From 659658d08bb2e7219001795c78efd24f381446e2 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Fri, 28 Aug 2020 00:17:41 +0200 Subject: [PATCH] avcodec/cfhd: Check transform type Fixes: out of array access Fixes: 24823/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_CFHD_fuzzer-4855119863349248 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/cfhd.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/libavcodec/cfhd.c b/libavcodec/cfhd.c index d014aa2bb7..ea35f03869 100644 --- a/libavcodec/cfhd.c +++ b/libavcodec/cfhd.c @@ -490,6 +490,10 @@ static int cfhd_decode(AVCodecContext *avctx, void *data, int *got_frame, av_log(avctx, AV_LOG_ERROR, "Invalid transform type\n"); ret = AVERROR(EINVAL); break; + } else if (data == 1) { + av_log(avctx, AV_LOG_ERROR, "unsupported transform type\n"); + ret = AVERROR_PATCHWELCOME; + break; } s->transform_type = data; av_log(avctx, AV_LOG_DEBUG, "Transform type %"PRIu16"\n", data);