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-rw-r--r--libavcodec/amrnbdec.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/libavcodec/amrnbdec.c b/libavcodec/amrnbdec.c
index 926014f83c..fff0e7248a 100644
--- a/libavcodec/amrnbdec.c
+++ b/libavcodec/amrnbdec.c
@@ -977,6 +977,10 @@ static int amrnb_decode_frame(AVCodecContext *avctx, void *data,
pitch_sharpening(p, subframe, p->cur_frame_mode, &fixed_sparse);
+ if (fixed_sparse.pitch_lag == 0) {
+ av_log(avctx, AV_LOG_ERROR, "The file is corrupted, pitch_lag = 0 is not allowed\n");
+ return AVERROR_INVALIDDATA;
+ }
ff_set_fixed_vector(p->fixed_vector, &fixed_sparse, 1.0,
AMR_SUBFRAME_SIZE);