* [PATCH] media: mtk-vcodec: potential null pointer deference in SCP
@ 2024-01-18 2:35 Fullway Wang
0 siblings, 0 replies; only message in thread
From: Fullway Wang @ 2024-01-18 2:35 UTC (permalink / raw)
To: tiffany.lin, andrew-ct.chen, yunfei.dong
Cc: fullwaywang, linux-media, linux-kernel, Fullway Wang
The return value of devm_kzalloc() needs to be checked to avoid
NULL pointer deference. This is similar to CVE-2022-3113.
Signed-off-by: Fullway Wang <fullwaywang@outlook.com>
---
.../media/platform/mediatek/vcodec/common/mtk_vcodec_fw_scp.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/media/platform/mediatek/vcodec/common/mtk_vcodec_fw_scp.c b/drivers/media/platform/mediatek/vcodec/common/mtk_vcodec_fw_scp.c
index 6bbe55de6ce9..ff23b225db70 100644
--- a/drivers/media/platform/mediatek/vcodec/common/mtk_vcodec_fw_scp.c
+++ b/drivers/media/platform/mediatek/vcodec/common/mtk_vcodec_fw_scp.c
@@ -79,6 +79,8 @@ struct mtk_vcodec_fw *mtk_vcodec_fw_scp_init(void *priv, enum mtk_vcodec_fw_use
}
fw = devm_kzalloc(&plat_dev->dev, sizeof(*fw), GFP_KERNEL);
+ if (!fw)
+ return ERR_PTR(-ENOMEM);
fw->type = SCP;
fw->ops = &mtk_vcodec_rproc_msg;
fw->scp = scp;
--
2.39.3 (Apple Git-145)
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