From 350bedf7e2892a1201fdfac8260040d8ec4d4c6c Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Mon, 31 May 2021 21:40:17 +0200 Subject: [PATCH] avcodec/vc2enc: Check for non negative slice bounds Fixes: invalid shifts Fixes: Ticket 8221 Signed-off-by: Michael Niedermayer (cherry picked from commit f7862e82686b347eb6a9e64fa7ccdf25d5a76b4b) Signed-off-by: Michael Niedermayer --- libavcodec/vc2enc.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/libavcodec/vc2enc.c b/libavcodec/vc2enc.c index 7bd2e4c2ab..295cc21dfa 100644 --- a/libavcodec/vc2enc.c +++ b/libavcodec/vc2enc.c @@ -982,6 +982,8 @@ static av_cold int vc2_encode_frame(AVCodecContext *avctx, AVPacket *avpkt, } s->slice_min_bytes = s->slice_max_bytes - s->slice_max_bytes*(s->tolerance/100.0f); + if (s->slice_min_bytes < 0) + return AVERROR(EINVAL); ret = encode_frame(s, avpkt, frame, aux_data, header_size, s->interlaced); if (ret)