Fixes: overflow in aspect ratio calculation Fixes: signed integer overflow: 393215 * 14594 cannot be represented in type 'int' Fixes: 15728/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_WMV3IMAGE_fuzzer-5661588893204480
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavcodec/vc1dec.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/libavcodec/vc1dec.c b/libavcodec/vc1dec.c index 9519864c55..2636ea701f 100644 --- a/libavcodec/vc1dec.c +++ b/libavcodec/vc1dec.c @@ -426,6 +426,11 @@ static av_cold int vc1_decode_init(AVCodecContext *avctx) GetBitContext gb; int ret; + if (avctx->width > 1 << 14 || avctx->height > 1 << 14) { + avpriv_request_sample(avctx, "Huge resolution"); + return AVERROR_PATCHWELCOME; + } + /* save the container output size for WMImage */ v->output_width = avctx->width; v->output_height = avctx->height; -- 2.22.1 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
