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| author | Dan Carpenter <dan.carpenter@oracle.com> | 2013-11-14 12:21:10 +0400 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2014-01-03 08:33:32 +0400 |
| commit | 6cddf1b77783bc4606a5e963de416350b800f82a (patch) | |
| tree | d7597b2c72219d796f7bc4c5cbeda1f4fdc1886e | |
| parent | 3df3359dc058f0bfcfddd761caf849fe807122c5 (diff) | |
| download | linux-6cddf1b77783bc4606a5e963de416350b800f82a.tar.xz | |
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: Ben Hutchings <ben@decadent.org.uk>
| -rw-r--r-- | drivers/isdn/isdnloop/isdnloop.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/isdn/isdnloop/isdnloop.c b/drivers/isdn/isdnloop/isdnloop.c index 509135f225db..4df80fb7a314 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; |