From 93810a625cb7d0dc174576951519ce72321c9f66 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Fri, 18 Nov 2022 20:54:12 +0100 Subject: [PATCH] avcodec/mobiclip: Check input size before (re)allocation Fixes: Timeout Fixes: 52566/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MOBICLIP_fuzzer-4913160050311168 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/mobiclip.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/libavcodec/mobiclip.c b/libavcodec/mobiclip.c index aca462428c..c3b2383dbc 100644 --- a/libavcodec/mobiclip.c +++ b/libavcodec/mobiclip.c @@ -1216,6 +1216,9 @@ static int mobiclip_decode(AVCodecContext *avctx, AVFrame *rframe, AVFrame *frame = s->pic[s->current_pic]; int ret; + if (avctx->height/16 * (avctx->width/16) * 2 > 8LL*FFALIGN(pkt->size, 2)) + return AVERROR_INVALIDDATA; + av_fast_padded_malloc(&s->bitstream, &s->bitstream_size, pkt->size);