vima: check packet size before initializing bitstream reader

Signed-off-by: Paul B Mahol <onemda@gmail.com>
13 years ago · 857797bc14
parent 06f5edc9be
commit 857797bc14
1 changed files with 2 additions and 2 deletions
--- a/libavcodec/vima.c
+++ b/libavcodec/vima.c
@ -141,11 +141,11 @@ static int decode_frame(AVCodecContext *avctx, void *data,
    int8_t         channel_hint[2];
    int            ret, chan, channels = 1;

-    init_get_bits(&gb, pkt->data, pkt->size * 8);
-
    if (pkt->size < 13)
        return AVERROR_INVALIDDATA;

+    init_get_bits(&gb, pkt->data, pkt->size * 8);
+
    samples = get_bits_long(&gb, 32);
    if (samples == 0xffffffff) {
        skip_bits_long(&gb, 32);