ffmpeg | branch: master | Michael Niedermayer <mich...@niedermayer.cc> | Sat May 4 00:15:33 2019 +0200| [09edcd35726c9ebea8a175b54dfe05483f7154f2] | committer: Michael Niedermayer
avcodec/jvdec: Use ff_get_buffer() when the content is not reused Fixes: Timeout (11sec -> 5sec) Fixes: 14473/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_JV_fuzzer-5761630857592832 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Reviewed-by: Peter Ross <pr...@xvid.org> Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=09edcd35726c9ebea8a175b54dfe05483f7154f2 --- libavcodec/jvdec.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/libavcodec/jvdec.c b/libavcodec/jvdec.c index 4337d5681e..b06e7cf2bf 100644 --- a/libavcodec/jvdec.c +++ b/libavcodec/jvdec.c @@ -163,13 +163,14 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, av_log(avctx, AV_LOG_ERROR, "video size %d invalid\n", video_size); return AVERROR_INVALIDDATA; } - if ((ret = ff_reget_buffer(avctx, s->frame)) < 0) - return ret; if (video_type == 0 || video_type == 1) { GetBitContext gb; init_get_bits(&gb, buf, 8 * video_size); + if ((ret = ff_reget_buffer(avctx, s->frame)) < 0) + return ret; + if (avctx->height/8 * (avctx->width/8) > 4 * video_size) { av_log(avctx, AV_LOG_ERROR, "Insufficient input data for dimensions\n"); return AVERROR_INVALIDDATA; @@ -184,6 +185,11 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, buf += video_size; } else if (video_type == 2) { int v = *buf++; + + av_frame_unref(s->frame); + if ((ret = ff_get_buffer(avctx, s->frame, AV_GET_BUFFER_FLAG_REF)) < 0) + return ret; + for (j = 0; j < avctx->height; j++) memset(s->frame->data[0] + j * s->frame->linesize[0], v, avctx->width); _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email ffmpeg-cvslog-requ...@ffmpeg.org with subject "unsubscribe".
