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scsi: ufs: rpmb: Validate request frame length before parsing

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The RPMB core only verifies that request and response buffers are
nonempty. This callback reads req_resp at the end of the first request
frame before validating the request length.  Require a complete frame
before that access.

Fixes: b06b8c4214 ("scsi: ufs: core: Add OP-TEE based RPMB driver for UFS devices")
Signed-off-by: Li Qiang <liqiang01@kylinos.cn>
Reviewed-by: Peter Wang <peter.wang@mediatek.com>
Reviewed-by: Bean Huo <beanhuo@micron.com>
Link: https://patch.msgid.link/20260717153914.26321-5-liqiang01@kylinos.cn
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Li Qiang 2026-07-17 23:39:11 +08:00 committed by Martin K. Petersen
parent 9e6dd452f1
commit a947b8edbd
1 changed files with 4 additions and 0 deletions
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4
drivers/ufs/core/ufs-rpmb.c
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@ -69,6 +69,10 @@ static int ufs_rpmb_route_frames(struct device *dev, u8 *req, unsigned int req_l
hba = ufs_rpmb->hba;
/* req_resp is at the end of an RPMB frame. */
if (req_len < sizeof(*frm_out))
return -EINVAL;
req_type = be16_to_cpu(frm_out->req_resp);
switch (req_type) {