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

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 <>
Signed-off-by: default avatarDavid S. Miller <>
parent 746ae30f
......@@ -2756,6 +2756,9 @@ isdn_net_setcfg(isdn_net_ioctl_cfg * cfg)
char *c,
if (strnlen(cfg->drvid, sizeof(cfg->drvid)) ==
return -EINVAL;
drvidx = -1;
chidx = -1;
strcpy(drvid, cfg->drvid);
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