[FFmpeg-devel] [PATCH 3/5] avformat/mxfdec: Check container_ul->desc before use

From: Michael Niedermayer <michael@niedermayer.cc>
To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Subject: [FFmpeg-devel] [PATCH 3/5] avformat/mxfdec: Check container_ul->desc before use
Date: Fri,  7 Jun 2024 02:32:13 +0200
Message-ID: <20240607003215.1723906-3-michael@niedermayer.cc> (raw)
In-Reply-To: <20240607003215.1723906-1-michael@niedermayer.cc>

Fixes: CID1592939 Dereference after null check

Sponsored-by: Sovereign Tech Fund
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
 libavformat/mxfdec.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libavformat/mxfdec.c b/libavformat/mxfdec.c
index e65cec74c23..820b03940aa 100644
--- a/libavformat/mxfdec.c
+++ b/libavformat/mxfdec.c
@@ -3031,6 +3031,7 @@ static int mxf_parse_structural_metadata(MXFContext *mxf)
             if (container_ul->desc)
                 av_dict_set(&st->metadata, "data_type", container_ul->desc, 0);
             if (mxf->eia608_extract &&
+                container_ul->desc &&
                 !strcmp(container_ul->desc, "vbi_vanc_smpte_436M")) {
                 st->codecpar->codec_type = AVMEDIA_TYPE_SUBTITLE;
                 st->codecpar->codec_id = AV_CODEC_ID_EIA_608;
-- 
2.45.2

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