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Subject: media: mtk-vcodec: potential null pointer deference in SCP Author: Fullway Wang <fullwayw...@outlook.com> Date: Thu Jan 18 02:35:06 2024 +0000 The return value of devm_kzalloc() needs to be checked to avoid NULL pointer deference. This is similar to CVE-2022-3113. Link: https://lore.kernel.org/linux-media/ph7pr20mb5925094dae3fd750c7e39e01bf...@ph7pr20mb5925.namprd20.prod.outlook.com Signed-off-by: Fullway Wang <fullwayw...@outlook.com> Signed-off-by: Mauro Carvalho Chehab <mche...@kernel.org> drivers/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;
