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Patch "crypto: talitos - fix IPsec cipher in length" has been added to the 4.15-stable tree

PATCH [email protected] 1 participant 1 message Apr 5, 2018

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This is a note to let you know that I've just added the patch titled

crypto: talitos - fix IPsec cipher in length

to the 4.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
crypto-talitos-fix-ipsec-cipher-in-length.patch
and it can be found in the queue-4.15 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

Quoted 1 line

From 2b1227301a8e4729409694e323b72c064c47cb6b Mon Sep 17 00:00:00 2001

From: LEROY Christophe <[email protected]>
Date: Thu, 22 Mar 2018 10:57:01 +0100
Subject: crypto: talitos - fix IPsec cipher in length
MIME-Version: 1.0
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From: LEROY Christophe <[email protected]>

commit 2b1227301a8e4729409694e323b72c064c47cb6b upstream.

For SEC 2.x+, cipher in length must contain only the ciphertext length. In case of using hardware ICV checking, the ICV length is provided via the "extent" field of the descriptor pointer.

Cc <[email protected]> # 4.8+
Fixes 549bd8bc5987 ("crypto: talitos - Implement AEAD for SEC1 using HMAC_SNOOP_NO_AFEU")
Reported-by Horia Geantă <[email protected]>
Signed-off-by Christophe Leroy <[email protected]>
Tested-by Horia Geantă <[email protected]>
Signed-off-by Herbert Xu <[email protected]>
Signed-off-by Greg Kroah-Hartman <[email protected]>
---
 drivers/crypto/talitos.c |   36 ++++++++++++++++++++----------------
 1 file changed, 20 insertions(+), 16 deletions(-)
drivers/crypto/talitos.c +20 -16
@@ -1128,10 +1128,10 @@ next:
 	return count;
 }
 
-static int talitos_sg_map(struct device *dev, struct scatterlist *src,
-		   unsigned int len, struct talitos_edesc *edesc,
-		   struct talitos_ptr *ptr,
-		   int sg_count, unsigned int offset, int tbl_off)
+static int talitos_sg_map_ext(struct device *dev, struct scatterlist *src,
+			      unsigned int len, struct talitos_edesc *edesc,
+			      struct talitos_ptr *ptr, int sg_count,
+			      unsigned int offset, int tbl_off, int elen)
 {
 	struct talitos_private *priv = dev_get_drvdata(dev);
 	bool is_sec1 = has_ftr_sec1(priv);

@@ -1140,6 +1140,7 @@ static int talitos_sg_map(struct device
 		to_talitos_ptr(ptr, 0, 0, is_sec1);
 		return 1;
 	}
+	to_talitos_ptr_ext_set(ptr, elen, is_sec1);
 	if (sg_count == 1) {
 		to_talitos_ptr(ptr, sg_dma_address(src) + offset, len, is_sec1);
 		return sg_count;

@@ -1148,7 +1149,7 @@ static int talitos_sg_map(struct device
 		to_talitos_ptr(ptr, edesc->dma_link_tbl + offset, len, is_sec1);
 		return sg_count;
 	}
-	sg_count = sg_to_link_tbl_offset(src, sg_count, offset, len,
+	sg_count = sg_to_link_tbl_offset(src, sg_count, offset, len + elen,
 					 &edesc->link_tbl[tbl_off]);
 	if (sg_count == 1) {
 		/* Only one segment now, so no link tbl needed*/

@@ -1162,6 +1163,15 @@ static int talitos_sg_map(struct device
 	return sg_count;
 }
 
+static int talitos_sg_map(struct device *dev, struct scatterlist *src,
+			  unsigned int len, struct talitos_edesc *edesc,
+			  struct talitos_ptr *ptr, int sg_count,
+			  unsigned int offset, int tbl_off)
+{
+	return talitos_sg_map_ext(dev, src, len, edesc, ptr, sg_count, offset,
+				  tbl_off, 0);
+}
+
 /*
  * fill in and submit ipsec_esp descriptor
  */

@@ -1179,7 +1189,7 @@ static int ipsec_esp(struct talitos_edes
 	unsigned int ivsize = crypto_aead_ivsize(aead);
 	int tbl_off = 0;
 	int sg_count, ret;
-	int sg_link_tbl_len;
+	int elen = 0;
 	bool sync_needed = false;
 	struct talitos_private *priv = dev_get_drvdata(dev);
 	bool is_sec1 = has_ftr_sec1(priv);

@@ -1221,17 +1231,11 @@ static int ipsec_esp(struct talitos_edes
 	 * extent is bytes of HMAC postpended to ciphertext,
 	 * typically 12 for ipsec
 	 */
-	sg_link_tbl_len = cryptlen;
-
-	if (is_ipsec_esp) {
-		to_talitos_ptr_ext_set(&desc->ptr[4], authsize, is_sec1);
-
-		if (desc->hdr & DESC_HDR_MODE1_MDEU_CICV)
-			sg_link_tbl_len += authsize;
-	}
+	if (is_ipsec_esp && (desc->hdr & DESC_HDR_MODE1_MDEU_CICV))
+		elen = authsize;
 
-	ret = talitos_sg_map(dev, areq->src, sg_link_tbl_len, edesc,
-			     &desc->ptr[4], sg_count, areq->assoclen, tbl_off);
+	ret = talitos_sg_map_ext(dev, areq->src, cryptlen, edesc, &desc->ptr[4],
+				 sg_count, areq->assoclen, tbl_off, elen);
 
 	if (ret > 1) {
 		tbl_off += ret;

Patches currently in stable-queue which might be from [email protected] are

queue-4.15/crypto-talitos-fix-ipsec-cipher-in-length.patch queue-4.15/crypto-talitos-don-t-persistently-map-req_ctx-hw_context-and-req_ctx-buf.patch