From 63db6a02a78e6f1a3657d6287ea870ce10d54d9e Mon Sep 17 00:00:00 2001 From: James Almer Date: Thu, 17 Nov 2022 10:52:33 -0300 Subject: [PATCH] avformat/concatdec: check that there's extradata before trying to copy it The first argument for memcpy must not be NULL. Signed-off-by: James Almer --- libavformat/concatdec.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/libavformat/concatdec.c b/libavformat/concatdec.c index 7748c20b6d..5d4f67d0ac 100644 --- a/libavformat/concatdec.c +++ b/libavformat/concatdec.c @@ -181,8 +181,9 @@ static int copy_stream_props(AVStream *st, AVStream *source_st) if (ret < 0) return ret; } - memcpy(st->codecpar->extradata, source_st->codecpar->extradata, - source_st->codecpar->extradata_size); + if (source_st->codecpar->extradata_size) + memcpy(st->codecpar->extradata, source_st->codecpar->extradata, + source_st->codecpar->extradata_size); return 0; } if ((ret = avcodec_parameters_copy(st->codecpar, source_st->codecpar)) < 0)