[FFmpeg-cvslog] avcodec/rv34: Add check for av_malloc

[Jiasheng Jiang]

ffmpeg | branch: master | Jiasheng Jiang <jiasheng at iscas.ac.cn> | Mon Apr 17 10:32:12 2023 +0800| [f8d0b13de5fe1a3d158dcc6f419c45c368b1dd4f] | committer: James Almer

avcodec/rv34: Add check for av_malloc

Add the check for the return value of the av_malloc in order to avoid
NULL pointer deference.

Fixes: b86ab38137 ("Add weighted motion compensation for RV40 B-frames")
Signed-off-by: Jiasheng Jiang <jiasheng at iscas.ac.cn>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=f8d0b13de5fe1a3d158dcc6f419c45c368b1dd4f
---

 libavcodec/rv34.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libavcodec/rv34.c b/libavcodec/rv34.c
index 45f64666f8..51f18147af 100644
--- a/libavcodec/rv34.c
+++ b/libavcodec/rv34.c
@@ -1692,6 +1692,8 @@ int ff_rv34_decode_frame(AVCodecContext *avctx, AVFrame *pict,
             int i;
 
             r->tmp_b_block_base = av_malloc(s->linesize * 48);
+            if (!r->tmp_b_block_base)
+                return AVERROR(ENOMEM);
             for (i = 0; i < 2; i++)
                 r->tmp_b_block_y[i] = r->tmp_b_block_base
                                       + i * 16 * s->linesize;