Fixes: shift exponent 32 is too large for 32-bit type 'unsigned int' Fixes: 65909/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_VMIX_fuzzer-519459745831321
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavcodec/vmixdec.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/libavcodec/vmixdec.c b/libavcodec/vmixdec.c index d6b6e3557f..ab283d13db 100644 --- a/libavcodec/vmixdec.c +++ b/libavcodec/vmixdec.c @@ -235,6 +235,9 @@ static int decode_frame(AVCodecContext *avctx, else if (offset != 3) return AVERROR_INVALIDDATA; + if (s->lshift > 31) + return AVERROR_INVALIDDATA; + q = quality[FFMIN(avpkt->data[offset - 2], FF_ARRAY_ELEMS(quality)-1)]; for (int n = 0; n < 64; n++) s->factors[n] = quant[n] * q; -- 2.17.1 _______________________________________________ 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".
