CVE-2026-89776 vxlan: vnifilter: enforce exact length of GROUP/GROUP6 attributes

In the Linux kernel, the following vulnerability has been resolved: vxlan: vnifilter: enforce exact length of GROUP/GROUP6 attributes The VXLAN VNI filter entry policy declares the GROUP/GROUP6 address attributes as NLABINARY with only a maximum length, so validatenla accepts a payload shorter th...