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-rw-r--r--libavcodec/alsdec.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/libavcodec/alsdec.c b/libavcodec/alsdec.c
index 63e58ff55a..a9b04b8569 100644
--- a/libavcodec/alsdec.c
+++ b/libavcodec/alsdec.c
@@ -663,6 +663,10 @@ static int read_var_block_data(ALSDecContext *ctx, ALSBlockData *bd)
int opt_order_length = av_ceil_log2(av_clip((bd->block_length >> 3) - 1,
2, sconf->max_order + 1));
*bd->opt_order = get_bits(gb, opt_order_length);
+ if (*bd->opt_order > sconf->max_order) {
+ av_log(avctx, AV_LOG_ERROR, "Order too large\n");
+ return -1;
+ }
} else {
*bd->opt_order = sconf->max_order;
}