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-rw-r--r--libavcodec/wmadec.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/libavcodec/wmadec.c b/libavcodec/wmadec.c
index d46eb33c41..8fc0cca807 100644
--- a/libavcodec/wmadec.c
+++ b/libavcodec/wmadec.c
@@ -512,6 +512,10 @@ static int wma_decode_block(WMACodecContext *s)
coef escape coding */
total_gain = 1;
for(;;) {
+ if (get_bits_left(&s->gb) < 7) {
+ av_log(s->avctx, AV_LOG_ERROR, "total_gain overread\n");
+ return AVERROR_INVALIDDATA;
+ }
a = get_bits(&s->gb, 7);
total_gain += a;
if (a != 127)