[PATCH net] ah: use crypto_memneq to check the ICV

[Sabrina Dubroca]

Signed-off-by: Sabrina Dubroca <s...@queasysnail.net>
---
 net/ipv4/ah4.c | 5 +++--
 net/ipv6/ah6.c | 5 +++--
 2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/net/ipv4/ah4.c b/net/ipv4/ah4.c
index 22377c8ff14b..207350b30f88 100644
--- a/net/ipv4/ah4.c
+++ b/net/ipv4/ah4.c
@@ -1,5 +1,6 @@
 #define pr_fmt(fmt) "IPsec: " fmt
 
+#include <crypto/algapi.h>
 #include <crypto/hash.h>
 #include <linux/err.h>
 #include <linux/module.h>
@@ -277,7 +278,7 @@ static void ah_input_done(struct crypto_async_request 
*base, int err)
        auth_data = ah_tmp_auth(work_iph, ihl);
        icv = ah_tmp_icv(ahp->ahash, auth_data, ahp->icv_trunc_len);
 
-       err = memcmp(icv, auth_data, ahp->icv_trunc_len) ? -EBADMSG: 0;
+       err = crypto_memneq(icv, auth_data, ahp->icv_trunc_len) ? -EBADMSG : 0;
        if (err)
                goto out;
 
@@ -413,7 +414,7 @@ static int ah_input(struct xfrm_state *x, struct sk_buff 
*skb)
                goto out_free;
        }
 
-       err = memcmp(icv, auth_data, ahp->icv_trunc_len) ? -EBADMSG: 0;
+       err = crypto_memneq(icv, auth_data, ahp->icv_trunc_len) ? -EBADMSG : 0;
        if (err)
                goto out_free;
 
diff --git a/net/ipv6/ah6.c b/net/ipv6/ah6.c
index dda6035e3b84..ac747b13a8dc 100644
--- a/net/ipv6/ah6.c
+++ b/net/ipv6/ah6.c
@@ -25,6 +25,7 @@
 
 #define pr_fmt(fmt) "IPv6: " fmt
 
+#include <crypto/algapi.h>
 #include <crypto/hash.h>
 #include <linux/module.h>
 #include <linux/slab.h>
@@ -481,7 +482,7 @@ static void ah6_input_done(struct crypto_async_request 
*base, int err)
        auth_data = ah_tmp_auth(work_iph, hdr_len);
        icv = ah_tmp_icv(ahp->ahash, auth_data, ahp->icv_trunc_len);
 
-       err = memcmp(icv, auth_data, ahp->icv_trunc_len) ? -EBADMSG : 0;
+       err = crypto_memneq(icv, auth_data, ahp->icv_trunc_len) ? -EBADMSG : 0;
        if (err)
                goto out;
 
@@ -627,7 +628,7 @@ static int ah6_input(struct xfrm_state *x, struct sk_buff 
*skb)
                goto out_free;
        }
 
-       err = memcmp(icv, auth_data, ahp->icv_trunc_len) ? -EBADMSG : 0;
+       err = crypto_memneq(icv, auth_data, ahp->icv_trunc_len) ? -EBADMSG : 0;
        if (err)
                goto out_free;
 
-- 
2.12.2