WTF: patch "[PATCH] crypto: qat - add param check for DH" was seriously submitted to be applied to the 5.18-stable tree?

WTF: patch "[PATCH] crypto: qat - add param check for DH" was seriously submitted to be applied to the 5.18-stable tree?

[gregkh]

The patch below was submitted to be applied to the 5.18-stable tree.

I fail to see how this patch meets the stable kernel rules as found at
Documentation/process/stable-kernel-rules.rst.

I could be totally wrong, and if so, please respond to 
<stable@vger.kernel.org> and let me know why this patch should be
applied.  Otherwise, it is now dropped from my patch queues, never to be
seen again.

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From 2acbb8771f6ac82422886e63832ee7a0f4b1635b Mon Sep 17 00:00:00 2001
From: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Date: Mon, 9 May 2022 14:34:15 +0100
Subject: [PATCH] crypto: qat - add param check for DH

Reject requests with a source buffer that is bigger than the size of the
key. This is to prevent a possible integer underflow that might happen
when copying the source scatterlist into a linear buffer.

Cc: stable@vger.kernel.org
Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Reviewed-by: Adam Guerin <adam.guerin@intel.com>
Reviewed-by: Wojciech Ziemba <wojciech.ziemba@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/drivers/crypto/qat/qat_common/qat_asym_algs.c b/drivers/crypto/qat/qat_common/qat_asym_algs.c
index 947eeff181b4..7173a2a0a484 100644
--- a/drivers/crypto/qat/qat_common/qat_asym_algs.c
+++ b/drivers/crypto/qat/qat_common/qat_asym_algs.c
@@ -235,6 +235,10 @@ static int qat_dh_compute_value(struct kpp_request *req)
 		req->dst_len = ctx->p_size;
 		return -EOVERFLOW;
 	}
+
+	if (req->src_len > ctx->p_size)
+		return -EINVAL;
+
 	memset(msg, '\0', sizeof(*msg));
 	ICP_QAT_FW_PKE_HDR_VALID_FLAG_SET(msg->pke_hdr,
 					  ICP_QAT_FW_COMN_REQ_FLAG_SET);