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Commit 7802c68a authored by Dongwon Kang's avatar Dongwon Kang
Browse files

m4v_h263: add a test for invalid/negative value 

Test: run poc with and without the patch.
Bug: 134578122
Change-Id: I2d11826d1d9e2669aa5627065dc627729ddc823b
parent e3342733

media/libstagefright/codecs/m4v_h263/dec/src/packet_util.cpp

+5 −1
Original line number Diff line number Diff line
@@ -52,7 +52,11 @@ PV_STATUS PV_ReadVideoPacketHeader(VideoDecData *video, int *next_MB) 
        PV_BitstreamByteAlign(stream);

        BitstreamReadBits32(stream, resync_marker_length);



        *next_MB = (int) BitstreamReadBits16(stream, nbits);

        int mbnum = (int) BitstreamReadBits16(stream, nbits);

        if (mbnum < 0) {

            return PV_FAIL;

        }

        *next_MB = mbnum;

//      if (*next_MB <= video->mbnum)   /*  needs more investigation */

//          *next_MB = video->mbnum+1;