[FFmpeg-devel] [PATCH v2 11/12] avutil/hwcontext: verify hw_frames_ctx in transfer_data_alloc

From: Zhao Zhili <quinkblack@foxmail.com>
To: ffmpeg-devel@ffmpeg.org
Cc: matthieu.bouron@stupeflix.com, Zhao Zhili <zhilizhao@tencent.com>,
	aman@tmm1.net
Subject: [FFmpeg-devel] [PATCH v2 11/12] avutil/hwcontext: verify hw_frames_ctx in transfer_data_alloc
Date: Sun, 20 Nov 2022 14:49:46 +0800
Message-ID: <tencent_D7059C768BAA6615508366F867DC6A86D306@qq.com> (raw)
In-Reply-To: <20221120064947.94540-1-quinkblack@foxmail.com>

From: Zhao Zhili <zhilizhao@tencent.com>

---
 libavutil/hwcontext.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/libavutil/hwcontext.c b/libavutil/hwcontext.c
index ab9ad3703e..3396598269 100644
--- a/libavutil/hwcontext.c
+++ b/libavutil/hwcontext.c
@@ -397,10 +397,14 @@ int av_hwframe_transfer_get_formats(AVBufferRef *hwframe_ref,
 
 static int transfer_data_alloc(AVFrame *dst, const AVFrame *src, int flags)
 {
-    AVHWFramesContext *ctx = (AVHWFramesContext*)src->hw_frames_ctx->data;
+    AVHWFramesContext *ctx;
     AVFrame *frame_tmp;
     int ret = 0;
 
+    if (!src->hw_frames_ctx)
+        return AVERROR(EINVAL);
+    ctx = (AVHWFramesContext*)src->hw_frames_ctx->data;
+
     frame_tmp = av_frame_alloc();
     if (!frame_tmp)
         return AVERROR(ENOMEM);
-- 
2.25.1

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