From: Harsh Jain <harsh@chelsio.com>
Date: Tue, 29 Nov 2016 13:30:34 +0000 (+0530)
Subject: crypto: chcr - Fix memory corruption
X-Git-Tag: v4.9~2^2~7
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=66bf093772040ae8b864d2cf953f2c73005f7815;p=platform%2Fkernel%2Flinux-amlogic.git

crypto: chcr - Fix memory corruption

Fix memory corruption done by  *((u32 *)dec_key + k)
 operation.

Signed-off-by: Jitendra Lulla <JLULLA@chelsio.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---

diff --git a/drivers/crypto/chelsio/chcr_algo.h b/drivers/crypto/chelsio/chcr_algo.h
index ec64fbc..199b0bb 100644
--- a/drivers/crypto/chelsio/chcr_algo.h
+++ b/drivers/crypto/chelsio/chcr_algo.h
@@ -422,7 +422,7 @@ static inline void get_aes_decrypt_key(unsigned char *dec_key,
 {
 	u32 temp;
 	u32 w_ring[MAX_NK];
-	int i, j, k = 0;
+	int i, j, k;
 	u8  nr, nk;
 
 	switch (keylength) {
@@ -460,6 +460,7 @@ static inline void get_aes_decrypt_key(unsigned char *dec_key,
 		temp = w_ring[i % nk];
 		i++;
 	}
+	i--;
 	for (k = 0, j = i % nk; k < nk; k++) {
 		*((u32 *)dec_key + k) = htonl(w_ring[j]);
 		j--;