diff options
Diffstat (limited to 'libavcodec/dpcm.c')
| -rw-r--r-- | libavcodec/dpcm.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/libavcodec/dpcm.c b/libavcodec/dpcm.c index 0ce05c821a..c4a127d7c7 100644 --- a/libavcodec/dpcm.c +++ b/libavcodec/dpcm.c @@ -173,6 +173,10 @@ static int dpcm_decode_frame(AVCodecContext *avctx, if (!buf_size) return 0; + // almost every DPCM variant expands one byte of data into two + if(*data_size/2 < buf_size) + return -1; + switch(avctx->codec->id) { case CODEC_ID_ROQ_DPCM: @@ -256,6 +260,8 @@ static int dpcm_decode_frame(AVCodecContext *avctx, case CODEC_ID_SOL_DPCM: in = 0; if (avctx->codec_tag != 3) { + if(*data_size/4 < buf_size) + return -1; while (in < buf_size) { int n1, n2; n1 = (buf[in] >> 4) & 0xF; |