From: Fullway Wang fullwaywang@outlook.com
[ Upstream commit 53dbe08504442dc7ba4865c09b3bbf5fe849681b ]
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/PH7PR20MB5925094DAE3FD750C7E39E01BF712@P... Signed-off-by: Fullway Wang fullwaywang@outlook.com Signed-off-by: Mauro Carvalho Chehab mchehab@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- .../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 9e744d07a1e8e..774487fb72a31 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;