I4L: fix isdn_ioctl memory issue

The isdnioctl function in isdncommon.c in Linux kernel 2.6.23 allows local users to cause a denial of service via a crafted ioctl struct in which iocts is not null terminated, which triggers a buffer overflow...

CVE-2007-6151

The isdnioctl function in isdncommon.c in Linux kernel 2.6.23 allows local users to cause a denial of service via a crafted ioctl struct in which iocts is not null terminated, which triggers a buffer overflow...