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jvdec: check videosize 

Fixes null ptr dereference
fixes Ticket1364

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit b4904e804d)

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-05-28 17:21:29 +02:00
parent cc0fec8393
commit 3e4eea6c32
1 changed files with 4 additions and 0 deletions
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4
libavcodec/jvdec.c
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@ -143,6 +143,10 @@ static int decode_frame(AVCodecContext *avctx,
buf += 5;
if (video_size) {
if(video_size < 0) {
av_log(avctx, AV_LOG_ERROR, "video size %d invalid\n", video_size);
return AVERROR_INVALIDDATA;
}
if (avctx->reget_buffer(avctx, &s->frame) < 0) {
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
return -1;