added copyLen check (#868)

justdan96 · Apr 27, 2024 · 93c9070 · 93c9070
1 parent acdfe54
commit 93c9070
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/tsMuxer/programStreamDemuxer.cpp b/tsMuxer/programStreamDemuxer.cpp
@@ -288,6 +288,9 @@ int ProgramStreamDemuxer::simpleDemuxBlock(DemuxedData& demuxedData, const PIDSe
                 const uint8_t* payloadData = curBuf + pesPacket->getHeaderLength() + afterPesHeader;
                 const int pesPayloadLen = pesPacket->getPacketLength() - pesPacket->getHeaderLength() - afterPesHeader;
                 const int copyLen = FFMIN(pesPayloadLen, (int)(end - payloadData));
+                if (copyLen < 0) {
+                    THROW(ERR_COMMON, "Invalid copyLen")
+                }
                 vect.append(payloadData, copyLen);
                 m_dataProcessed += copyLen;
                 discardSize += payloadData - curBuf;