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Commit 5dc5503f authored by Dan Carpenter's avatar Dan Carpenter Committed by David S. Miller
Browse files

isdn: avoid copying too long drvid 



"cfg->drvid" comes from the user so there is a possibility they
didn't NUL terminate it properly.

Signed-off-by: default avatarDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 746ae30f

drivers/isdn/i4l/isdn_net.c

+3 −0
Original line number Diff line number Diff line
@@ -2756,6 +2756,9 @@ isdn_net_setcfg(isdn_net_ioctl_cfg * cfg) 
			char *c,

			*e;



			if (strnlen(cfg->drvid, sizeof(cfg->drvid)) ==

					sizeof(cfg->drvid))

				return -EINVAL;

			drvidx = -1;

			chidx = -1;

			strcpy(drvid, cfg->drvid);