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authorDan Carpenter <dan.carpenter@oracle.com>2013-11-14 11:21:10 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-12-08 07:29:24 -0800
commit0056eb8b08101a3f9c21d3069ebc300fe5008813 (patch)
tree8e6bbbd0d2bf65d429ed9ada2ba48ce5e35c5e51 /drivers
parent5e8c945dc7573ba2f28bddf51ca06b152b4bf749 (diff)
isdnloop: use strlcpy() instead of strcpy()
[ Upstream commit f9a23c84486ed350cce7bb1b2828abd1f6658796 ] These strings come from a copy_from_user() and there is no way to be sure they are NUL terminated. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/isdn/isdnloop/isdnloop.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/isdn/isdnloop/isdnloop.c b/drivers/isdn/isdnloop/isdnloop.c
index baf2686aa8e..02125e6a910 100644
--- a/drivers/isdn/isdnloop/isdnloop.c
+++ b/drivers/isdn/isdnloop/isdnloop.c
@@ -1083,8 +1083,10 @@ isdnloop_start(isdnloop_card *card, isdnloop_sdef *sdefp)
spin_unlock_irqrestore(&card->isdnloop_lock, flags);
return -ENOMEM;
}
- for (i = 0; i < 3; i++)
- strcpy(card->s0num[i], sdef.num[i]);
+ for (i = 0; i < 3; i++) {
+ strlcpy(card->s0num[i], sdef.num[i],
+ sizeof(card->s0num[0]));
+ }
break;
case ISDN_PTYPE_1TR6:
if (isdnloop_fake(card, "DRV1.04TC-1TR6-CAPI-CNS-BASIS-29.11.95",
@@ -1097,7 +1099,7 @@ isdnloop_start(isdnloop_card *card, isdnloop_sdef *sdefp)
spin_unlock_irqrestore(&card->isdnloop_lock, flags);
return -ENOMEM;
}
- strcpy(card->s0num[0], sdef.num[0]);
+ strlcpy(card->s0num[0], sdef.num[0], sizeof(card->s0num[0]));
card->s0num[1][0] = '\0';
card->s0num[2][0] = '\0';
break;