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-rw-r--r--libavformat/flvdec.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/libavformat/flvdec.c b/libavformat/flvdec.c
index 2d89bef..0217cef 100644
--- a/libavformat/flvdec.c
+++ b/libavformat/flvdec.c
@@ -1152,6 +1152,12 @@ retry_duration:
st->codecpar->codec_id == AV_CODEC_ID_MPEG4) {
int type = avio_r8(s->pb);
size--;
+
+ if (size < 0) {
+ ret = AVERROR_INVALIDDATA;
+ goto leave;
+ }
+
if (st->codecpar->codec_id == AV_CODEC_ID_H264 || st->codecpar->codec_id == AV_CODEC_ID_MPEG4) {
// sign extension
int32_t cts = (avio_rb24(s->pb) + 0xff800000) ^ 0xff800000;
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