On Mon, 27 Aug 2018 at 19:20, Rostislav Pehlivanov <atomnu...@gmail.com>
wrote:
>
>
> On Sat, 25 Aug 2018 at 21:04, Paul B Mahol <one...@gmail.com> wrote:
>
>> Signed-off-by: Paul B Mahol <one...@gmail.com>
>> ---
>> configure | 1 +
>> libavcodec/Makefile | 1 +
>> libavcodec/allcodecs.c | 1 +
>> libavcodec/avcodec.h | 1 +
>> libavcodec/codec_desc.c | 7 ++
>> libavcodec/mwsc.c | 192 ++++++++++++++++++++++++++++++++++++++++
>> libavformat/riff.c | 1 +
>> 7 files changed, 204 insertions(+)
>> create mode 100644 libavcodec/mwsc.c
>>
>> +static int decode_frame(AVCodecContext *avctx,
>> + void *data, int *got_frame,
>> + AVPacket *avpkt)
>> +{
>> + MWSCContext *s = avctx->priv_data;
>> + AVFrame *frame = data;
>> + uint8_t *buf = avpkt->data;
>> + int buf_size = avpkt->size;
>> + GetByteContext gb;
>> + GetByteContext gbp;
>> + PutByteContext pb;
>> + int ret;
>>
>
> Can you check that avpkt->size isn't larger than the deflate buffer you've
> allocated?
>
If zlib checks that the buffer size is smaller than what it has to unpack
don't, same as the wincam decoder.
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