CVE-2026-31405 media: dvb-net: fix OOB access in ULE extension header tables

In the Linux kernel, the following vulnerability has been resolved: media: dvb-net: fix OOB access in ULE extension header tables The ulemandatoryexthandlers and uleoptionalexthandlers tables in handleoneuleextension are declared with 255 elements valid indices 0-254, but the index htype is deriv...