Vendor-database parsing: ksscanf("%80[^\n]") writes up to 81 bytes into kmalloc(80); pci_load_vendor_data() writes one byte past the preloaded blob

Summary

Maximal 80-char line writes NUL at desc[80] (lands in slab slack - benign in practice); load_vendor_data deliberately writes vendordata[size]='\n' one byte past the loaded module. Boot-time, loader-supplied blob. Width-79 + in-blob-sentinel fix.