From ed488d772a73690dab2e3152d3a313ebef69be86 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Thu, 14 Nov 2013 11:21:10 +0300 Subject: 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 Signed-off-by: David S. Miller Signed-off-by: Willy Tarreau --- drivers/isdn/isdnloop/isdnloop.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/isdn/isdnloop/isdnloop.c b/drivers/isdn/isdnloop/isdnloop.c index 22446f777d67..92d895f282a7 100644 --- a/drivers/isdn/isdnloop/isdnloop.c +++ b/drivers/isdn/isdnloop/isdnloop.c @@ -1082,8 +1082,10 @@ 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", @@ -1096,7 +1098,7 @@ 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; -- cgit v1.2.3