File ffmpeg-CVE-2018-15822.patch of Package ffmpeg.27460
diff --git a/libavformat/flvenc.c b/libavformat/flvenc.c
index 899b07e..e966c36 100644
--- a/libavformat/flvenc.c
+++ b/libavformat/flvenc.c
@@ -879,6 +879,11 @@ static int flv_write_packet(AVFormatContext *s, AVPacket *pkt)
int flags = -1, flags_size, ret;
int64_t cur_offset = avio_tell(pb);
+ if (par->codec_type == AVMEDIA_TYPE_AUDIO && !pkt->size) {
+ av_log(s, AV_LOG_WARNING, "Empty audio Packet\n");
+ return AVERROR(EINVAL);
+ }
+
if (par->codec_id == AV_CODEC_ID_VP6F || par->codec_id == AV_CODEC_ID_VP6A ||
par->codec_id == AV_CODEC_ID_VP6 || par->codec_id == AV_CODEC_ID_AAC)
flags_size = 2;