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ah: use crypto_memneq to check the ICV

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Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
This commit is contained in:
Sabrina Dubroca
2017-05-03 16:57:57 +02:00
committed by Steffen Klassert
parent 24d472e4e4
commit 67df58a3e5
2 changed files with 6 additions and 4 deletions
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5
net/ipv4/ah4.c
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@@ -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;