From 497e7473877243ff8ae02d8701aaf7854b9b57bf Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Mon, 1 Feb 2021 20:11:47 +0100 Subject: [PATCH] avcodec/cri: Stop the bitreader at the end of uncompressed input Fixes: Timeout Fixes: 29983/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_CRI_fuzzer-6420415838814208 Fixes: 30595/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_CRI_fuzzer-6559089360502784 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/cri.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/libavcodec/cri.c b/libavcodec/cri.c index efbccf4fee..3312606b75 100644 --- a/libavcodec/cri.c +++ b/libavcodec/cri.c @@ -335,6 +335,9 @@ skip: for (int y = 0; y < avctx->height; y++) { uint16_t *dst = (uint16_t *)(p->data[0] + y * p->linesize[0]); + if (get_bits_left(&gbit) < avctx->width * bps) + break; + for (int x = 0; x < avctx->width; x++) dst[x] = get_bits(&gbit, bps) << shift; }