos) {
+ ret = -EINVAL;
+ goto out;
+ }
memcpy(&c->operand[write_pos], &msg[read_pos],
program_info_length);
@@ -1180,6 +1184,11 @@ int avc_ca_pmt(struct firedtv *fdtv, char *msg, int length)
dev_err(fdtv->device, "invalid pmt_cmd_id %d "
"at stream level\n", pmt_cmd_id);
+ if (es_info_length > sizeof(c->operand) - write_pos) {
+ ret = -EINVAL;
+ goto out;
+ }
+
memcpy(&c->operand[write_pos], &msg[read_pos],
es_info_length);
read_pos += es_info_length;

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