On 08/04/2012 02:33 PM, Justin Ruggles wrote:
> chunk_size is unsigned 32-bit, but av_get_packet() takes a signed int as the
> packet size.
> ---
> libavformat/idcin.c | 4 ++++
> 1 files changed, 4 insertions(+), 0 deletions(-)
>
> diff --git a/libavformat/idcin.c b/libavformat/idcin.c
> index 74875cb..8cd86d1 100644
> --- a/libavformat/idcin.c
> +++ b/libavformat/idcin.c
> @@ -278,6 +278,10 @@ static int idcin_read_packet(AVFormatContext *s,
> }
>
> chunk_size = avio_rl32(pb);
> + if (chunk_size < 4 || chunk_size > INT_MAX - 4) {
> + av_log(s, AV_LOG_ERROR, "invalid chunk size: %u\n", chunk_size);
> + return AVERROR_INVALIDDATA;
> + }
> /* skip the number of decoded bytes (always equal to width * height)
> */
> avio_skip(pb, 4);
> chunk_size -= 4;
ping.
-Justin
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