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| author | Dan Carpenter <dan.carpenter@oracle.com> | 2013-11-14 09:21:10 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-11-14 22:50:20 +0100 |
| commit | f9a23c84486ed350cce7bb1b2828abd1f6658796 (patch) | |
| tree | 3a116595363c0e0bf4b8fb12399255cc780ad4bc /drivers/isdn | |
| parent | sit: fix use after free of fb_tunnel_dev (diff) | |
| download | linux-f9a23c84486ed350cce7bb1b2828abd1f6658796.tar.xz linux-f9a23c84486ed350cce7bb1b2828abd1f6658796.zip | |
isdnloop: use strlcpy() instead of strcpy()
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>
Diffstat (limited to 'drivers/isdn')
| -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 baf2686aa8eb..02125e6a9109 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; |